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Thread: Shockwiz

  1. #601
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    SW always wants u to make it softer from my experience. I had to increase pressure 10psi because i feel my bike rides better at 25-30% sag versus SW's 35%. SW is a good tool to get you in the ballpark butnl u need to fine tune it yourself. I had originally thought the SW was going to do that for me but ive learned that it cant. The lower pressure caused me to hang up too often on square edges and increasing the pressure helped with that and pedal strikes. In the end im back to what i had originally. Its still a good tool to get you really close.

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  2. #602
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    I guess it might be bike specific then as the Stats page shows my dynamic sag at 26% when pedaling. It pretty much shows the same thing on the home page if I just sit down on the bike.
    Here's the Stat page after the end of my ride that included a somewhat smooth fire road, uphill section with roots and rocks, back down that ugly rock infested section for high speed compression purposes, followed by our flow trail to catch some air or big jumps.Shockwiz-end-ride-home-stats.jpg
    2015 Santa Cruz Bronson
    Only major components that are still stock on my bike, the Reverb dropper and SLX brakes.

  3. #603
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    Quote Originally Posted by jacksonlui View Post
    SW always wants u to make it softer from my experience. I had to increase pressure 10psi because i feel my bike rides better at 25-30% sag versus SW's 35%. SW is a good tool to get you in the ballpark butnl u need to fine tune it yourself. I had originally thought the SW was going to do that for me but ive learned that it cant. The lower pressure caused me to hang up too often on square edges and increasing the pressure helped with that and pedal strikes. In the end im back to what i had originally. Its still a good tool to get you really close.

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    If we choose to ignore the Shockwiz's recommendation for air pressure, are the remaining suggestions still valid? I assume so but want to make sure.

  4. #604
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    I'd imagine everything will scale but im not exactly sure

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  5. #605
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    This may have been asked before but i dont feel like sorting through 600 or so posts.

    Im thinking of buying a shockwiz but dont have the time or patience to spend hours messing around with it trying to make sense of the data it records. How steep of a learning curve is there and how much time do you need to get it to work and make changes to your suspension?

    Is it something just for tech savy gearheads?

    Thanks in advance...

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  6. #606
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    Quote Originally Posted by dmo View Post
    This may have been asked before but i dont feel like sorting through 600 or so posts.

    Im thinking of buying a shockwiz but dont have the time or patience to spend hours messing around with it trying to make sense of the data it records. How steep of a learning curve is there and how much time do you need to get it to work and make changes to your suspension?

    Is it something just for tech savy gearheads?

    Thanks in advance...

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    It's dirt simple if you understand suspension setup in general. I just got one and in two rides already have my rear shock at a tune score of 96. But know I'm not new to suspension tuning exactly and had already made changes to my DVO Topaz that my feel for tuning said I needed. The Shockwiz just agreed after I finally got one and used it. 4.5 miles of varying terrain, fire road climb, rooted/rocky uphill and back down, then a flow trail with jumps. That's all it took to get my tune at 100% confidence and there's a chance I could have ridden even less and still got suggestions at 100% confidence. So, it boils down to, if it says adjust your suspension's ramp or high speed compression, would you know what they're suggesting? If so, it's pretty darn simple to follow.
    2015 Santa Cruz Bronson
    Only major components that are still stock on my bike, the Reverb dropper and SLX brakes.

  7. #607
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    Quote Originally Posted by IRBent View Post
    It's dirt simple if you understand suspension setup in general. I just got one and in two rides already have my rear shock at a tune score of 96. But know I'm not new to suspension tuning exactly and had already made changes to my DVO Topaz that my feel for tuning said I needed. The Shockwiz just agreed after I finally got one and used it. 4.5 miles of varying terrain, fire road climb, rooted/rocky uphill and back down, then a flow trail with jumps. That's all it took to get my tune at 100% confidence and there's a chance I could have ridden even less and still got suggestions at 100% confidence. So, it boils down to, if it says adjust your suspension's ramp or high speed compression, would you know what they're suggesting? If so, it's pretty darn simple to follow.
    Ok. I can deal with that.

    How reliable is it, does it break?
    Do you need to spend alot of time setting it up or calibrating it?

    Thanks again

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  8. #608
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    Quote Originally Posted by dmo View Post
    Ok. I can deal with that.

    How reliable is it, does it break?
    Do you need to spend alot of time setting it up or calibrating it?

    Thanks again

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    I think it's very sturdy so long as you strap it to your bike with decent zip ties. As for calibration, it does take a bit of patience until you understand the process. You let all the air out of your fork/shock then follow the instructions where you cycle the suspension through it's full travel a few times. You also have to hold it at full extension so it can detect zero travel. Then do the same for completely compressed which isn't too bad since there's no pressure in your fork/shock. The one thing it doesn't explain that's crucial. The cal wizard will tell you to pump you fork/shock up to recommended pressure. If you do that on a fork or shock that has a negative chamber and don't go through the small incremental adds of air and cycle the fork or shock to equalize the positive and negative chambers, the calibration will be all jacked up. I tried to make certain my fully extended my pressure read as close to 0psi as possible. Otherwize any positive or negative pressure in the suspension system when setting the zero travel mark would cause minor error in the calibration. By doing so I can sit on my bike and the Shockwiz read 25-26% sag and my o-ring will measure exactly that. You should find some pressure changes to take place though during your ride. Say you start out with 200psi in your shock. As it heats up due to heavy use the pressure could climb a few psi. Or set it up outside where you plan to ride and then bring it indoors and the pressure could drop a few psi as the air cools inside. If you take the leap I'm sure folks here will be glad to help you out if you run into something you don't understand. Quarq/Shockwiz have videos on YouTube that show you how to calibrate it.

    https://www.youtube.com/user/QuarqTechnology
    2015 Santa Cruz Bronson
    Only major components that are still stock on my bike, the Reverb dropper and SLX brakes.

  9. #609
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    Quote Originally Posted by IRBent View Post
    ...I tried to make certain my fully extended my pressure read as close to 0psi as possible. Otherwize any positive or negative pressure in the suspension system when setting the zero travel mark would cause minor error in the calibration...
    I don't understand that. I would think you could have any pressure in the fork so long as you could reach both extremes of travel.
    Do the math.

