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  1. #1
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    Which adjustable seatpost to buy?

    After trying to track down the ks 900 from the latest Bike magazine with no success I am looking again at the All mountain post AMP, gravity dropper(classic) and the CB joplin. Can you guys help me decide which one to buy? I am using it on a titus el guapo 30.9mm so 2 of the post's will require a shim! Thanks

  2. #2
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    Specialize Command Post? No shim needed. I just bought one and really like it.

  3. #3
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    Good job! Gd!!!

    Quote Originally Posted by mrjoshuanyc
    After trying to track down the ks 900 from the latest Bike magazine with no success I am looking again at the All mountain post AMP, gravity dropper(classic) and the CB joplin. Can you guys help me decide which one to buy? I am using it on a titus el guapo 30.9mm so 2 of the post's will require a shim! Thanks
    Hi mrjoshuanyc,

    I have almost four years of experience using all three models of the gravity dropper on six different bikes. Ive needed to use a shim on all the bikes weve installed them on and it has been a non issue regarding fit or performance. All three models have worked faultlessly, the customer service has been fantastic and the use of the GD completely changes the way you ride. For more details see my reviews under the product review section of Mtbr.com. The only downsides to the GD, IMHO, are:

    Id like a 5 drop and that isnt available.
    The lever that goes on the handle bar isnt as robust as some of its competitors.
    The cable routing on the Turbo model isnt as convenient as the cable routing on their original Gravity Dropper model. For this reason I stayed with the Gravity Dropper while my wife uses the Turbo.

    Also the folks who run the company are wonderful to work with. I highly recommend them and their product!

    Good luck with your decision!

    Michael
    If you can't keep the rubber side down......at least smile for the camera!

  4. #4
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    Quote Originally Posted by mrjoshuanyc
    After trying to track down the ks 900 from the latest Bike magazine with no success I am looking again at the All mountain post AMP, gravity dropper(classic) and the CB joplin. Can you guys help me decide which one to buy? I am using it on a titus el guapo 30.9mm so 2 of the post's will require a shim! Thanks

    mrjoshuanyc, try xxcycle.com. I am in Vancouver, BC so the shipping took a little time but it was worth it. I picked up a KS I900 seatpost 30.9 for my Giant Reign. It has the 5 inch height adjustment so the range is great.

    Only have a couple of rides on it but so far so good. Comparing the price it was substantially lower than any other adjustable post.

  5. #5
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    Thanks guys, I love the look of the specialized and the joplin but they are expensive and I think the joplin is unreliable. The gravity dropper seems alright but I hate the look of it. I still might go with the GD just because everyone says it works great but it's hard getting over the look and the need for shims. I looked into xxcycle in France for the KS i900 but I got cold feet trusting them to send it. The KS looks promising but dealing with them if something goes wrong worries me as well. The Specialized is alot of coin but I am sure they stand next to there products. If I could get a KS, I would in a heartbeat but even the suppliers are out of stock! Either it's good or it never made it to the states!

  6. #6
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    i run the maverick speedball, which is the same as the crank brothers joplin. I can't say enough good things about it. However, i feel the only design flaw is the clamping mechanism. it uses a wedge type system which works well, but when you want to readjust the angle of the saddle, the wedges dont tend to break free from the old position too well.

  7. #7
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    I've got 5 or 6 rides on my Joplin and love it. If you don't clamp it into the bike too tight it works great. Very predictable and reliable so far.

  8. #8
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    GD vs. Speedball

    I first purchased the 4" remote GD and use it on my bigger, heavier bike. What I didn't like was that the seat had to be unweighted ever so slightly to get the seat to drop. I also didn't like the fact that I didn't always want to go down the full 4 inches. I drilled a hole in the post to add an intermediate position which is nice for when you're cruisin down something more mellow. Still, I don't like the extra concentration the seatpost requires to drop it especially when I am starring down a scary section of trail. My mind should be elsewhere.

    I then purchased a new bike that had the correct size seat tube to take the Speedball (Joplin). Yeah, crazy I know, it was a good excuse to get a Mojo. Anyway.....I love the Speedball and it's perfect for the Mojo. Pull the trigger and the seat drops. No thinking required. It does leak some though and I've had it rebuilt once. Side to side saddle slop is annoying too - I'm thinking through a fix for that issue.
    Ride hard. Ride often.

