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  1. #1
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    Yelli Screamy Sram XX1 compatibility issue

    I have started building up my CanfieldBrothers Yelli Screamy and I have run into a problem with installing my XX1 crankset. As you can see in the pictures I have 2 drive side spacers and I am still un able to fit the cranks on without the teeth hitting the chain stay. I still need a good 4-5mm of clearances. I bought the Q156 GXP version and am now thinking that the Yelli is only compatible with the Q168 version of the XX1 cranks. Is this my problem? or is there some other work around. I dont want to buy the Q168 version and run into the same problem.

    Yelli Screamy Sram XX1 compatibility issue-photo-may-27-12-26-07-pm.jpgYelli Screamy Sram XX1 compatibility issue-photo-may-27-12-26-46-pm.jpgYelli Screamy Sram XX1 compatibility issue-photo-may-27-12-27-59-pm.jpg

  2. #2
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    You should cross-post this in the Canfield forum and look around some in there - I remember a recent thread concerning getting different combos to work but I think it was Shimano 2x.
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  3. #3
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    How big is the chain ring you are trying to run?

  4. #4
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    The stock 32t XX1 chainring.

  5. #5
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    I don't think the Q factor would matter, you might have to drop down to a 28 or 30 chainring.

    Qfactor would matter more for chainstay clearance, and after looking at your pics you probably do need the higher Q cranks as it looks mighty close there are well.

  6. #6
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    Edit, reading comprehension sucks.

    I would put a smaller ring on it! You may be able to get by with a 30t but probably a 28t.
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  7. #7
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    I can run a 32T on my Yelli no prob.

  8. #8
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    Quote Originally Posted by Swab View Post
    I have started building up my CanfieldBrothers Yelli Screamy and I have run into a problem with installing my XX1 crankset. As you can see in the pictures I have 2 drive side spacers and I am still un able to fit the cranks on without the teeth hitting the chain stay. I still need a good 4-5mm of clearances. I bought the Q156 GXP version and am now thinking that the Yelli is only compatible with the Q168 version of the XX1 cranks. Is this my problem? or is there some other work around. I dont want to buy the Q168 version and run into the same problem.
    It looks like you need a 28t...
    Last edited by Max24; 03-10-2015 at 12:53 AM.

  9. #9
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    I would put a smaller ring on it! You may be able to get by with a 30t but probably a 28t.

  10. #10
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    Well, you can have pointlessly short shainstays that accomodate huge tires, or you can run proper gearing.
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  11. #11
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    Arm contact will be an issue for sure.
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  12. #12
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    Damn was thinking about doing this myself, keep us posted on your solution, a 28 ring isn't the ideal one.

  13. #13
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    Talked to my wrench buddy who ordered the group and he said that he could order the 168 Q factor and keep the other ones as stock, so it might just work out. Ill try getting him to order a 28t chainring also. Cant hurt to have it as a backup.

  14. #14
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    SRAM lists the chainline for the XX1 as the same regardless of Q-factor, so unfortunately that isn't going to solve the issue.

    XX1 puts the chainring at a 49mm chainline. This is about 1.5mm further inboard than the middle ring of a typical 3x which is what the frame was designed around (32t in the middle ring). To compound the issue, the teeth on the XX1 ring are quite a bit taller than a typical ring(meaning it has the OD of maybe a 34t).

  15. #15
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    Quote Originally Posted by Swab View Post
    I have started building up my CanfieldBrothers Yelli Screamy and I have run into a problem with installing my XX1 crankset. As you can see in the pictures I have 2 drive side spacers and I am still un able to fit the cranks on without the teeth hitting the chain stay. I still need a good 4-5mm of clearances. I bought the Q156 GXP version and am now thinking that the Yelli is only compatible with the Q168 version of the XX1 cranks. Is this my problem? or is there some other work around. I dont want to buy the Q168 version and run into the same problem.

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    Am running XX1 with 156qf 30T ring with no spacers on bb without any issues.
    Yelli Screamy Sram XX1 compatibility issue-yelli-xx1-2.jpgYelli Screamy Sram XX1 compatibility issue-yelli-xx1-3.jpgYelli Screamy Sram XX1 compatibility issue-yelli-xx1.jpg

  16. #16
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    Quote Originally Posted by Swab View Post
    As you can see in the pictures I have 2 drive side spacers and I am still un able to fit the cranks on without the teeth hitting the chain stay.
    Quote Originally Posted by bervin View Post
    Am running XX1 with 156qf 30T ring with no spacers on bb without any issues.
    Swab, it's also important to note how the GXP cranks are aligned. The drive side floats and is positioned when the non-drive side is clamped against the crank arm. Adding spacers to the drive side won't affect chain line until you've added so many that it won't assemble properly.

  17. #17
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    Quote Originally Posted by car_nut View Post
    Swab, it's also important to note how the GXP cranks are aligned. The drive side floats and is positioned when the non-drive side is clamped against the crank arm. Adding spacers to the drive side won't affect chain line until you've added so many that it won't assemble properly.
    Thats another issue i was have having. Because of the spacers i did not have enough spindle to install the non drive side. Ill look into taking out the spacers and installing the non drive side to see if it will fit. Hopefully i can just order a smaller chain ring and finally ride this bike!