  10. #610
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    Where is the best place to rent a Shockwiz?
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  11. #611
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    Quote Originally Posted by Lone Rager View Post
    I don't understand that. I would think you could have any pressure in the fork so long as you could reach both extremes of travel.
    You may be dead right. Fully extended to fully compressed lets the Shockwiz calculate your compression ratio. But I couldn't help but wonder if when you press the okay button while fully extended if it didn't also tell the Shockwiz that the pressure inside equals zero travel and zero psi. I've read numerous complaints that the pressure shown on the Shockwiz doesn't match that of the user's shock pump. Mine on the other hand is within 1psi most of the time. So either my Lezyne Digital gauge is on the same plane as the pressure transducer used in the Shockwiz, or my zero setting may have made the difference. I was just thinking, no air inside and fully extended means zero, not +/-1psi.
    2015 Santa Cruz Bronson
    Only major components that are still stock on my bike, the Reverb dropper and SLX brakes.

  12. #612
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    Quote Originally Posted by Lone Rager View Post
    I don't understand that. I would think you could have any pressure in the fork so long as you could reach both extremes of travel.
    you can. I fact if you have a fork with a coil negative spring you have to leave 30psi in it our it's impossible to top it out.

  13. #613
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    Quote Originally Posted by alexbn921 View Post
    you can. I fact if you have a fork with a coil negative spring you have to leave 30psi in it our it's impossible to top it out.
    Ingenious. I bet Quarq states if you have a coil spring the Shockwiz won't work. But I'd imagine if you knew the coil on the negative side pushed upwards at 30psi, balancing that out with positive pressure could trick the Shockwiz.
    2015 Santa Cruz Bronson
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  14. #614
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    If the oring says 30%, it doesn't necessarily mean the SW will report 30% depending on the leverage curve of the bike right?

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  15. #615
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    Anyone bought Shockwiz from bikeinn.com? Price damn good, legit?


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  16. #616
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    Quote Originally Posted by IRBent View Post
    Ingenious. I bet Quarq states if you have a coil spring the Shockwiz won't work. But I'd imagine if you knew the coil on the negative side pushed upwards at 30psi, balancing that out with positive pressure could trick the Shockwiz.
    I don't think that's true. The shockwiz only uses pressure to determine where the shock/fork is in its travel. You could do the same with a linear transducer, which is what most data acquisition systems use. As long as there's nothing that messes with the pressure as a function of travel or speed (e.g. MRP ramp control) then it should be fine. A negative spring doesn't.
    Do the math.

  17. #617
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    Anyone know if they ever go on sale? I tried a jenson coupon but it wouldn't apply

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  18. #618
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    Quote Originally Posted by dmo View Post
    Anyone know if they ever go on sale? I tried a jenson coupon but it wouldn't apply

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    Sometimes you can get them from a site wide sale. I got one like that for 10% off over the fourth from worldwide.

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  19. #619
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    Quote Originally Posted by jacksonlui View Post
    If the oring says 30%, it doesn't necessarily mean the SW will report 30% depending on the leverage curve of the bike right?

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    Nope, the pressure at a given travel% is independent of the leverage curve of the bike. If the air chamber has a volume of 500 at full extension, it will have a volume of 250 at 50% travel, with a resultant doubling of the pressure compared to the pressure at full extension (this is oversimplified since the air chamber doesn't go to zero at bottom out, but you get the idea). The leverage curve of the bike will affect how much force it takes to get to 30% travel, but it won't change the pressure in the air chamber at 30% travel.

    To answer your question, yes, if the O-ring says 30%, the shockwiz should be reading 30%. If not, the compression ratio calibration is off.

  20. #620
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    Quote Originally Posted by IRBent View Post
    Ingenious. I bet Quarq states if you have a coil spring the Shockwiz won't work. But I'd imagine if you knew the coil on the negative side pushed upwards at 30psi, balancing that out with positive pressure could trick the Shockwiz.
    The negative spring doesn't factor into the compression ratio, but is impossible to compress without some help. 30 psi on an older fox 34 seem perfect. Since it only cares about how much you compressed the air, the starting psi doesn't matter.

    Quote Originally Posted by Lone Rager View Post
    I don't think that's true. The shockwiz only uses pressure to determine where the shock/fork is in its travel. You could do the same with a linear transducer, which is what most data acquisition systems use. As long as there's nothing that messes with the pressure as a function of travel or speed (e.g. MRP ramp control) then it should be fine. A negative spring doesn't.
    This. It's only concerned with the starting and ending volume of the fork or shock.
    On forks with an air negative you need to have them balanced with the air in the main chamber. I find that close to zero works pretty good. Anything under 30 should work too, as long as you can full compress and extend the fork.

  21. #621
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    Quote Originally Posted by jacksonlui View Post
    If the oring says 30%, it doesn't necessarily mean the SW will report 30% depending on the leverage curve of the bike right?

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    Yes and no.
    Forks always or something is wrong.
    Shocks can have different leverage ratios depending on travel. For example if you have a 2-2.5 then in the beginning the shock will move 1 for every 2 of wheel travel. The end will be 1 to 2.5.
    Some like a DW link bike will move the shock more then settle down in the sag zone.
    So rear shock sag does not equal rear wheel sag, but it is close. Unless it's off by a large amount (5-10%) I wouldn't worry about it.

  22. #622
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    Quote Originally Posted by alexbn921 View Post
    Yes and no.
    Forks always or something is wrong.
    Shocks can have different leverage ratios depending on travel. For example if you have a 2-2.5 then in the beginning the shock will move 1 for every 2 of wheel travel. The end will be 1 to 2.5.
    Some like a DW link bike will move the shock more then settle down in the sag zone.
    So rear shock sag does not equal rear wheel sag, but it is close. Unless it's off by a large amount (5-10%) I wouldn't worry about it.
    But the %sag as measured on the shock O-ring should still match the number on the Shockwiz, even if it's not an exact linear relationship with the distance the wheel has actually traveled, correct?

  23. #623
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    Quote Originally Posted by Sid Duffman View Post
    But the %sag as measured on the shock O-ring should still match the number on the Shockwiz, even if it's not an exact linear relationship with the distance the wheel has actually traveled, correct?
    In my opinion, yes. The Shockwiz has no input for suspension linkage design and don't distinguish between shocks with linkage vs forks with linear travel. All it knows it fully extended pressures vs fully compressed. It then calculates your sag based on those two points alone. At 50% travel, per the O-ring on the shock or fork, the pressure should double. Then at 75% it should double pressure again. Nothing more than Boyle's gas law reversed engineered to give you travel/sag.
    2015 Santa Cruz Bronson
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  24. #624
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    Quote Originally Posted by Sid Duffman View Post
    But the %sag as measured on the shock O-ring should still match the number on the Shockwiz, even if it's not an exact linear relationship with the distance the wheel has actually traveled, correct?
    Yes your right.

