jumps up a gear under load sometimes Help.
#1
Senior Member
Thread Starter
Join Date: Mar 2022
Location: Missoula MT
Posts: 1,767
Bikes: Handsome xoxo, Serotta atx, Canyon Endurace CF8
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 904 Post(s)
Liked 1,897 Times
in
849 Posts
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.
#2
Senior Member
Join Date: Aug 2005
Location: Pittsburgh, PA
Posts: 33,656
Bikes: '96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '20 Surly Midnight Special, All are 3x10. It is hilly around here!
Mentioned: 39 Post(s)
Tagged: 0 Thread(s)
Quoted: 2026 Post(s)
Likes: 0
Liked 1,096 Times
in
742 Posts
Turn the barrel adjuster (either on the downtube cable stop or on the rear derailleur) about 1/2 turn counterclockwise. That should fix it.
Likes For HillRider:
#3
I'm good to go!
Join Date: Jul 2017
Location: Mississippi
Posts: 14,992
Bikes: Tarmac Disc Comp Di2 - 2020
Mentioned: 51 Post(s)
Tagged: 0 Thread(s)
Quoted: 6195 Post(s)
Liked 4,810 Times
in
3,318 Posts
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.
#4
Senior Member
Thread Starter
Join Date: Mar 2022
Location: Missoula MT
Posts: 1,767
Bikes: Handsome xoxo, Serotta atx, Canyon Endurace CF8
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 904 Post(s)
Liked 1,897 Times
in
849 Posts
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.
#5
I'm good to go!
Join Date: Jul 2017
Location: Mississippi
Posts: 14,992
Bikes: Tarmac Disc Comp Di2 - 2020
Mentioned: 51 Post(s)
Tagged: 0 Thread(s)
Quoted: 6195 Post(s)
Liked 4,810 Times
in
3,318 Posts
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
#7
Senior Member
Thread Starter
Join Date: Mar 2022
Location: Missoula MT
Posts: 1,767
Bikes: Handsome xoxo, Serotta atx, Canyon Endurace CF8
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 904 Post(s)
Liked 1,897 Times
in
849 Posts
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.
#8
Senior Member
Join Date: Jan 2005
Location: Baltimore, MD
Posts: 5,374
Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
Quoted: 2483 Post(s)
Liked 2,955 Times
in
1,678 Posts
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.
#9
Senior Member
Join Date: Feb 2016
Location: SE Wisconsin
Posts: 1,851
Bikes: Lemond '01 Maillot Jaune, Lemond '02 Victoire, Lemond '03 Poprad, Lemond '03 Wayzata DB conv(Poprad), '79 AcerMex Windsor Carrera Professional(pur new), '88 GT Tequesta(pur new), '01 Bianchi Grizzly, 1993 Trek 970 DB conv, Trek 8900 DB conv
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 759 Post(s)
Likes: 0
Liked 810 Times
in
471 Posts
#10
Senior Member
Thread Starter
Join Date: Mar 2022
Location: Missoula MT
Posts: 1,767
Bikes: Handsome xoxo, Serotta atx, Canyon Endurace CF8
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 904 Post(s)
Liked 1,897 Times
in
849 Posts
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.
Last edited by jadmt; 08-09-22 at 05:46 PM.