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Old 04-08-14, 08:02 AM   #1
pino1biker
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Shimano ultegra 11 speed compact on 10 speed groupset

I have just installed an 11 speed ultegra crankset, the rest of the drivetrain is 10 speed - shifters, chain, cogsets and F,RD. As of now, the front shifting does not really work. It jumps of the chain rings when shifting. I am trying to trouble shoot what to do at this point. I was wondering if installing an 11 speed chaing will fix the issue or if it simply adjusting the FD will fix the issues. I have not seen a lot written on 11 speed 10 speed compatibility. Most things I read say the crankset should work fine. If anyone has any experience yet please let me know. Thanks.
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Old 04-08-14, 08:23 AM   #2
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If it's overshifting off the chainring, then it sounds like a simple limit screw adjustments is needed.
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Old 04-08-14, 09:01 AM   #3
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not sure why the limits would change/ I have used various cranks on this bike and usually never have to adjust the limits once they are set up right once.
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Old 04-08-14, 09:50 AM   #4
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Originally Posted by pino1biker View Post
not sure why the limits would change/ I have used various cranks on this bike and usually never have to adjust the limits once they are set up right once.
Apparently this time is an exception. Your symptoms certainly indicate the limit screw(s) need to be reset.
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Old 04-08-14, 10:16 AM   #5
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When Changing cranksets, I would expect the limits to change, if only a tiny bit. The distance of the crank to the frame (inboard-outboard) can vary.
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Old 04-08-14, 10:51 AM   #6
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I forgot to adjust the FD to accomadate a smaller chainring. Moved it down a touch, adjusted the limits and works perfectly with a 10speed chain and an 11 speed chain. Interestingly, the R crank arm is very close to the FD when in the big chainring on front and smallest cog on back. It is a trek OCLV carbon frame 2005. Clears but only by a few mm at best.
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