So I recently just took off both cranks, casseste, rear derailleur for a good old clean, however when I managed to put everything back I get this grinding noise when I turn the cranks with a fair amount of power. I also installed a new chain in the video, however while the old one was being cleaned i also tried another chain thats the exact same as the old one witch resulted in same issue.
Before people ask the chain is the right type and I dont belive the sound comes from contact between chain and front derailleur, however I could be wrong.
Any more details required just let me know.
by kenkaneki911
2 Comments
Replace the front and rear sprockets and rear derailleur pulleys.
Is the bottom bracket bearing loose, allowing the chainrings to wobble a tiny bit as you turn them? (That can cause the chain to touch the derailleur cage.)
Does the crank turn smoothly without a chain on it? What changes if you fiddle with the shift levers a bit? How does it sound if you shift it down to the middle chain ring or smallest one?