  9. #9
    Te mortuo heres tibi sim?
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    mrjnyc: you're welcome to try out the Gravity Dropper on either of my two bikes if we meet up on a ride over the weekend. Granted mine are the non-remote variety, but still... get some first hand ride time on them. You've ridden with me a bit, and even with the non-remotes, I use them all the time.

    With the smaller 27.2mm post, you also have better options for running it on other/future frames that may have different post sizes. A couple bucks on a new shim for that frame and you're good to go. My posts have been on several different bikes this way.
    Florence Nightingale's Stormtrooper

  10. #10
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    Thanks D, I will try the post you have on your bike and when I get mine which I just ordered, you can try it as well. I took a gamble on the Joplin. Very mixed reviews but hopefully I will have all of the positive experiences. If not, it goes back on ebay and pick up a GD. Hope it comes soon, My El Guapo def needs it. Thanks everyone for the great replies.

  11. #11
    Te mortuo heres tibi sim?
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    Quote Originally Posted by mrjoshuanyc
    Thanks D, I will try the post you have on your bike and when I get mine which I just ordered, you can try it as well. I took a gamble on the Joplin. Very mixed reviews but hopefully I will have all of the positive experiences. If not, it goes back on ebay and pick up a GD. Hope it comes soon, My El Guapo def needs it. Thanks everyone for the great replies.
    it's really nice having one. my singlespeed my only mtb ride without one since it's the "XC" bike, and some rides i miss having one on there!

    having the ability to quickly and easily drop the seat while still pedaling along is awesome - you'll end up using it a lot around here.
    Florence Nightingale's Stormtrooper

  12. #12
    err, 27.5+
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    So many options and opinions. Search by the post names (joplin, amp, gd, rase, etc). There is good discusion and coverage of most of these posts. FWIW amp, rase, and gd are made in the USA. Oddly enough they are all mechanically locked.

    I have owned several gravity droppers and have found them to be 100% reliable. The customer service and availability of parts is awesome (say you want a different shaft, no problem). Currently I am in the market for a new post. The only reason I may end up straying from gd is to get some offset.
    Quote Originally Posted by saturnine
    that's the stupidest idea this side of pinkbike.

  13. #13
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    I just got my KS i-900 from xx cycles. they shipped it fast. like 8 days. If you wanted to find it in the states, it is branded by Fezzarri. They sell them in the US. So far so good, some of the nuts are loose and I need to get some lock-tight, but the 5 inch drop is great, there is no slop in the post and it's very well built.
    OVER THE LINE SMOKEY!

  14. #14
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    If they worked faultlessly, how would you know "customer service has been fantastic"?

    "All three models have worked faultlessly, the customer service has been fantastic"

    "the people are great to work with."
    I'm just saying.... it sounds inconsistent.

  15. #15
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    Quote Originally Posted by michaelsnead
    Hi mrjoshuanyc,

    I have almost four years of experience using all three models of the gravity dropper on six different bikes. Ive needed to use a shim on all the bikes weve installed them on and it has been a non issue regarding fit or performance. All three models have worked faultlessly, the customer service has been fantastic and the use of the GD completely changes the way you ride. For more details see my reviews under the product review section of Mtbr.com. The only downsides to the GD, IMHO, are:

    Id like a 5 drop and that isnt available.
    The lever that goes on the handle bar isnt as robust as some of its competitors.
    The cable routing on the Turbo model isnt as convenient as the cable routing on their original Gravity Dropper model. For this reason I stayed with the Gravity Dropper while my wife uses the Turbo.

    Also the folks who run the company are wonderful to work with. I highly recommend them and their product!

    Good luck with your decision!

    Michael
    100% Ditto. My experience has been identical to Michael's. I would not use any of the others. I think the loose cable attached to the seat clamp on other brands is both ugly and dumb. GD's customer service is second to none. The only changes I would make to the GD are better seat clamp ala a Raceface or a Salsa and maybe a more robust lever.
    "Everything popular is wrong." -Oscar Wilde

  16. #16
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    Wink Bingo!