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    Here is my conundrum. in playful and balanced I get green on air pressure air spring and rebound but consistently get a big fat red on HS compression on the left side of the slider(make softer) even though it is in the fully open position. Low speed compression green and bottom out is yellow(remove resistance)
    Shock is a fox X2. Any suggestions as to what I should try
    thanks

  26. #626
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    Quote Originally Posted by mtb4190 View Post
    Here is my conundrum. in playful and balanced I get green on air pressure air spring and rebound but consistently get a big fat red on HS compression on the left side of the slider(make softer) even though it is in the fully open position. Low speed compression green and bottom out is yellow(remove resistance)
    Shock is a fox X2. Any suggestions as to what I should try
    thanks
    Sounds like you're probably a bit lighter than the shock tune was designed for. Before I got a Shockwiz my gut said I was in the same boat based on feel. I went with a lighter weight oil, or a lower viscosity oil. I rode with the Shockwiz and it agreed with me, giving me all green on the top 3 items and all yellows on the bottom 3, high/low speed compression and bottom out resistance. Unlike the Fox X2, my DVO Topaz allows me to adjust the pressure on the oil bladder system. I dropped 5psi out of it and everything moved into the green BUT low speed compression. It's still in the yellow for now. Bottom line, I'm not real familiar with the X2 but it sounds like you may need to adjust your compression shim stack to get a lower amount of resistance on the oil flow.
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  27. #627
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    Quote Originally Posted by mtb4190 View Post
    Here is my conundrum. in playful and balanced I get green on air pressure air spring and rebound but consistently get a big fat red on HS compression on the left side of the slider(make softer) even though it is in the fully open position. Low speed compression green and bottom out is yellow(remove resistance)
    Shock is a fox X2. Any suggestions as to what I should try
    thanks
    Could try with one less spacer. That's just a crap shoot though. It won't directly affect it but might soften it up enough to get it where it wants it.

    If the bike feels good to you though I don't know if I would stress about it.

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  28. #628
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    Quote Originally Posted by tuckerjt07 View Post
    Could try with one less spacer. That's just a crap shoot though. It won't directly affect it but might soften it up enough to get it where it wants it.

    If the bike feels good to you though I don't know if I would stress about it.

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    I agree with the idea, if it feels good to you. Yeah, I'd love to have a test score of 100 with 100% confidence, but I'm smart enough to know that those numbers would only be good for that very same trail I tested on with outside temps pretty much the same. Conditions don't stay the same and I'm not going to test tune my suspension before every ride. I'm really happy with my score of 96 at 100% confidence right now and if taking a few psi out of my air can doesn't do, I'll settle on close enough.
    2015 Santa Cruz Bronson
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  29. #629
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    Quote Originally Posted by tuckerjt07 View Post
    Could try with one less spacer. That's just a crap shoot though. It won't directly affect it but might soften it up enough to get it where it wants it.

    If the bike feels good to you though I don't know if I would stress about it.

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    Na not stressing at all I just dont understand why it would be in the red. In theory the X2 should have ample adjustment and if anything the shock feels like it could do with a little more support. I might try adding a little more LS compression damping
    Thanks for the reply

  30. #630
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    Quote Originally Posted by mtb4190 View Post
    Na not stressing at all I just dont understand why it would be in the red. In theory the X2 should have ample adjustment and if anything the shock feels like it could do with a little more support. I might try adding a little more LS compression damping
    Thanks for the reply
    High speed in the red to me screams the shock is not active enough. A softer shock moves faster. How's your sag? Do you use all of your travel now? If sag and overall travel is decent, I'd might be more inclined to add a tuning band on the positive then lower the air pressure. High speed compression has to be affected by air pressure to some extent. Lowering the pressure should allow things to move faster which could improve high speed compression results. Adding another spacer would help make up the pressure loss and prevent bottoming out. You could try both scenarios, adding air and removing a spacer as previously suggested, then right the opposite and see which works out best. I'm in the same boat but with low speed compression in the yellow and my adjustment wide open. I plan on dropping a few psi and seeing how the Shockwiz reacts on low speed compression and hope that it doesn't kill any of the other settings that are all in the green.
    Quote Originally Posted by mtb4190 View Post
    Na not stressing at all I just dont understand why it would be in the red. In theory the X2 should have ample adjustment and if anything the shock feels like it could do with a little more support. I might try adding a little more LS compression damping
    Thanks for the reply
    2015 Santa Cruz Bronson
    Only major components that are still stock on my bike, the Reverb dropper and SLX brakes.

  31. #631
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    Quote Originally Posted by IRBent View Post
    High speed in the red to me screams the shock is not active enough. A softer shock moves faster. How's your sag? Do you use all of your travel now? If sag and overall travel is decent, I'd might be more inclined to add a tuning band on the positive then lower the air pressure. High speed compression has to be affected by air pressure to some extent. Lowering the pressure should allow things to move faster which could improve high speed compression results. Adding another spacer would help make up the pressure loss and prevent bottoming out. You could try both scenarios, adding air and removing a spacer as previously suggested, then right the opposite and see which works out best. I'm in the same boat but with low speed compression in the yellow and my adjustment wide open. I plan on dropping a few psi and seeing how the Shockwiz reacts on low speed compression and hope that it doesn't kill any of the other settings that are all in the green.
    That could work as well. X2 is tricky without knowing the details. Some configurations allow for quite a few spacers, while others, 200x57, only allow two.

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    Thanks guys that gives some direction. I will start playing around with bands. Sag is currently at 33%. dynanamic sag generally around 35-36%. seems to be using all the travel going by the O ring on the shaft but big hit or whatever it is called is on zero

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    This last stretch of posts hones in on a great topic: High Speed Compression Suggestions, and how compression interacts with air spring rate.

    I'll offer this up: if everything is looking good and the Tuning Scores are in the 90's I tend to disregard High Speed Compression Suggestions that are only 5% deviation from 'OK'. (Just to note - I don't typically strive for a Score of 100). When the Shockwiz suggests making HSC softer - typically the rider isn't using full travel. These seem to go hand-in-hand. But why didn't the rider use full travel?

    Shockwiz is only part of the overall information the tuner should consider. Imagine the complexity in the program related to distinguishing between a HSC issue and an Air Spring Ramp issue. That could be very nuanced. Then realize the Shockwiz doesn't know if the trail conditions for that Tuning Session actually demanded full travel.

    In concept a tuner can use a combination of baseline air pressure, ramp, and compression damping to help control compression scenarios. I'm not an Engineer, nor do I want to quibble with one, but the big difference is that a spring stores energy (and returns it), while the damper absorbs the energy. Pulling all information from the rider, tire pressure, Shockwiz, and understanding the demands of the trail should factor in to how you approach minor deviations from 'OK' in the HSC settings.

