Torque converters slip and convert HP into heat. Lossy.

There are torsional vibration dampers that are just high hysterisis
elastomers in a torque coupling that might help.

"Bob Chilcoat" wrote in message
...
Matt's response gives me an thought. Has anyone ever tried a torque
converter by itself as a PSRU? Seems like it might solve a number of
problems, be relatively light, and not subject to wear. Just a thought -
I'm sure there would be lots of new problems.

--
Bob (Chief Pilot, White Knuckle Airways)

"Matt Whiting" wrote in message
...
wrote:
snip
And flywheels? That is one advantage of automatic transmissions, the TC
damps the torsional vibrations from the engine and prevents them from
reaching the transmission and drivetrain. Most standard shift vehicles
have spring hub clutch disks to help cushion the drive train.

Matt