Paul,

Still assuming I will be testing the turbo-compound idea I've got some rough
drawings done on how to directly bolt and sandwich a  multi-rib pulley,
between the  engine counter weight and aluminum starter gear flywheel.  The
vibrational dampers and steel plate to catch the sun gear shaft would then
attached to the Al. starter gear flywheel.  Usually a clutch plate is
attached to it and the unit mounted on racing engines.


Looking at this configuration and thinking of Tracy's unit, both would have
to be mass balanced in and of themselves or they would throw the engine out
of balance right?  That means all bolts, rubber donuts pulleys, spacers etc.
have to go in their exact positions.

For your info Dave Garber bolted up the Bell 47  3:1 gearbox directly to the
engine counter weight with no vibrational dampening at all.


Doug Fir

Yes but those are monster gears. He never flew it for very long either.

Paul Lamar ...No rotor no motor.

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