  34. #634
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    Quote Originally Posted by oldranger View Post
    This last stretch of posts hones in on a great topic: High Speed Compression Suggestions, and how compression interacts with air spring rate.

    I'll offer this up: if everything is looking good and the Tuning Scores are in the 90's I tend to disregard High Speed Compression Suggestions that are only 5% deviation from 'OK'. (Just to note - I don't typically strive for a Score of 100). When the Shockwiz suggests making HSC softer - typically the rider isn't using full travel. These seem to go hand-in-hand. But why didn't the rider use full travel?

    Shockwiz is only part of the overall information the tuner should consider. Imagine the complexity in the program related to distinguishing between a HSC issue and an Air Spring Ramp issue. That could be very nuanced. Then realize the Shockwiz doesn't know if the trail conditions for that Tuning Session actually demanded full travel.

    In concept a tuner can use a combination of baseline air pressure, ramp, and compression damping to help control compression scenarios. I'm not an Engineer, nor do I want to quibble with one, but the big difference is that a spring stores energy (and returns it), while the damper absorbs the energy. Pulling all information from the rider, tire pressure, Shockwiz, and understanding the demands of the trail should factor in to how you approach minor deviations from 'OK' in the HSC settings.
    Very well put and I whole heatedly agree.
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  35. #635
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    Quote Originally Posted by oldranger View Post
    This last stretch of posts hones in on a great topic: High Speed Compression Suggestions, and how compression interacts with air spring rate.

    I'll offer this up: if everything is looking good and the Tuning Scores are in the 90's I tend to disregard High Speed Compression Suggestions that are only 5% deviation from 'OK'. (Just to note - I don't typically strive for a Score of 100). When the Shockwiz suggests making HSC softer - typically the rider isn't using full travel. These seem to go hand-in-hand. But why didn't the rider use full travel?

    Shockwiz is only part of the overall information the tuner should consider. Imagine the complexity in the program related to distinguishing between a HSC issue and an Air Spring Ramp issue. That could be very nuanced. Then realize the Shockwiz doesn't know if the trail conditions for that Tuning Session actually demanded full travel.

    In concept a tuner can use a combination of baseline air pressure, ramp, and compression damping to help control compression scenarios. I'm not an Engineer, nor do I want to quibble with one, but the big difference is that a spring stores energy (and returns it), while the damper absorbs the energy. Pulling all information from the rider, tire pressure, Shockwiz, and understanding the demands of the trail should factor in to how you approach minor deviations from 'OK' in the HSC settings.
    I'm glad to hear that others are having the same issues with HSC.

    I have Avalanche suspension and Shockwiz really doesn't like Craig's HSC choices, front and rear. Shockwiz will be in the red for HSC telling me to soften it, then I will hit a great 5' drop, and it puts me right back in to the green. The thing is that I only do 1-2 drops maybe every other ride.

  36. #636
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    My issue isn't with HSC as it's in the green with everything else. My LSC is saying to make it softer. Heck, the shock already feels great so if I can't get everything into the green, I'll happily settle for a tune score of 96 with the LSC in the yellow.
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  37. #637
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    It does that to me as well. Like you I don't worry about it. Once I know the shock is performing correctly. It's all about feel and personal preference. The shockwiz was never meant to remove the human element only the mechanical.
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  38. #638
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    You see my issue is that if I didn't have the shock whiz I would be adding more compression. probably 2 clicks of LSC and at least one of HSC but with HSC already in the red and LSC in yellow it makes me think I am on the wrong path to getting the feel I am looking for. You know super plush but with good support and able to take the big drops

  39. #639
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    Quote Originally Posted by IRBent View Post
    My issue isn't with HSC as it's in the green with everything else. My LSC is saying to make it softer. Heck, the shock already feels great so if I can't get everything into the green, I'll happily settle for a tune score of 96 with the LSC in the yellow.
    Quote Originally Posted by mtb4190 View Post
    You see my issue is that if I didn't have the shock whiz I would be adding more compression. probably 2 clicks of LSC and at least one of HSC but with HSC already in the red and LSC in yellow it makes me think I am on the wrong path to getting the feel I am looking for. You know super plush but with good support and able to take the big drops
    If those affe the type rides you are doing when you tune your shock. SW should definitely get you in the ball park. The rest is going to be personal preference.
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  40. #640
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    ^^^^

    Not sure why it double quoted but my reply was @ mtb1940.
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    This weekends riding will be totally different terrain ie lots of roots but not so many large hits so I probably wont change too much for that but I will get back to this forum after further experimentation.cheers

  42. #642
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    Hi guys, I've been trying to tune my fox float 36 rc2 180mm fork but have experience quite a bit of issues. First of is the calibration wizard which fails but suggests that the compression ratio is between 5.6-5.9. I emailed SRAM and they said that this seems wrong and that I should measure the actual travel on the fork. I did and it actually seemed correct so I ran with that.

    On the trail shockwiz keeps telling me to remove air and make HSC softer, after reading this thread I guess that's due to me not using the full travel. Alas on the flow trail I'm riding this isn't possible. Is there a way to get around this setting? Maybe by decreasing the CR so that it thinks I'm using the full travel when I'm not?

    Last question concerns setting the baseline air pressure. The calibration wizard suggests to fully extend the fork but since it has a negative air pressure chamber the fork sits a bit in the travel. If I use the calibration wizard to set the baseline air I get something like 8% sag which from the manual is wrong. Kind of confusing why the calibration wizard tells you to fully extend the fork when measuring the baseline air pressure.

  43. #643
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    Quote Originally Posted by tkaszuba View Post
    Hi guys, I've been trying to tune my fox float 36 rc2 180mm fork but have experience quite a bit of issues. First of is the calibration wizard which fails but suggests that the compression ratio is between 5.6-5.9. I emailed SRAM and they said that this seems wrong and that I should measure the actual travel on the fork. I did and it actually seemed correct so I ran with that.

    On the trail shockwiz keeps telling me to remove air and make HSC softer, after reading this thread I guess that's due to me not using the full travel. Alas on the flow trail I'm riding this isn't possible. Is there a way to get around this setting? Maybe by decreasing the CR so that it thinks I'm using the full travel when I'm not?

    Last question concerns setting the baseline air pressure. The calibration wizard suggests to fully extend the fork but since it has a negative air pressure chamber the fork sits a bit in the travel. If I use the calibration wizard to set the baseline air I get something like 8% sag which from the manual is wrong. Kind of confusing why the calibration wizard tells you to fully extend the fork when measuring the baseline air pressure.
    Based on your negative air chamber comment, try this. When you first start calibration, let the air out then cycle the fork nice and slow several times to let the negative air pressure bleed into the positive chamber, then let it out through the Shockwiz. This might help with the negative chamber causing the suck down sag. Also when it asks you to pump it up to manufacturer's recommended pressure, go at it maybe 10-20psi at a time then cycle the fork the let the negative and positive chambers equalize.
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  44. #644
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    If your compression ratio is off, Nothing will work! If you have a coil negative spring you need to leave 30 psi in the main chamber to help you compress the coil. And friend to help hold the fork at full top/bottom.

