jumps up a gear under load sometimes Help.
08-09-22, 04:16 PM
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jumps up a gear under load sometimes Help.
I have an 1x11 drivetrain and for the most part it shifts smooth and quickly but sometimes when I am climbing and shift to a lower it will shift to the lower gear but immediately shift back to the higher gear. It sometimes does it when not shifting but just putting power under load like starting to climb without actually shifting down my bike will shift to a higher gear on its own. Does not do it all the time but enough it is bothersome. I have microshift bar end shifters deore rear derailleur. does not matter if clutch is off or on altho I have had it on most of the time. Again shifts find under normal riding. Is this something that is addressed via the barrel adjuster or at the derailleur itself? thanks. photo of what I have.
08-09-22, 04:22 PM
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Turn the barrel adjuster (either on the downtube cable stop or on the rear derailleur) about 1/2 turn counterclockwise. That should fix it.
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08-09-22, 04:38 PM
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Are you in the big front with this happens? Besides the above reply, it might be that your chain line isn't quite what it should be. However I'd only expect the chain line to be off if this was a bike that someone made 11 speed using a mix match of other components. Particularly the crankset. If the 11 speed is original to the bike, then chain line is likely adequate.
08-09-22, 04:45 PM
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Are you in the big front with this happens? Besides the above reply, it might be that your chain line isn't quite what it should be. However I'd only expect the chain line to be off if this was a bike that someone made 11 speed using a mix match of other components. Particularly the crankset. If the 11 speed is original to the bike, then chain line is likely adequate.
08-09-22, 04:55 PM
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Well get the bike up on a stand or someplace you can comfortably stand behind it and sight over the top of the rear cassette to the front ring. Try to find what cog on the rear looks like it has the chain perfectly straight with no bend left or right. If that is one of your middle three cogs then your chain line is likely good enough. And just forget my mentioning of chain line as that will just be searching for the wrong possible solution.
However if the chain doesn't look straight until you shift down to some of the smaller cogs with less teeth, then that might be something to think about if no other more likely solutions solve your problem.
I don't know if this means you built the bike or that it was originally built and sold as a 11 speed. No need to answer though. Just pointing out that it's sort of ambiguous to some of us... well at least me.
However if the chain doesn't look straight until you shift down to some of the smaller cogs with less teeth, then that might be something to think about if no other more likely solutions solve your problem.
and it was a new build
08-09-22, 05:03 PM
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Well get the bike up on a stand or someplace you can comfortably stand behind it and sight over the top of the rear cassette to the front ring. Try to find what cog on the rear looks like it has the chain perfectly straight with no bend left or right. If that is one of your middle three cogs then your chain line is likely good enough. And just forget my mentioning of chain line as that will just be searching for the wrong possible solution.
However if the chain doesn't look straight until you shift down to some of the smaller cogs with less teeth, then that might be something to think about if no other more likely solutions solve your problem.
I don't know if this means you built the bike or that it was originally built and sold as a 11 speed. No need to answer though. Just pointing out that it's sort of ambiguous to some of us... well at least me.
However if the chain doesn't look straight until you shift down to some of the smaller cogs with less teeth, then that might be something to think about if no other more likely solutions solve your problem.
I don't know if this means you built the bike or that it was originally built and sold as a 11 speed. No need to answer though. Just pointing out that it's sort of ambiguous to some of us... well at least me.
08-09-22, 05:37 PM
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The person you responded to said to turn the barrel adjuster either on the downtube or at the rear derailleur. Not sure why you ignored half of that post.
The barrel adjuster on the downtube is shown prominently in your first picture. As said earlier, a half-turn (counter-clockwise) should fix the problem.
The barrel adjuster on the downtube is shown prominently in your first picture. As said earlier, a half-turn (counter-clockwise) should fix the problem.
08-09-22, 05:40 PM
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08-09-22, 05:42 PM
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The person you responded to said to turn the barrel adjuster either on the downtube or at the rear derailleur. Not sure why you ignored half of that post.
The barrel adjuster on the downtube is shown prominently in your first picture. As said earlier, a half-turn (counter-clockwise) should fix the problem.
The barrel adjuster on the downtube is shown prominently in your first picture. As said earlier, a half-turn (counter-clockwise) should fix the problem.
in my original post I thought I mentioned the barrel adjuster I guess i need to be more clear sorry lol
Last edited by jadmt; 08-09-22 at 05:46 PM.