    This is my first from scratch bike build so its a great learning experience. Ill test this out when i get home from work and will post an update.

  18. #18
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    Swab, looks to me as if the spacers are keeping the spindle from going far enough into the non drive side bearing and allowing the spindle to center itself. From your pic it looks like the crank is at a slight angle causing the issue. I would remove the spacers and give it a go. I fit the 30T ring with your setup no problem and I think I would have enough room for the 32T as well.

  19. #19
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    Quote Originally Posted by Le Duke View Post
    Well, you can have pointlessly short shainstays that accomodate huge tires, or you can run proper gearing.
    Nice! Throw insults at a person asking for help with a problem and tell them their bike is stupid. Have you ridden one? Or do you just inherently know what people should and should not ride? (in case you are wondering, my questions are rhetorical)

  20. #20
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    Thats great news bervin. Ill head to my buddies shop ASAP and try this all out. Hopefully it all works out.

  21. #21
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    I dont know if this will help but.. I am running 30t wolf tooth components chainring on shimano XT cranks(2x10). It looks like 32t would fit on mine. Wolf tooth makes chain rings to fit xx1. I am running no chain retention devise as it is not needed.

    Good luck I found this set up to be the best so far for the YS

    Kell

  22. #22
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    Quote Originally Posted by Le Duke View Post
    Well, you can have pointlessly short shainstays that accomodate huge tires, or you can run proper gearing.
    Very helpful. Please PM me your list of approved bikes so I don't buy anything as awesome as the Yelli next time.

  23. #23
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    Swab, did you work this out? Curious to hear the resolution. Thinking about going XX1 on my YS.

    Morgan

  24. #24
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    Yelli Screamy Sram XX1 compatibility issue

    Another option would be to try a XX1 spider for BB30 instead of GXP. These are "flatter" with less offset and will locate the chainring closer to the crank arms and farther from the stays. I am running one I picked up on eBay with XO GXP cranks on my 1x10 setup and it works just fine.

    XX1 spiders show up on eBay from time to time. Also, North Shore Billet said they were going to make XX1 compatible spiders, although I don't know if they are available yet.

  25. #25
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    Yelli Screamy Sram XX1 compatibility issue

    Just checked NSB's site. Looks like they have GXP and BB30 spiders available.

    http://northshorebillet.com/shop/1x11-spiders/

  26. #26
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    XX1, so nice!

    Hi all. I have just recently finished an XX1 upgrade on my Yelli. I used a 168 Q GXP crank with Chris King BB with 2 spacers, one either side plus 2 of the small plastic shims, one either side. 30T chainring which just fits. I also tried a 28T chainring only issue with that is that the chain is real close to the chainstay when in the smallest cog down back, but for the one ride I had it on it never touched the stay. I also didn't care for the ratio the 30T is a better fit for my riding. All the attached pictures are with the 30T, the crankarm has a crankboot.

    Personally I believe Sram have hit a home run with XX1. So quiet, so smooth, shifts are effortless even under load. If you can swing the $ treat yourself, plus front derailleurs suck on a Yelli.
    Attached Thumbnails Attached Thumbnails Yelli Screamy Sram XX1 compatibility issue-dscn0193.jpg  

    Yelli Screamy Sram XX1 compatibility issue-dscn0194.jpg  

    Yelli Screamy Sram XX1 compatibility issue-dscn0195.jpg  

    Yelli Screamy Sram XX1 compatibility issue-dscn0197.jpg  

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  27. #27
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    You can get an MRP bling ring - those run about 2.5mm further outboard and also don't have the wider alternate tooth profile. Gives you lots of extra clearance and saves some weight, but you'll lose a little bit of the chain retention capabilities of the whole system.

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  28. #28
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    Quote Originally Posted by Walt View Post
    You can get an MRP bling ring - those run about 2.5mm further outboard and also don't have the wider alternate tooth profile. Gives you lots of extra clearance and saves some weight, but you'll lose a little bit of the chain retention capabilities of the whole system.

    -Walt
    I'm not sure if you would want to run the chainring much further outboard. Achieving a smooth chainline can be challenging on the Yelli with its short chainstays, the further inboard the better.

    Part of the SRAM XX1 magic is the ability of the system to retain the chain. Not worth compromising.
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  29. #29
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    You should read this thread, looks like any chainring will lose its gripping power over time, which makes sense to me.

    Wolf Tooth Components. XX1 type chainring « Singletrack Forum

  30. #30
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    Good points

    I have a 28t MRP ring at 51mm chainline running on a _400_mm (that's a LOT shorter) chainstay 29er and it works fine. I don't think you'd have a problem.

    But it's certainly true that the chainline will be outside of what the XX1 is designed for if you use the MRP ring. And yes, chain retention is a big deal, of course. I was just throwing out another option.

