Shifting is not very good right now either if that context is helpful – is this more than just cable tension?
What is causing the chain to run against the second cog?
byu/agingsculler inbikewrench
by agingsculler
Shifting is not very good right now either if that context is helpful – is this more than just cable tension?
What is causing the chain to run against the second cog?
byu/agingsculler inbikewrench
by agingsculler
13 Comments
1x or 2x?
Besides the drivetrain being dirty, micro adjust the rear derailleur.
Tension, turn your barrel adjuster a quarter turn a time if it gets worse go the other way.
I feel like we need to see the view looking forward from behind the cassette. with the upper derailleur cog in view.
But I second the micro adjustment on the barrel. First I would check out the H limit screw on the derailleur
https://preview.redd.it/28exjuaduvve1.png?width=806&format=png&auto=webp&s=70962f7b58a3c11f7c2dd1a1b7d87f844ad31ae7
The rear derailleur has nothing to do with this. Maybe a worn out chain and cassette.
This might just be solved with a YouTube video by Park-tool on derailleur adjustments.
Id recommend watching it as it’s very helpful for these issues.
I see this on 1* brand new bikes, it seems “”normal”” but I wouldn’t accept it.
!remindme 1 week
looks like chainline issue?
The “chainline” between the cassette and chainring is what would cause this. It’s not something you can really change on multispeed bikes but is really important for single speed bikes. Bikes are designed with this in mind and wouldn’t necessarily affect the shifting much.
Looks like 1x/chainline issue.
The ideal way to fix it is to convert to 2x. But that’s probably not worth the money.
For that gear the chain should be on the big chainring at the front. The chain will do this when you rotate the wheel backwards, due to the angle of the chain between the chainrings and sprockets. Use smaller sprockets on the big chainring and big sprockets on the smaller chainring.
if this is 1×11 as OP mentioned in another reply, this is to be expected on 1x setup. the extreme low n high gear may have a lil rub due to chainline n chainstay lenght.
i dont speak for overall 1x bike use case, but for us TT/Tri riders on 1x, we will size the cassette n chainring selection where we choose the middle cogs matching our ave cruising speed where we spend most of our time (for my case, i use 1x54T with 11-36 12sp with 14-17 are my usual cruising cogs).
the extreeme end gears are rarely used
What you are seeing in the video is due to chainline and is probably not the cause of shifting issues. As others have mentioned derailleur adjustment is probably how you need to address shifting issues but know that even when you get it dialed your chain will still look this from this angle.