Not Ranked
My primary experience with this problem is with the Accel version of the Mallory - a slip fit with 1/8 pin and it will shear with a HV pump, as I have demonstrated several times. Think they use slip fit to change bronze gears quickly in a race environment. Put in a 3/16 pin and roughed up the shaft a little to provide more stability - no problems on any of them. The MSD is a press fit and may not need the 3/16, but I plan to use it anyway. No shaft failure problems.
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