X-Mozilla-Keys:                                                                                 
Paul Yaw wrote:

snip

most

tranny problems are due to overexuberance, or solid motor and tranny
mounts. (Solid mounts and gear banging always seem to go together for
some reason.)  They even last fairly well at the drag strip IF you run
slicks which absorb a lot of the shock loads during upshifts.

PY

That sure brings up food for thought on the motor mounts.
With the prop on there being an immovable object in terms
of rotational inertia the motor mounts have a lot to
due with how the PSRU is going to hold up.

Paul Lamar

In "Rotary Engine" by Yamamoto they have a chart showing stationary gear
load vs rpm.  They compare the loads between a manual and automatic
transmission.  The automatic is much nicer to the gears.  Again, I don't
know how this compares with a prop hanging off the engine, but solid
motor mounts, and tranny mounts practically guarantee tranny failure
within a season, even with a 135 horsepower ITA engine.  I always wonder
how this affects the stationary gears.  I suppose if the stationary
gears are affected, the psru could be as well.  You may be on to
something here Paul L.

PY

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