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    Ok, I tried as suggested but that didn't change anything. Maybe I rephrase the question. Can the shock travel show more than 0% when the fork is at rest (because of the negative air chamber) or should I reset it to zero?

    I couldn't find this information in the manual.

    Shockwiz-img_5502.jpg

  46. #646
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    Quote Originally Posted by tkaszuba View Post
    Ok, I tried as suggested but that didn't change anything. Maybe I rephrase the question. Can the shock travel show more than 0% when the fork is at rest (because of the negative air chamber) or should I reset it to zero?

    I couldn't find this information in the manual.

    Click image for larger version. 

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    The manual plainly states that any shock travel greater than +/- 3% means something went wrong in the calibration process.

    Shockwiz-travel-error.jpg
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  47. #647
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    Yes, I saw that and in the calibration step it shows 0% with a base pressure of 70 psi (since it's fully extended manually by me when taking this measurement) but when I get back to the home screen it shows 6-7% with the correct pressure of 74 psi.

  48. #648
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    Quote Originally Posted by tkaszuba View Post
    Yes, I saw that and in the calibration step it shows 0% with a base pressure of 70 psi (since it's fully extended manually by me when taking this measurement) but when I get back to the home screen it shows 6-7% with the correct pressure of 74 psi.
    And thats correct. 74psi divided by that the 6% factor brings it back to 70psi. I.e. 74/1.06

  49. #649
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    Quote Originally Posted by lucifuge View Post
    And thats correct. 74psi divided by that the 6% factor brings it back to 70psi. I.e. 74/1.06
    Where's this 1.06 factor coming from?
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  50. #650
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    Quote Originally Posted by IRBent View Post
    Where's this 1.06 factor coming from?
    70psi = 100%
    74psi = 106% (we were provided with 6%)

    106% corresponds to a factor of 1.06

  51. #651
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    Quote Originally Posted by lucifuge View Post
    70psi = 100%
    74psi = 106% (we were provided with 6%)

    106% corresponds to a factor of 1.06
    I understand the math. But where does the Shockwiz say you get a 6% variation?
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  52. #652
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    It's like I get 72psi on my Lyrik and that' s at 12% natural sag.
    So 72psi/1.12 = 64 psi which is correct at the shock pump with 0 sag

  53. #653
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    Quote Originally Posted by IRBent View Post
    I understand the math. But where does the Shockwiz say you get a 6% variation?
    No, re-read that guys response. He provided the 6%

  54. #654
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    Awesome, thanks for this info. Not sure why SRAM doesn't include this in the manual.

    Now getting back to measuring the compression ratio, I guess when you measure the travel used you need to take this initial sag into consideration as well? The thing is when you do it the old fashioned way you don't. I'm guessing that shockwiz uses that 1.06 factor to adjust the travel used so that it's inline with manual measurements?


    Quote Originally Posted by lucifuge View Post
    And thats correct. 74psi divided by that the 6% factor brings it back to 70psi. I.e. 74/1.06

  55. #655
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    I've used my shockwiz to tune my first bike over the course of a month or so. I'm happy with the unit. I'm now on to my second bike. I wanted to share some of my experience with this unit. First off, the default fox suggested settings for my fork and shock on the first bike were pretty much spot on for the "balanced" tune. I did maybe 1-2 clicks here and there to get as close to perfect as it would tell me over the course of many runs. However, in case people want to try and get crazy and try to get 100% on your tune, just forget about that. I'm a bit of a perfectionist so I rode a dozen or two times on each, fork/shock, to measure and tune. What I found is that even without changing a single thing (except start new session on shockwiz) and riding the same trail, it would suggest slightly different things each time. If you get just a yellow, what I would call a "suggestion", in the tuning, take it with a grain of salt. It's very likely to be different if you rode the trail again. I found eventually, if I just kept resetting the shockwiz and riding the same trail I eventually would hit 100% tune by chance! I don't think this is any kind of downside to the unit at all. It makes perfect sense that no two runs are going to be exactly the same. What it does seem to mean though, is that when you get into the yellow zone with the suggestions you're really getting into a very subjective and unrepeatable area. There is not much need to try and get 100%, don't waste your time... or just keep riding until you get it if it makes you feel better

  56. #656
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    Quote Originally Posted by SonomaBiker View Post
    I've used my shockwiz to tune my first bike over the course of a month or so. I'm happy with the unit. I'm now on to my second bike. I wanted to share some of my experience with this unit. First off, the default fox suggested settings for my fork and shock on the first bike were pretty much spot on for the "balanced" tune. I did maybe 1-2 clicks here and there to get as close to perfect as it would tell me over the course of many runs. However, in case people want to try and get crazy and try to get 100% on your tune, just forget about that. I'm a bit of a perfectionist so I rode a dozen or two times on each, fork/shock, to measure and tune. What I found is that even without changing a single thing (except start new session on shockwiz) and riding the same trail, it would suggest slightly different things each time. If you get just a yellow, what I would call a "suggestion", in the tuning, take it with a grain of salt. It's very likely to be different if you rode the trail again. I found eventually, if I just kept resetting the shockwiz and riding the same trail I eventually would hit 100% tune by chance! I don't think this is any kind of downside to the unit at all. It makes perfect sense that no two runs are going to be exactly the same. What it does seem to mean though, is that when you get into the yellow zone with the suggestions you're really getting into a very subjective and unrepeatable area. There is not much need to try and get 100%, don't waste your time... or just keep riding until you get it if it makes you feel better
    Perfect summation. So, were you seeing a tune score of 96 often and without any changes it finally blipped up to 100% on that one perfect ride? I had 2 out of 4 rides clock in at 96 and was very happy with the feel. One more tweak and bam, 80. But that 80 didn't feel any worse than the two 96 scores. I'm just about ready to move to the fork but I want to test the settings that gave me the higher score another time or two first.
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  57. #657
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    Quote Originally Posted by IRBent View Post
    Perfect summation. So, were you seeing a tune score of 96 often and without any changes it finally blipped up to 100% on that one perfect ride? I had 2 out of 4 rides clock in at 96 and was very happy with the feel. One more tweak and bam, 80. But that 80 didn't feel any worse than the two 96 scores. I'm just about ready to move to the fork but I want to test the settings that gave me the higher score another time or two first.
    Yes, exactly, the scores were always very close to perfect, but not quite. I kept having a couple of things come up yellow and kept adjusting. After a while I realized I kept adjusting things one way and then back again based on what it was saying.... so I then just kept everything the same to see if it would repeat the same, and it didn't. However, it did always come back very close to perfect, except for one or two rides, which in all fairness I did ride slightly differently on.

