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sst45 Crankshaft

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  • sst45 Crankshaft

    The APBA rules for SST45 state "...The crankshaft for the SST45 was prepared for racing by hand grinding a radius on the top crankpin hole....When using a replacement production "fishing " crankshaft it is advisable to duplicate this feature."

    https://www.apba.org/sites/all/files/documents/SST%2045%20Reference%20Information022515.pdf

    My question is "is this what they mean by the top crankpin hole"?

  • #2

    Re: sst45 Crankshaft

    Yes. Grind the sharp edge of that hole.

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