identify rb crankshaft

Thread in 'Technical Questions' started by driftinacossie, May 2, 2020.

  1. driftinacossie

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    Is there any way to identify which rb crankshaft I have? Do rb25 and rb26 have different markings?

    Are 25 and 26 different lengths? Rb26 long nose?

    Numbers stamped on mine are as follows:

    3683
    CCCBCBB
    010000

    Also casing mark of

    O5U

    Thanks
     
    #1 driftinacossie, May 2, 2020
    Last edited: May 2, 2020
  2. e30h26

    e30h26 Active Member

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    05U is RB26.

    Long nose cranks can be RB26, or possibly Neo RB25, but I've never seen the Neo RB25 theory confirmed. If you have 05U and a long nose, then definitely RB26.
     
  3. driftinacossie

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    Thats great, thanks. Can I ask where you got the information from?
     

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