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Thread: BB question

  1. #1
    mtbr member
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    BB question

    I think my BB may be going out on my 08 Jamis Komodo 1. I have some poping and creeking that I can feel in the pedals when I am in the power stroke. At first I could only feel it when I was about 45 degrees past TDC but now I am feeling it a little earlier and also at the bottom of the stroke. At the same time I do not have any play in my cranks no matter what way or how hard I try to twist and pull on them.

    That being said, if it is my BB, I am looking for a suitable replacement. I was thinking of the Shimano UN55. I am currently running the stock TH Powerdrive, sealed
    cartridge, 73 x 113, from FSA. Any thoughts?

    While trying to look up some reviews on the UN55 I came across a old forum discussing ISIS, square tapered, BBs. It basically said that while they have thier place they are not very strong unless you shell out some big bucks for the high quality stuff. Well, I don' thave big bucks. Should I change out my BB to a different style all together? One that is more modern and stought? If so what crank and BB combo do you recommend?


    Edit: Just realized the UN55 won't work as my crankset is not a square taper. It is the splined one. Is that the ISIS spindle?

  2. #2
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    Also check your pedal bearings to see if they're worn or dry.
    Use it, use it, use it while you still have it.

  3. #3
    CSC
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    Raceface, SRAM, Shimano (upper end)...the list is quite long. I have been looking at Raceface, and their stuff seems top notch. I'd look at what they have, and see if you have the cash for it. SRAM would be my next suggestion, and Shimano would be my last, since I have had trouble with multiple BB systems from them. Good luck!

  4. #4
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    could it be pivot points or are you running a hard tail?

  5. #5
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    I am running a hardtail. I took the pedals apart and it turns out they are the problem. Not enough grease from factory and my left pedal's races are gouged. I am looking at the Wellgo B54s as the replacement. I like the way they look an the fact that there are two traction pegs near where the ball of my feet will be.

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