Anyone running XX1 or Sram equivalent drive train on a cross bike? If so, what front chainring are you running and was there any modifications needed to run this set up? I have the wheels, cassette and derailleur and hoping the CX1 shifters work.
Xx1 on cross/gravel bike
Junktech
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Anyone running XX1 or Sram equivalent drive train on a cross bike? If so, what front chainring are you running and was there any modifications needed to run this set up? I have the wheels, cassette and derailleur and hoping the CX1 shifters work.
Unless I'm mistaken, the Force CX1 (aka Force 1, I think) shifters use the "Exact Actuation" technology, and the only 11 speed rear clutch derailleur that they're compatible with is the Force 1 rear derailleur. I'm pretty sure that all Sram road shifters use Exact Actuation. They're also compatible with the 11 speed non-clutch road rear derailleurs, like Force 22 for example. There are some 10 speed mountain derailleurs that they are compatible with as well, such as the GX 10 speed rear derailleur.
If you want XX1 or even XX1 Eagle, you could use this with the trigger shifters: https://paulcomp.com/shop/components/sram-shifter-adaptor/
Source: I'm in the market for a drivetrain right now and have been scrutinizing over these details for months. This is the only reason I know, because I've spent too many hours scouring the Sram site in order to make sure I don't buy incompatible parts.
If you want XX1 or even XX1 Eagle, you could use this with the trigger shifters: https://paulcomp.com/shop/components/sram-shifter-adaptor/
Source: I'm in the market for a drivetrain right now and have been scrutinizing over these details for months. This is the only reason I know, because I've spent too many hours scouring the Sram site in order to make sure I don't buy incompatible parts.
XX1 rear derailleur will not work with CX1 shifters unless you modify the cable router. On Arts Cyclery on this page they actually have pics showing the difference between XX1 and CX1.
Art's Cyclery Blog » Science Behind the Magic | Drivetrain Compatibility
Art's Cyclery Blog » Science Behind the Magic | Drivetrain Compatibility
If you did do that mod (which I don't understand but am willing to accept works) there would be no way to adjust cable tension, unless you use something line an inline barrel adjuster.
But why go through all that trouble instead of using the Force 1 rear derailleur?
That was my next question if the CX1 derailleur would work with XX1 Cassette?
Well to be very technical, the CX1 derailleur is a medium cage that is not supposed to be used with a cassette bigger than 11-36. However the long cage version of the Force 1 (the same rebranded derailleur) will work with up to an 11-42.
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I dunno if this helps, but I'm running a Rival 1 long cage derailleur with a 9-42 cassette, an XX1 crank with a 34 tooth chainring, and an Apex shifter. It all plays together nicely for me. My limited experience with mixing SRAM road and MTB is that it works with the exact actuation stuff and isn't too fiddly.
Chainlines with XX1 are kind of the wild, wild, west. There are multiple possibilities and a lot of them work to varying degrees. The setup I have is on a frame with 135mm dropouts and a 68mm bb shell with a GXP bb and a 2.5mm spacer on each side with 440mm chainstay length. What works for you is really gonna depend on your individual frame geometry. If you look on SRAM's website they have frame fit specification PDFs that are pretty helpful.
One thing with XX1 and similar cranks that isn't always well understood or documented is chainring offset. My XX1 is using a spider mounted chainring. It's chainline is 49mm. If I were to switch to a direct mount, I would need to switch to a direct mount ring with a 6mm INWARD offset to make up for the width of the spider that won't be there if I want the same chainline. FWIW, I'm in the process of building up another of these frames and I'm wanting to use a bigger, 40t chainring. I don't have the chainstay clearance to do it with a 49mm chainline and a spider mounted ring, but by using a 0mm offset direct mount chainring I'll move my chainline out by 6mm and gain the clearance I need. That 6mm of outboard movement in my chainline won't be ideal, but it really only adds up to a gear and a half's width in the back, so my chain will be dead straight between 6 and 7 instead of on 5. No big deal. If I have any excess clearance I can also drag the chainline back toward the center a little bit by shuffling bb spacers in different thicknesses.
Hope that helps. Best of luck!
Chainlines with XX1 are kind of the wild, wild, west. There are multiple possibilities and a lot of them work to varying degrees. The setup I have is on a frame with 135mm dropouts and a 68mm bb shell with a GXP bb and a 2.5mm spacer on each side with 440mm chainstay length. What works for you is really gonna depend on your individual frame geometry. If you look on SRAM's website they have frame fit specification PDFs that are pretty helpful.
One thing with XX1 and similar cranks that isn't always well understood or documented is chainring offset. My XX1 is using a spider mounted chainring. It's chainline is 49mm. If I were to switch to a direct mount, I would need to switch to a direct mount ring with a 6mm INWARD offset to make up for the width of the spider that won't be there if I want the same chainline. FWIW, I'm in the process of building up another of these frames and I'm wanting to use a bigger, 40t chainring. I don't have the chainstay clearance to do it with a 49mm chainline and a spider mounted ring, but by using a 0mm offset direct mount chainring I'll move my chainline out by 6mm and gain the clearance I need. That 6mm of outboard movement in my chainline won't be ideal, but it really only adds up to a gear and a half's width in the back, so my chain will be dead straight between 6 and 7 instead of on 5. No big deal. If I have any excess clearance I can also drag the chainline back toward the center a little bit by shuffling bb spacers in different thicknesses.
Hope that helps. Best of luck!
Joined
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117 Posts
I doubt everyone will have the same reasons as I do, but here's why I'm running an XX1 crank:
1)they can be found at good prices all over the place online.
2)they're one of the lighter cranks around
3)between direct mount with 3 different offsets and spider mount they offer a really wide variety of chainring sizing and chainline options. With a threaded GXP bb they offer even more chainline adjustability via shuffling bb shims.
4)multiple manufacturers offer aftermarket chainrings to fit SRAM direct or spider mount.
There's a lot of great stuff out there, but between the pricing and the wide range of possible fitments XX1 just seems like the way to go as far as I'm concerned.
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