  58. #658
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    Quote Originally Posted by SonomaBiker View Post
    Yes, exactly, the scores were always very close to perfect, but not quite. I kept having a couple of things come up yellow and kept adjusting. After a while I realized I kept adjusting things one way and then back again based on what it was saying.... so I then just kept everything the same to see if it would repeat the same, and it didn't. However, it did always come back very close to perfect, except for one or two rides, which in all fairness I did ride slightly differently on.
    I had two rides clock in at 96 with 100% confidence. It was only after I tried to eek out that last 4 points that all hell broke loose. I'm well satisfied with the feel at 96. For that matter I was pretty darn happy with the 92 I got based in gut instinct and feel obtained on my first Shockwiz run. I'm a tweaker so I just couldn't let it lie. Between my personal experience and what you've shared, I'll be happy if I can repeat those 96 scores.
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  59. #659
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    On my formula thirtyfive fork I got 96 with 100% confidence but then went further down the trail that had loose rocks and it went down to 82. From there I realised that it's impossible to have the fork tuned for everything and it's better to pick the section of trail that matters the most to your riding.

  60. #660
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    Is it possible to pause a session so you can just analyse the sections of trail that matter to you?

  61. #661
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    I do this by taking a screenshot of my phone of the different shockwiz pages and review them later.

  62. #662
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    Yes, you can turn off bluetooth.

    Quote Originally Posted by onzadog View Post
    Is it possible to pause a session so you can just analyse the sections of trail that matter to you?

  63. #663
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    Won't it just upload all the data once it comes on again?

  64. #664
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    Since it's streaming data as it comes I doubt that the device stores the data if it can't connect to the phone but maybe somebody can correct this.

    Quote Originally Posted by onzadog View Post
    Won't it just upload all the data once it comes on again?

  65. #665
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    Not got mine yet so I'm just going off what I've heard from others, but I thought you didn't need to take the phone riding with you. You could download the data at the end of the day and run the analysis.

  66. #666
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    Quote Originally Posted by onzadog View Post
    Not got mine yet so I'm just going off what I've heard from others, but I thought you didn't need to take the phone riding with you. You could download the data at the end of the day and run the analysis.
    That's absolutely correct.
    The device works independently without a phone.
    The phone is only necessary to display the results.
    Pausing therefore is not possible.

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  67. #667
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    Quote Originally Posted by tkaszuba View Post
    On my formula thirtyfive fork I got 96 with 100% confidence but then went further down the trail that had loose rocks and it went down to 82. From there I realised that it's impossible to have the fork tuned for everything and it's better to pick the section of trail that matters the most to your riding.
    I'm sure that's the case too. The section of trail I picked starts out with a long and pretty smooth fire road climb where the data is useless. I break off the road for a slow more technical rocky uphill section and eventually turn around to bomb back down that same section. By then the Shockwiz is pretty happy but asking for jumps. Once back down to the fire road another flow trail is ahead with the jumps it's asking for. I've done screenshots throughout the ride and watched the score and confidence levels both climb and the detections and suggestions go from bad to all green. I'd imagine if I kept on riding smooth trails thereafter my score would slide since my suspension wouldn't be working the full gamut.
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  68. #668
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    Shockwiz-screensh-fox-x2.jpg
    Had a bit of stiction in one of the pivots. Got that sorted and HSC went to green.Felt a lot better

  69. #669
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    Just updated Shockwiz to firmware 4.0.0.

    Does anyone know what is changed in this (presumably major) firmware release?

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    As did I and wondering the same.

  71. #671
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    And there is nothing to be found on their website that discusses firmware history and changes. Looking through the software after updating yesterday, I saw nothing different. Although I'm not sure that it had anything to do with the update but I was able to find and connect to my Shockwiz much easier and quicker. Usually it's an ordeal that requires me to kill the app a time or two and wait minutes while watching the red LED blink before my software finds my unit.
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  72. #672
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    Anyone have trouble with droid phones? sees the shockwiz but won't stay connected.

  73. #673
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    Is the Shockwiz worth it if I dont have the top of the line suspension with high/low speed adjustments? I'm trying to get the most out of what I have but am wondering if it wouldn't be money well spent towards upgrading the suspension itself first?

    I'm referring to 2016 Stumpjumper 29 with FOX FLOAT Performance DPS rear and FOX 34 Plus Performance front.

  74. #674
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    Does a compression ratio of 2.0 sound low for a 150mm Pike with a Luftkappe and no tokens? It measured dynamic sag at 26% which is maybe slightly low but I don't think to far off.

    Unfortunately I only have the unit until tomorrow and that's for sorting the shock but I'd like to know!

  75. #675
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    I'm not 100% sure on how the ratio is figured but I do know that as I increased tokens in my fork the compression ratio increased as well. I'd venture to guess that since you have no tokens in there then 2.0 probably isn't low. When I make adjustments to mine, I typically will go through the calibration process twice to confirm the compression ratio is the same both times and it always seems to be.

  76. #676
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    Quote Originally Posted by fathomer View Post
    Does a compression ratio of 2.0 sound low for a 150mm Pike with a Luftkappe and no tokens? It measured dynamic sag at 26% which is maybe slightly low but I don't think to far off.

    Unfortunately I only have the unit until tomorrow and that's for sorting the shock but I'd like to know!
    2.0 seems low but not unreasonable. I would redo your calibration with a friend to help full extend and compress the fork. Also you need to make sure your negative camber is empty along with your main camber.
    Stock 150mm 27.5 pike was 2.6.

  77. #677
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    Quote Originally Posted by IRBent View Post
    And there is nothing to be found on their website that discusses firmware history and changes. Looking through the software after updating yesterday, I saw nothing different. Although I'm not sure that it had anything to do with the update but I was able to find and connect to my Shockwiz much easier and quicker. Usually it's an ordeal that requires me to kill the app a time or two and wait minutes while watching the red LED blink before my software finds my unit.
    It completely changed the Playful setup on mine. Was at a score of 88 and dropped it to 76. Also went from OK on packing to Poor.

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  78. #678
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    Quote Originally Posted by tuckerjt07 View Post
    It completely changed the Playful setup on mine. Was at a score of 88 and dropped it to 76. Also went from OK on packing to Poor.

