Hi everyone!
Here my problem: When i push with a medium amount of force into the pedals there is something into the drivetrain that make an sudden huge sound (same sound as the chain when it jump) and let the crank arm spin almost freely for some very little degree.- When the bike is on the table , the chain seems to run normally whitout any jumps or other problems; (also the chain is kinda new).
- There are no bended tooth on the sprocket;
- Derailleur is working fine , with the correct align;
- Cable and cable holders are new;
I have no idea where to cheeck or what can be but since is the smallest cog that really piss me off (since i really use a lot this one).
Ps. This bike is an mtb with 9 speed deore.
thanks for help.