Originally Posted by
THSdrummer
Hello all.
I've noticed my bike has started making the sound of chain rub, despite there being no chain rub. To illustrate my point, I shot a quick video of me in a range of gears while in the big ring. I know it's not the best, I just wanted to try and capture the sound.
Is this a BB problem?
http://www.youtube.com/watch?v=a2Jb-T0O270
I appreciate it if you took the time to listen for a bit and respond! I just want my bike to last. It was an investment.
It's something to do with your rear wheel - the give away is that the frequency of the knocking sound increases as you move up the cassette - i.e. it tracks speed - and it doesn't seem to track cadence which it should do if it was a BB issue.
Do you still have the dork disk? Is your wheel out of true rubbing something? Does that noise continue if you coast?