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    Holy. Maybe that's why mine went from all green with a score of 96 @ 100% confidence down to either 80 or 84. I busted into the shock and with Red Line Like Water and my run today scored 92 and asked to firm up HSC a click or 2 but LSC was still in the yellow and wanting it softer.
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  79. #679
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    Quote Originally Posted by IRBent View Post
    Holy. Maybe that's why mine went from all green with a score of 96 @ 100% confidence down to either 80 or 84. I busted into the shock and with Red Line Like Water and my run today scored 92 and asked to firm up HSC a click or 2 but LSC was still in the yellow and wanting it softer.
    Yeah it went from lots of green and couple yellows to wanting everything but tokens made softer/slower.

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  80. #680
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    I'm still at odds with the machine though. I can make a rough rocky downhill section and it score 88 but the suggestions will be totally opposite of my 92 score after I continue on through our flow trail. My usual test loop has fire road climb followed by technical rocky section. I then turn around and bomb that rocky section to get HSC data. I finish it out with a flow trail with big jumps.
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  81. #681
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    How Do You Prefer To Tune Full Ride or Section Specific?

    So how do you guys tune? Do you tune for the full gamut, or do you key in on a single aspect such as big jumps or rocky rooted sections?
    The Shockwiz gave my shock a score of 88 @ 100% confidence after my rocky downhill section with a red suggestion to make HSC softer, and both LSC and bottom out resistance were yellow asking to be softer or remove resistance. But after I hit my flow section with jumps it came back with a better score of 92, all in the same session as the rocky downhill but this time it gave opposite suggestion to firm up HSC. I can't do both, make HSC softer and firm it up too.

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  82. #682
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    That's going to be a tricky one. What bike and shock?

    Maybe the rocks aren't big enough or there is room to charge a bit harder through them? Just throwing our theories.

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  83. #683
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    Shockwiz always gives you best settings for a particular style of riding. I always tune on a tough trail. That way I am good no matter where I go. There is not one setting for all disciplines enduro, AM, XC, Trail. Each discipline combined with riders style is going to net you a different settings. Rocky sections are continuous hits and deflections are one of the best places to get an all around tune. Unless you ride mostly flowy smooth trails. Jumps are 1 time big hits. SW almost always ask for a softer LSC I wouldn't worry about that. I wouldn't worry to much for any section section that appears in yellow. To me yellow readings are where rider preference starts to come into play. I think you are doing it right. 1. air pressure 2. tokens 3. rebound.. Once you get green on these 3 it's rider preference. Anyone of these 3 can be yellow also if you like your bike stiffer or softer. You may start out tuning for efficient but after concluding your tune may decide you want a lil more/less air depending on what you like this can change the air pressure to yellow. SW eliminates the mechanical guess work of tuning. However it can never eliminate the human element which rider preference. My SW currently is telling me to add more air for my efficient setting however I like the suppleness it currently has so I left it as is. If a change the setting to playful my air pressure would turn green. I've been using SW for a couple months now and have tuned 4 shocks with it Pike, Bluto, Monarch and a Fox float CTD. It definitely improved how each shock felt and worked.
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  84. #684
    dmo
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    I'm using Shock wiz to tune the suspension on my Scott Spark with the "twin lock" lock out lever. Do I start tuning with the lever fully open? That's what I've done so far.

    If I tune with the suspension fully open and then I try riding with lockout engaged 1 click will the tune be all off? Should I ride with the suspension fully open all the time? Or should I tune the suspension in the setting I use the most, which is 1 click toward lockout?

    I only fully lockout if I'm racing and sprinting on flat ground. Any help is appreciated.

    Thanks

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  85. #685
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    Quote Originally Posted by IRBent View Post
    So how do you guys tune? Do you tune for the full gamut, or do you key in on a single aspect such as big jumps or rocky rooted sections?
    The Shockwiz gave my shock a score of 88 @ 100% confidence after my rocky downhill section with a red suggestion to make HSC softer, and both LSC and bottom out resistance were yellow asking to be softer or remove resistance. But after I hit my flow section with jumps it came back with a better score of 92, all in the same session as the rocky downhill but this time it gave opposite suggestion to firm up HSC. I can't do both, make HSC softer and firm it up too.

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    Sounds like your tuning for 2 completely different trails, but they are linked together. I would try both suggestions and see which one you like the best. Somewhere in the middle might be the best too. The great thing is that you are trying different settings and learning what you like based on the trails you ride. I tune for the rougher sections of trail and acept that the smooth areas won't be ideal. If I'm riding mostly smooth I will change my settings to suit the terrain.

    Make a couple runs and only adjust 1 setting like lsc. Get a feel for how it changes the bike and see what you like. How you ride is just as important as what you ride. No two people will have the same setting even on the same trail.



    Quote Originally Posted by dmo View Post
    I'm using Shock wiz to tune the suspension on my Scott Spark with the "twin lock" lock out lever. Do I start tuning with the lever fully open? That's what I've done so far.

    If I tune with the suspension fully open and then I try riding with lockout engaged 1 click will the tune be all off? Should I ride with the suspension fully open all the time? Or should I tune the suspension in the setting I use the most, which is 1 click toward lockout?

    I only fully lockout if I'm racing and sprinting on flat ground. Any help is appreciated.

    Thanks

    Sent from my SM-G955U using Tapatalk
    Shockwiz only works if all your setting stay static. No lockouts, air, knob changes. If you change anything you need to start a new session. Also it doesn't work with platform suspension like Brian or teralogic.

  86. #686
    dmo
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    I understand that. Once I finish the tune what happens when I engage a lockout? Does the suspension no longer retain any of the properties that you set when shockwiz was used earlier?

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  87. #687
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    Quote Originally Posted by dmo View Post
    I understand that. Once I finish the tune what happens when I engage a lockout? Does the suspension no longer retain any of the properties that you set when shockwiz was used earlier?

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    That depends on how the manufacturer of your suspension implements their lockout.

