I am trying to figure out if I missed something when converting my Santa Cruz Stigmata Rival mechanical build to a mullet drivetrain build.
XO AXS derailleur, GX 10-52 cassette, XO chain, Easton 12 speed chainring, Rival etap shifters. When I am in the 52 cog, the chain feels like it is grabbing hard on the chainring and almost wanting to fall off the inside towards the frame (noisier gear with what feels like more friction that goes away when I shift to the next highest gear).
Is this normal for those of you that have a mullet build? Wondering if it is mandatory to have Sram in the front (Force 1 chainring)?
Doesn't seem normal if the adjustments are right. Mine works fine, but ... my front is a 42T and Sram Force 1 crank. Is your crank a 1x? if not, that would account for the problem reaching the 52. Either way (1x, 2x), can you change the alignment to get the crank ring a little further inward? (just ideas, I don't know anything about the Easton cranks).
mike wrote:Doesn't seem normal if the adjustments are right. Mine works fine, but ... my front is a 42T and Sram Force 1 crank. Is your crank a 1x? if not, that would account for the problem reaching the 52. Either way (1x, 2x), can you change the alignment to get the crank ring a little further inward? (just ideas, I don't know anything about the Easton cranks).
Yeah.... I was thinking either wrong chainline or wrong chainring.... there are 3 different 12 speed standards. Make sure your front chainring is SRAM specific.
From the description, it seems like it should work fine. From the previous post, I am not sure how you "...change the alignment to get the crank ring a little further inward"?
mtbnut87 wrote:
Yeah.... I was thinking either wrong chainline or wrong chainring.... there are 3 different 12 speed standards. Make sure your front chainring is SRAM specific.
I've got no insight on why the chainring alignment might be different, other that it's a different manufacturer, possible slightly different specs. Some bottom brackets allow slight adjustment of the chainring alignment. I don't know what BB you are using. I don't even recall which ones do, but I know some do. I hope you find a fix, and I'm sorry I don't have more helpful info. Make sure and keep us posted on the outcome and good luck. 😉
I found a killer deal on a force one carbon crank. Went ahead and bought that to save myself the pain and time to figure out what the issue is. I can sell my Easton chain ring and crank and make some money back. All in, it’ll probably only cost me $100 to change to the Force 1 crank
mike wrote:I've got no insight on why the chainring alignment might be different, other that it's a different manufacturer, possible slightly different specs. Some bottom brackets allow slight adjustment of the chainring alignment. I don't know what BB you are using. I don't even recall which ones do, but I know some do. I hope you find a fix, and I'm sorry I don't have more helpful info. Make sure and keep us posted on the outcome and good luck.
I hope the Force 1x works out. I guess there's a possibility that the frame and/or rear D hanger are just slightly out of alignment and the reach to the 52 just exposed the problem. I hope that's not the case.
sacksyboy wrote:I am trying to figure out if I missed something when converting my Santa Cruz Stigmata Rival mechanical build to a mullet drivetrain build.
XO AXS derailleur, GX 10-52 cassette, XO chain, Easton 12 speed chainring, Rival etap shifters. When I am in the 52 cog, the chain feels like it is grabbing hard on the chainring and almost wanting to fall off the inside towards the frame (noisier gear with what feels like more friction that goes away when I shift to the next highest gear).
Is this normal for those of you that have a mullet build? Wondering if it is mandatory to have Sram in the front (Force 1 chainring)?
I just installed my mullet setup, and am having a similar problem on my Carbonda 696. GX 10-50t cassette, GX axs rear derailleur, EThirteen XCX Race Gravel cranks with 42T chainring, BSA 68 bottom bracket. Ethirteen says my chainline should be about 47mm (and it seems to measure that) which is the same stated chainline as your Easton cranks, and when in the 50T cog the chainring does not spin very smoothly and seems rough like the chain is grabbing on the chainring.
I've read elsewhere that a 47mm chainline is appropriate for this setup, but maybe it works better with a 45mm chainline of other road specific 1x cranks. Has anyone else had experience with this?
I just installed my mullet setup, and am having a similar problem on my Carbonda 696. GX 10-50t cassette, GX axs rear derailleur, EThirteen XCX Race Gravel cranks with 42T chainring, BSA 68 bottom bracket. Ethirteen says my chainline should be about 47mm (and it seems to measure that) which is the same stated chainline as your Easton cranks, and when in the 50T cog the chainring does not spin very smoothly and seems rough like the chain is grabbing on the chainring.
I've read elsewhere that a 47mm chainline is appropriate for this setup, but maybe it works better with a 45mm chainline of other road specific 1x cranks. Has anyone else had experience with this?
This is pretty typical for a 10-50 cassette with a short chain stay length and a relatively large chain ring. Using the X-Sync Eagle 2 chainring does a lot to eliminate the friction. The chain ring teeth are shaped in a way that you get a lot less friction in the extreme chain line positions. It also helps to go to a smaller chain ring, but that generally is not a great option. It will also get better as the chain ring teeth wear from all the friction.
This is pretty typical for a 10-50 cassette with a short chain stay length and a relatively large chain ring. Using the X-Sync Eagle 2 chainring does a lot to eliminate the friction. The chain ring teeth are shaped in a way that you get a lot less friction in the extreme chain line positions. It also helps to go to a smaller chain ring, but that generally is not a great option. It will also get better as the chain ring teeth wear from all the friction.
That makes sense. I suspected a SRAM x-sync chainring would be smoother than a 3rd party chairing, I bet that is contributing to it as well. I'm going to try out some other crank/chainring combos and see it it helps. Praxis Zayante Carbon looks like a good option too.