    Quote Originally Posted by cjohnson
    "All three models have worked faultlessly, the customer service has been fantastic"

    "the people are great to work with."
    I'm just saying.... it sounds inconsistent.
    Hi cjohnson,

    My two comments are based on the following customer service interactions:

    Adding a 4/1 drop post to the 3/1 drop post I originally purchased. They did this for $25 as I recall but it happened well over 3 years ago and Im way over 50 years old so my recall is suspect.
    Changing from a right hand control to a left hand control.
    A complete rebuild of my original GD for the princely sum of $15. I live in CA, ride year round and it took almost 3 years before this maintenance was required. The turnaround time was just a few days.
    Personal cell phone access to Wayne, the owner, whenever I needed it regarding installation on the bike. Im not much of a mechanic so Im guessing that very few other riders would need this.

    Never the less my friends will tell you that youve correctly identified me as being consistently inconsistent in most of my efforts at communication.

    Take care,

    Michael
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  17. #17
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    Not experienced with the GD I can only speak about the Maverick and Joplin as I have both on my bikes. These are better than butter and work very well. I recommend the Joplin to friends everyday. Awesome product!

  18. #18
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    Just bought a 2nd hand Speedball and think its the dogsdoodaas Going to get a Cobra i900 later in the year

  19. #19
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    My GD hasn't been great. It works but isn't consistent. I talked to Wayne about it once, he told me to adjust the lock collar but I haven't been able to find a position that has it consistently engage top or bottom. I think the boot gets in the way at full compression, anyone else have that problem? Mine may be a lemon but if I bought another it would certainly be the Turbo. Having to tap to get it to come back up is annoying.

    I also have a Speedball and like it's lever much more. I also like the infinite adjustability, not having to get it all the way down but can push it down as far as I want. It's weakness is that it's only a 3" drop and the two I've had seize and have to be cleaned if they get muddy so now I'm running an a section of inner tube to protect it. The clamp isn't ideal but it hasn't been a problem past the first week and I like the setback.

    I'm also interested in the KS Cobra.
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  20. #20
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    Quote Originally Posted by artnshel

    I'm also interested in the KS Cobra.
    The Cobra has much the same problems as the Speedball/Joplin.A mate has had loads of problems with the clamp,i don't think its designed for heavier riders.He now runs thicker seat rails and has bodged it to hold tight.Having said that it has 5" of travel so its high on my list.
    Pity they've up the prices by 25%.

  21. #21
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    Quote Originally Posted by artnshel
    My GD hasn't been great. It works but isn't consistent. I talked to Wayne about it once, he told me to adjust the lock collar but I haven't been able to find a position that has it consistently engage top or bottom. I think the boot gets in the way at full compression, anyone else have that problem? Mine may be a lemon but if I bought another it would certainly be the Turbo. Having to tap to get it to come back up is annoying.

    .
    In the beginning I also had that experience until I started paying attention to the position of that lock collar; found I was changing it in between rides by grabbing my bike there (long time habit) when loading the bike onto a rack, moving it around, etc. Can't help with the bit of weighting/unweighting needed, though, that would be nice not to have to do, but you get used to it. Overall I'd still choose a GD, maybe an AMP, but for now don't want to deal with the pneumatic posts; I've seen far too many problems on the Maverick version (and have talked to several guys about their Joplins, same problems).

    I've not tried the Turbo, but know some who have one and like it a lot. Next time I add one to the fleet it's going to be a Turbo....
    "...the people get the government they deserve..."
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  22. #22
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    Quote Originally Posted by artnshel

    I also have a Speedball...

    ....have to be cleaned if they get muddy so now I'm running an a section of inner tube to protect it. The clamp isn't ideal but it hasn't been a problem past the first week and I like the setback.
    Muddy conditions may require more preventative maintenance or inventive ways to keep the muck out (like your tube idea). I've also heard of guys putting lizard skins over them, and also using the boot from a GD.

    I haven't really had any problems with my Speedballs, but I often tend to unscrew the cap and check the condition of the lube around the shaft and bushing to ensure it is not contaminated.

    I would like to try a GD turbo, but honestly they are fugly IMO. The cable routing is also not aesthetically pleasing. They look like they belong on a walmart bike. Has anyone thought the same thing but changed their mind when they saw one in person? I know sometimes pictures do not do a product justice.
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  23. #23
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    Double-thumbs-up for AMP post! And over the top customer service. I finally broke a seat post part and emailed on a Saturday, got a reply by Sunday and he sent out the part on Monday, plus a spare for free (I had asked to pay for both). It had worked perfectly for over a year. There's maybe 2mm play now but I don't feel it while riding.