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  88. #688
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    I'm a bit beside myself after this morning's run. Same loop as usual but when I got to the top of the rocky section and was ready to bomb back down it, I checked the Shockwiz app to find an error. I don't recall exactly what it said, something about not initializing/starting up correctly and was telling me to to the battery and start over. So I started a new session, bombed the rocky stuff and did screen shots. I then went down the flow trail to hit the jumps. Once back to my starting point the Shockwiz still wanted more, basically it wanted the climb data that I deleted earlier when I found the error. The data I did collect still wants things softer so I think I'm going radical. I'm about to toss 2 more tuning bands into both the positive and the negative chambers and set the air pressure to obtain @ 25% sag. I'll go back out later this afternoon and ride my test loop and see what gives.
    Bottom line, I want a very active shock that will eat up the rock gardens and I'm willing to loose efficiency and such to obtain it. When I started a new session before bombing the rocky section today there wasn't enough data to make the Shockwiz happy. But what was there suggested softening things up. The feeling coming down it was that the shock was occasionally bouncing over rocks rather than giving to them. So my feel says it's too firm as well. Adding tuning bands should allow me to lower the pressure while maybe maintaining my bottom out resistance. My thinking is the lower pressure at the top will allow the shock to move out of the way quicker. Either way, I'll learn something by going so radical.
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  89. #689
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    I wouldn't add spacers to the negative spring. Since is makes your initial stroke softer and mid stroke more linear.

  90. #690
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    Quote Originally Posted by alexbn921 View Post
    I wouldn't add spacers to the negative spring. Since is makes your initial stroke softer and mid stroke more linear.
    The negative chambers adds softness early on, not the spacers in the negative chamber. That's what you're saying, right? While I understand that, I added the negative spacers to keep the suspension from sagging too much. Adding positive spacers allow you to run lower pressure and still not bottom out. Lower pressure would have me sagging over 30%. Let's see how this setup feels. I now have 3 positive and 2 negative spacers and was able to drop 15psi and keep sag the same.
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  91. #691
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    Quote Originally Posted by IRBent View Post
    The negative chambers adds softness early on, not the spacers in the negative chamber. That's what you're saying, right? While I understand that, I added the negative spacers to keep the suspension from sagging too much. Adding positive spacers allow you to run lower pressure and still not bottom out. Lower pressure would have me sagging over 30%. Let's see how this setup feels. I now have 3 positive and 2 negative spacers and was able to drop 15psi and keep sag the same.
    Exactly. I tune my suspension for bottom out and then see where my sag is. Once you have a good setup that uses 95% on most rides getting the sag to the happy point is the next goal. This is personal and different from bike to bike.
    Sounds like you have a good handle on what the bands do and what kind of feel you want.
    I ended up with a compression ratio of 2.9 front and rear on my Tallboy 3. I don't have a lot of travel and needed a stiff ramp up to prevent bottom out.

  92. #692
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    I'm riding a 2015 Bronson and tuning a DVO Topaz shock. I've yet to move the Shockwiz to the Pike. I guess I'm a bit different than you. I don't want to bottom out but my trails don't offer real big jumps or drops either. Our flow trail has numerous table tops so I have a smooth downhill transition to land. I want super plush rock and root crushing suspension. When I sag @ 30% I tend to get a lot of peddle strikes. So my goal is to tune soft with @ 25% sag. Per the Shockwiz my dynamic sag has been 26%-28%. With only one tuning band on the positive side my compression ratio was 2.8. Adding the extra bands jumped it up to 3.0. I'd love to keep the negative bands away but I won't if pedal bob and strikes are too much.
    2015 Santa Cruz Bronson
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  93. #693
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    If I remove 1 shock spacer, and adjust air pressure back to my 30% sag, will that effectively reduce HSC?
    Thanks.

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  94. #694
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    Quote Originally Posted by Suns_PSD View Post
    If I remove 1 shock spacer, and adjust air pressure back to my 30% sag, will that effectively reduce HSC?
    Thanks.

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    Actually, I think that is opposite of what you'd want to do possibly. First of all, HSC & LSC isn't a function of air can pressure. It's how fast or slow your suspension can move which is controlled by your damper system. Now to discuss how air pressure theoretically could somewhat affect HSC. Imagine a shock or fork with low air pressure. You could push fast and hard and make it move through its travel quickly, hence HSC or high speed compression. Add more pressure and you won't be able to move it as fast. If you want to try to compromise because your shock doesn't have separate compression knobs, I'd say ADD a spacer and drop pressure instead of the other way around. Actually, I just did this same thing this afternoon in attempt to soften my HSC and LSC. I've yet to get home to analyze the data but I broke my PR on the ugly rocky downhill section. The rear felt very active and planted after adding two more tuning bands to both positive and negative chambers and dropping the air can 15psi.
    Last edited by IRBent; 07-24-2017 at 05:59 AM. Reason: Typo
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    I would be interested to hear what your data had to say about those changes

  96. #696
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    Finally got my Shockwiz!

    Going to tune my X2 tmr


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    Quote Originally Posted by lucifuge View Post
    OK, I went through the calibration again. When I let all the air out and go though the compression and extension parts, while I can compress fully, I can't get full extension...maybe I'm getting 80% it just feels to hard to go further. At the end of the calibration its telling me the CR is 2.0 and the that its sinking 8% into its travel when its not. Also the app's measurement vs the actual stanchions markers are off. When I put a CR manually of 2.5; it improves it almost 1-1. So that's what I left it at and went for a ride. Even after a decent ride its still on 49% wanting some jumps etc.

    Does a CR of approx 2.5 on a 160 Lyrik with an effective token installed @ 70psi sound reasonable?

    Also can you please confirm if the ratio is calculated in the calibration steps prior to inflation?
    I think getting the full compression/extension during calibration is critical to get the right CR. I ran into the same issue as you did... basically trying to pull a vacuum when trying to extend the fork after compressing it and letting out all the air. What I found is that the pressure (or lack thereof) during calibration is not important. What is important is to get full compression and extension when it asks to. My solution was to keep adding just a little bit of air until I could both fully compress and fully extend the fork by hand.... which can be a very small range of pressure which allows it! Good Luck!


    PS, I DO NOT mean that you should CHANGE the air pressure during the calibration! It needs to stay the same, it just doesn't matter what that value is.

  98. #698
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    Shockwiz



    Just calibrated my Fox X2 on Hightower 29er (Balanced style). Does the shock compression ratio of 2.4 looks ok? Thanks!


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  99. #699
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    Quote Originally Posted by IRBent View Post
    ...Now to discuss how air pressure theoretically could somewhat affect HSC. Imagine a shock or fork with low air pressure. You could push fast and hard and make it move through its travel quickly, hence HSC or high speed compression. Add more pressure and you won't be able to move it as fast. ..
    Not exactly. Damping is a function of shock speed and independent of the spring or air pressure. The optimal amount damping will depend on a number of factors, including pressure. So, changing pressure won't change damping, but it could change the amount of damping needed.
    Do the math.

  100. #700
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    Quote Originally Posted by chris9888 View Post


    Just calibrated my Fox X2 on Hightower 29er (Balanced style). Does the shock compression ratio of 2.4 looks ok? Thanks!


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    2.4 is what my X2 read. My fox 36 forks are 2.8 I believe.

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