Any ideas on what the culprit is?
Thanks
Pedaling backwards causes this issue
byu/workhorse_crusader inbikewrench
by workhorse_crusader
Any ideas on what the culprit is?
Thanks
Pedaling backwards causes this issue
byu/workhorse_crusader inbikewrench
by workhorse_crusader
12 Comments
We need a video from the back sprocket as well its easier to diagnose
Take off the back wheel and check the resistance of your cassette/free hub and derailleur pulleys. One of those things is sticking and needs a good clean & lube or replacement.
Closeup of chainring please. I had some similar problems when it was worn and the teeth had become concave.
Reckon your freehub is gummed up. Clean the pawls and/or ratchets and apply some light lube and you’ll probably be fine. There’s a chance that the bearing inside the freehub is seized and if that’s the case, a bike shop can replace it.
I had something similar on an orbea laufey. If you take off the back wheel and check if the derailleur hanger is a little loose. In my case there was a screw that holds the hanger in place. This screw was slightly loose and was pressing up against the cassette when the rear axle was tightened.
Your issue is definitely coming from around the cassette/derailleur. Check that all the jockey wheels are running smoothly and that you cassette can spin backwards without any resistance.
Maybe show the entire drivetrain in the video
[drivetrain ](https://www.reddit.com/u/workhorse_crusader/s/Oz3UJX950j)
It’s also possible that the derailleur is out of adjustment. Even if the shifts are clean, a mm or so in either direction can put things out of line enough to drag the chain. Just dealt with this on the roadie I have on my trainer.
I bet you’re missing the spacer that goes behind your freehub
Check your brakes. Spin the wheel by hand. Is there any resistance?
Check your derailler pulley, one must be stuck or have a lot of resistance.
I would disassemble the hub and clean and regrease the pauls or ratchet. That’s the best place to start.