  24. #24
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    Well my Joplin came in the mail today and I hope it performs as well as it looks! The quality looks sick and I can't wait to mount it and give it a try. Hopefully having it will give me the confidence I am looking for! If not, at least it looks cool... Thanks again guys for all he input. I will post up my review when I get a chance to try it out.

  25. #25
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    Hope it works better than most of its kind. Not the best track record out there...
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    suum quique

  26. #26
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    Quote Originally Posted by mrjoshuanyc
    Well my Joplin came in the mail today and I hope it performs as well as it looks! The quality looks sick and I can't wait to mount it and give it a try. Hopefully having it will give me the confidence I am looking for! If not, at least it looks cool... Thanks again guys for all he input. I will post up my review when I get a chance to try it out.

    Congrats on the new Joplin! To ensure a long and enjoyable life with your Joplin, read through this thread for helpful maintenance tips and tricks.

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  27. #27
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    The GD was the only one to fit my Yeti, so I got the Turbo. The complaint I have, and it is aggravated by the sloping top tube, is that the cable gets knocked around. I tried a homemade mod which didn't work. I'm thinking about getting a fitting machined so the cable exits 90 degrees down instead of out. Otherwise love it, and glad I got the remote.
    Chet

  28. #28
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    Quote Originally Posted by chet wright
    The GD was the only one to fit my Yeti, so I got the Turbo. The complaint I have, and it is aggravated by the sloping top tube, is that the cable gets knocked around. I tried a homemade mod which didn't work. I'm thinking about getting a fitting machined so the cable exits 90 degrees down instead of out. Otherwise love it, and glad I got the remote.
    Chet
    I think some people have used a V-Brake noodle to solve that problem on the Turbo. If you do a search I bet there's a picture in a thread on here somewhere.
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  29. #29
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    I've had a Joplin for about a year. Its thrashed. The side-to-side slop is terrible. And now the seat moves up in the clamp if you accidently smack your butt on the seat. What a waste of money. I'll be getting one of these:

    http://www.fezzari.com/products/inde...85/42#Features

  30. #30
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    I have a joplin lever , just bought an i900 lever (same as fezzari)

    I have had no problems with the joplin, apart from they are way to expensive now. Also if you fit one , clean out all the grease from the seat tube and used Ritchey Liquid Torque or similar. If you tighten the seat clamp to tight it doesn't slide freely, and if not tight enough they drop , the liquid torque sorted this out.
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  31. #31
    kneecap
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    Quote Originally Posted by renderedtoast
    I've had a Joplin for about a year. Its thrashed. The side-to-side slop is terrible. And now the seat moves up in the clamp if you accidently smack your butt on the seat. What a waste of money. I'll be getting one of these:

    http://www.fezzari.com/products/inde...85/42#Features
    Nice looking product, the extra drop compaired to my maverick would be cool, but looks like only 31.6 size? Seems odd they chose that size since 30.9 is more common in the industry, so wouldn't fit any of my rides.

  32. #32
    attending to my vices
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    some pics of my kind shock i900-r








    so far so good. I have had 2 very long rides with it so far.

    THE BUILD QUALITY: The construction of it is great. For me the seat clamp has been simple and strong. I have had no flex or loose seat clamp issues that others have run into. I weigh 175#. The post feels and looks very well made. I did have some issues with loose nuts though. In the bottom of the post is a retaining bolt that must be tight to keep the internal post from over extending. I noticed it when lifting the bike from the seat. At first it was tight, then there was about 1/2 inch play, then the i could pull the internal post out. It should be noted that this did not effect the functional ability of the post. When I got home I tightened it down and the 2nd ride had no issues. Also, the pivot bolt on the remote lever is constantly loose, although not loose enough to fall out, it seems to need to be a bit loose for the lever to pivot, when it's loose, it doesn't feel sturdy. I think that if I add a washer under it, it will be able to stay tight and still pivot freely. The post has NO SLOP and hasn't shown any signs of getting slop after 14 hours of riding on it.

