11t Sprocket Failure – Rotax Max F125

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    • January 1, 2014 at 12:58 pm #18748
      George Vorrilas
      Participant

      Are you using the correct outer washer and nut ?  We have seen a number of failures from using the wrong outer washer and nut which may interfere with the chain and sprocket.. I would suggest putting it together and taking a hard look at it to ensure that it is running clean, free of interference… rotate it by hand and I think you will see the problem. We have run 11t drivers with great success.

    • January 1, 2014 at 2:54 pm #18753
      Greg Welch
      Participant

      The nut is the same whether you use an 11 or a 12.

      When you run the 11 you remove the o-ring and switch to a smaller outer washer.  You can put a dab of grease on the bushing but they will always be a little noisier than the 12.

      Also, avoid cheap aftermarkets, never had a failure with OEM sprockets.

    • January 2, 2014 at 7:27 am #18792
      Peter Zambos
      Participant

      [quote quote=18753]Also, avoid cheap aftermarkets, never had a failure with OEM sprockets. [/quote]

      +1.  Used an aftermarket drive sprocket once.  Literally.

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