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    Yelli Screamy Sram XX1 compatibility issue

    Sorry about the slow response guys. Finally got the bike working and can't stop riding! I was able to get a 28t chainring on the cheap so I'm currently running that. Think I might gear up to 30t when I get the chance given that I have enough clearance now. I have one drive side BB spacer and 2 1mm spindle spacers to give enough clearance on the drive side crank arm. As you can see in the photo the clearance is very very close. But it works like a dream. The xx1 group is amazing. Quick, totally silent and smooth as butter.

    This bike is the most fun ride I have ever had.

    Yelli Screamy Sram XX1 compatibility issue-imageuploadedbytapatalk-21370284380.762889.jpgYelli Screamy Sram XX1 compatibility issue-imageuploadedbytapatalk-21370284391.670512.jpgYelli Screamy Sram XX1 compatibility issue-imageuploadedbytapatalk-21370284405.637145.jpgYelli Screamy Sram XX1 compatibility issue-imageuploadedbytapatalk-21370284441.737184.jpg

  32. #32
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    Thanks, Swab. Those crankarm clearance pics are still with the Q156 cranks, right? Guessing the wider cranks would be ideal.

    Morgan

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    Yelli Screamy Sram XX1 compatibility issue

    Yes that's with the Q156. There's probably more clearance if I were to use a thinner tube for the chain stay cover but it works for now so ill be leaving it be.

  34. #34
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    Swab, good news glad you were able to get it going.


    Bret

  35. #35
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    In the fourth pic it's interesting how small the gap is between your chain and the chain stay when you are in the 10t cog. I have a totally different frame but I am surprised there is that much difference between my bike and yours. Below is a pic of my XX1 install, notice the gap is 25 mm when I'm on the 10t cog.

    Another thing I've noticed on my XX1 install, and I would think it would be similar for yours, is I have exactly a 3mm gap between chain the frame when I'm on the 10t cog (looking down from above). Not much clearance for the chain but enough I guess. I'm running a 12x142 thru axle so maybe I have less clearance than if I had a QR axle.
    Attached Thumbnails Attached Thumbnails Yelli Screamy Sram XX1 compatibility issue-chain_gap-1.jpg  

    Last edited by Epic_Dude; 06-03-2013 at 05:35 PM.

  36. #36
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    Yelli Screamy Sram XX1 compatibility issue

    What chainring are you running up front? I have the 28t on there right now so it doesn't get very much height

  37. #37
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    Quote Originally Posted by Swab View Post
    What chainring are you running up front? I have the 28t on there right now so it doesn't get very much height
    I'm running the stock 32t ring up front, so difference must in the chainring diameter. Some chain stay wrap is a definite must.

  38. #38
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    So am i right in thinking that with the 168 Q factor cranks there will be plenty of clearance on the stays but the standard 32 tooth ring will catch. As a result you either need to go to a 30 tooth ring or perhaps a 32 tooth MRP bling ring which has a different offset.

  39. #39
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    Quote Originally Posted by Bunzl View Post
    So am i right in thinking that with the 168 Q factor cranks there will be plenty of clearance on the stays but the standard 32 tooth ring will catch. As a result you either need to go to a 30 tooth ring or perhaps a 32 tooth MRP bling ring which has a different offset.
    Correct
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  40. #40
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    Great thanks

  41. #41
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    I have a Saint crankset with a 22t granny and cannot utilize my smallest two cogs w/o the chain rubbing on the stay.

    Love the bike though. This thing rails berms and is very steady on slow tech stuff.

  42. #42
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    Has anyone tried the wolf tooth direct mount GXP chainwheel on a Yelli?
    I have this on my current bike, works great, but have ordered YS and sounds like my 34T won't fit. I think the direct mount brings the chainline in a little, same as XX1, anyone know what chainline a 32T XX1 runs at OK on the Yelli?

  43. #43
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    Quote Originally Posted by jonshonda View Post
    I have a Saint crankset with a 22t granny and cannot utilize my smallest two cogs w/o the chain rubbing on the stay.

    Love the bike though. This thing rails berms and is very steady on slow tech stuff.
    Why would you be in those gear combos?

  44. #44
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    I wasn't trying to say I ride small small, just that a small front ring on the front might cause trouble with the chain rubbing the cs.

  45. #45
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    Yelli Screamy XX1 32t GXP BB

    Just finished my Yelli Screamy build. I'm running SRAM XX1 Q156 32t single front ring with a GXP BB. To create the required chain ring/chain stay clearance I machined a small spacer to locate on the crank spindle and sit between the inboard shoulder on the NDS bearing inner race. Dimensions are OD - 27mm, ID - 22mm, thickness - 2.2mm.

  46. #46
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    I tried something similar but found the NDS crank wouldn't stay tight - was older alu GXP crankset, so had previously been tightened without spacer on previous frame, using Wolftooth 32t chainring.
    Then fitted 30t chainring and took out spacer and been great ever since.

  47. #47
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    Cheers, I'll make sure to keep an eye on the NDS crank for looseness.

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