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BB? 1999 Schwinn moab
i believe i need to change my BB, when i pedal on a hill or pedal with power i hear a creaking sound. ive checked my handle bars, pedals as recomended in another thread.

does any one know a suitable replacement BB?

i also want to replace 1 ring( the biggest one) on the chain ring.. should i ? or should i just replace the whole crank set?

i would like to have a bigger gear when i put the fD to "3"

would i need to replace my chain as well?


can any one tell me about this bike. i havent found much about it online.

just know its and aluminum frame and has 24 gears.
1999 Schwinn moab
on the back of the crank arm there is a model number it should like "fc-m590". what does yours read?. then spec the crank model for the proper Bottom bracket. You may have a hollowtechII type. as far as putting a bigger outer chainring you will need the Bcd of the ring. then shop for a ring, most do not change to much bigger rings on mega9 type drivetrains. what they are is what they are. I would only recommend a 2 tooth difference for the most normal setup and performance. Need to know exactly what we are dealing with first
There are two kinds of people in the world, "Those who help themselves to people, and those who help people!"
In addition to PK's information:

Chain - yes you will need a longer one.
FD - may or may not be able to accept larger chain rings.

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