    PERFORMANCE: the added weight is a non issue, compared to my old post, it felt minimally heavier. I ride trails that this post was designed for and being able to drop a full 5" every minute, or every other 5-10 minutes is fricken' fantastic. I have way more power and it saves energy. I used to stop a minimum of 10-20 times to adjust my seat post on the ride. no more. The 5" drop is enough to go from pretty much fully extended climbing height, to as low as I could drop my previous post. With this post, because it is shorter when lowered, I can now drop the seat even lower which is great, and I can still raise it up from there to a nice cruiser level. The system is simple and mechanical, no air to leak or break. It has an infinite range of adjustability, which is not only convienant, smart and helpful, it is fun to play with! No notches to hit etc..

    OVERALL: I am very pleased. It's built well, has no slop, huge 5" drop, the only issues were a few loose bolts and that's an easy adjustment, and has been reliable right out of the box. Not to mention it is cheaper than the others which makes me laugh. Yes, it is built in Taiwan, so are most quality components these days! The Taiwanese know how to build and should not be put into comparison with lower budget chinese made crap.

    It is true, these seat posts, regardless of which one you get, are an amazing addition to your bike if change seat post heights often.
    OVER THE LINE SMOKEY!

  33. #33
    Sheffield,South Yorkshire
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    Quote Originally Posted by kneecap
    Nice looking product, the extra drop compaired to my maverick would be cool, but looks like only 31.6 size? Seems odd they chose that size since 30.9 is more common in the industry, so wouldn't fit any of my rides.
    Strange that its 31.6,according to what i've been told the Cobra 900i is being sold under the Fezzari name in the US.The cobra is 30.9,so why not the Fezzari

  34. #34
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    Quote Originally Posted by michaelsnead
    Hi mrjoshuanyc,

    I have almost four years of experience using all three models of the gravity dropper on six different bikes. Ive needed to use a shim on all the bikes weve installed them on and it has been a non issue regarding fit or performance. All three models have worked faultlessly, the customer service has been fantastic and the use of the GD completely changes the way you ride. For more details see my reviews under the product review section of Mtbr.com. The only downsides to the GD, IMHO, are:

    Id like a 5 drop and that isnt available.
    The lever that goes on the handle bar isnt as robust as some of its competitors.
    The cable routing on the Turbo model isnt as convenient as the cable routing on their original Gravity Dropper model. For this reason I stayed with the Gravity Dropper while my wife uses the Turbo.

    Also the folks who run the company are wonderful to work with. I highly recommend them and their product!

    Good luck with your decision!

    Michael
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  35. #35
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    Wink

    Lucked out with xxcycles - googled the i900 and came up with..

    www.gocycle.de

    E-mailed them - no stock, they e-mailed back when they came in, ordrered, paid with PayPal for extra insurance - worked out at 120 ($160?) for UK users of this forum.

    On its way with teutonic efficiency from the Fatherland!

    Will post reviews upon receipt & use!

  36. #36
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    got a good deal on a joplin and it's been great so far for almost 6 months. there is slop, but i don't notice it on the trail. the lever took a bit to get used to, but works for me fine and love the simplicity of not having to route another cable.

  37. #37
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    What about the RASE Black Mamba? 9" of drop sounds like it'd cover everything.

    http://www.rasebike.com/

  38. #38
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    Quote Originally Posted by deck
    What about the RASE Black Mamba? 9" of drop sounds like it'd cover everything.

    http://www.rasebike.com/
    Pretty interesting design. That 9" model will most likely run into interference issues on alot of frames though. The 6" model mentioned in the demo video looks promising.

    The interbike demo video is pretty cool, but if the demonstrator says "um" one more time, I am going to go postal. I stopped counting when he got to 50 times.

    http://www.rasebike.com/demo.htm
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  39. #39
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    Strong enough for clamping to repair stand?

    Anyone know if these adjustable seatposts can be safely clamped to a repair stand? Or would I have to swap it out to a regular seatpost before clamping?

  40. #40
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    Good job! Non Issue for the GD

    Quote Originally Posted by sillymonkey
    Anyone know if these adjustable seatposts can be safely clamped to a repair stand? Or would I have to swap it out to a regular seatpost before clamping?
    Hi sillymonkey,

    I've clamped all three models of the GD onto my repair stand for a number of years and had no problems.

