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Discussion Starter · #1 ·
Hey ya'll

I'm getting a weird click while I pedal, and I think it's about time to replace my bottom bracket.

I've got a single speed RPM crank, and I know that when getting new BB, they need to be adaptable to the crank set. How would I know what's compatible and what's not?

this is what she looks like. http://ecx.images-amazon.com/images/I/11LLpkDYL7L._SL500_AA300_.jpg

Square tapered.

Thanks!
 

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As Merlincustom mentioned you may want to check a few things to ensure you are indeed replacing the correct/worn part?

Depending on wear and tear and related life/age of parts/fittings the drivetrain noise could come from a worn and damaged chain, check links for cracking and measure chain wear as explained here
http://forums.veloreviews.com/viewtopic.php?f=90&t=970

I always check the chain ring bolts first for tension as when they are loose or very dry they will creak, don't ask me how I know about that one, except to say I basically stripped and rebuilt a bike before isolating the noise to the damn chain ring bolts :eek:
You might also want to check your pedals are greased on the threads and tightened firmly. Check the bottom bracket is spinning free and with no sideways freeplay by dropping the front gears to the small chain ring, then remove the chain from off the small chain ring and if possible let it rest on the bottom bracket shell, then you should be able to turn the cranks with no restriction from the chain, this isolates any noise and if the bottom bracket is indeed shot you should feel a firm or very rough bearing.
The cups of the bottom bracket could be loose in the frame which will cause them to creak under load. You would need to remove the crankset to check the bottom bracket cups are tight.

Another area noise can come from and sound like your cranks is from the removable rear derailleur hanger/tip mount. If the rear hanger/tip is loose or very dry where it mounts to the frame, clean, grease and re-tighten to the frame.

While you are there make sure the cassette is tight on the rear wheel hub as they will creak and moan if not tightened enough.

That should keep you busy for a while and I hope it helps you find the problem :)
Good luck
Shane
 

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Knocking /clicking

If you read my post in this category you may find your problem. I was surprised to find out what or how simple a problem can be.
I remounted my rear wheel and noise went away
Paul
 
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