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Thread: New parts for Schwinn Johnny G pro.

  1. Default New parts for Schwinn Johnny G pro.

    I am very new to spin bike repair/maintenance. I am wondering about fixed gear crank sets and bottom brackets. I am wondering if I can upgrade the bottom bracket on my Johnny G. I am assuming it has the Shimano UN-54.(I haven't checked yet). Is it possible to move to a different brand of BB other than Shimano as long as it is 73mmx113mm?
    Also wondering if I can put on a better fixed gear crankset? I know it would have to fit under the chain cover.
    Any suggestions or insight is appreciated.


  2. Default

    Anyone have any thoughts on changing crank sets and BB from square taper to ISIS? Is it worth it?


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