    Take care,

    Michael
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  41. #41
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    Quote Originally Posted by sillymonkey
    Anyone know if these adjustable seatposts can be safely clamped to a repair stand? Or would I have to swap it out to a regular seatpost before clamping?
    I clamp my bikes by the Speedballs all the time.

    No problems!
    Maverick Durance Ano-DUC32/C KING/XTR
    Mav ML8 Ano-DUC32/X0
    Mav ML8-DUC32/I9/XTR
    09 Spec. Demo-Totem-Ti DHX
    Norco Team DH

  42. #42
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    Yeah, I am having a hard time choosing between the Rase and GD or AMP.

  43. #43
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    Quote Originally Posted by moshelove
    some pics of my kind shock i900-r

    It is true, these seat posts, regardless of which one you get, are an amazing addition to your bike if change seat post heights often.
    Hello,
    Could you tell me the length of the i900 main body housing. Also, Is the post 5" or Zero or does it allow you to leave it where you want? Sorry if the question has already been asked.

  44. #44
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    Quote Originally Posted by wormvine
    Hello,
    Could you tell me the length of the i900 main body housing. Also, Is the post 5" or Zero or does it allow you to leave it where you want? Sorry if the question has already been asked.
    the main body housing is only 230mm. When the post is retracted it is much shorter than a standard post. This post can be used in many shorter, interrupted seat tubes because of this. When it is extended, it has a full length of 400mm from seat clamp to the bottom.

    The post has an infinitely adjustable range between 5" extended and fully retractable. Even from my first ride, I felt this freedom of adjustability to be one of the post's strong points, as well as the healthy 5" full inches of drop which is certainly not "too much" by any means but actually seems like a minimum drop if you want to be able to go from full climbing extension to a very low DH drop on the fly. I believe that users of the 3" drop posts still need to re-clamp the post when riding to benefit from the highest and lowest desired positions.

    I really like this post so far and haven't had any issues!
    OVER THE LINE SMOKEY!

  45. #45
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  46. #46
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    Did the demonstrator saying "um" so often bother you? I think he needs to rehearse.
    Maverick Durance Ano-DUC32/C KING/XTR
    Mav ML8 Ano-DUC32/X0
    Mav ML8-DUC32/I9/XTR
    09 Spec. Demo-Totem-Ti DHX
    Norco Team DH

  47. #47
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    Quote Originally Posted by moshelove
    the main body housing is only 230mm. When the post is retracted it is much shorter than a standard post. This post can be used in many shorter, interrupted seat tubes because of this. When it is extended, it has a full length of 400mm from seat clamp to the bottom.

    The post has an infinitely adjustable range between 5" extended and fully retractable. Even from my first ride, I felt this freedom of adjustability to be one of the post's strong points, as well as the healthy 5" full inches of drop which is certainly not "too much" by any means but actually seems like a minimum drop if you want to be able to go from full climbing extension to a very low DH drop on the fly. I believe that users of the 3" drop posts still need to re-clamp the post when riding to benefit from the highest and lowest desired positions.

    I really like this post so far and haven't had any issues!
    Hey, Thanks a lot for the info. That 230mm is from the bottom the the post to the top of the red cap correct? I want to put this on my wife's 09' Giant Reign and maximum insertion depth is only 6". Maybe 7" if I remove a small aluminum lip inside the seat tube. (not sure I should do this).
    So I am concerned that the post will stick out too far and the lowest point will still be too high.
    Thanks again!
    Last edited by wormvine; 03-29-2009 at 10:30 AM.

  48. #48
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    Ah and um--seems fairly common and annoying once you focus on it.

    http://www.bikeequipmentonline.com/K...-i900/p/BE1513

  49. #49
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    is there an adjustable seatpost with 25 mm offset out there?

    I really want an adjustable seatpost! Is there an adjustable with a 25 mm offset?? My bike fits my proportions just perfectly as it is (small Ibis Mojo with FSA carbon/25 mm offset seatpost, and 110 mm stem which I've been riding for 2.5 years.)

    thanks!

  50. #50
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    offset?

    Is there an adjustable offset? I need 25 mm. thanks.

    The only reason I may end up straying from gd is to get some offset.

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