Gary Casey wrote:

I would recommend NOT using any key at all on a taper.  The only reason a key needs
to be used on a Mazda output shaft is to index the flywheel, which incorporates a
counter-weight.  If a self-locking angle is used (I forgot what the "magic" angle
is) the taper will easily handle the torque, including the torsional vibrations,
and will be much cheaper and easier to make.  Rotational alignment is not necessary
for a PSRU.  A puller will be necessary for removal, a very minor inconvenience.

Gary Casey

Thanks again Gary. I suspect you are just the person we are looking for.
I guess we can  prevent the shaft from rotating when the nut is tightened
by locking the ring gear somehow.

Paul Lamar
 
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