I have been reading about a psru developed for the R1200 bmw
motorcycle engine that is used in aircraft tractor and trike
pusher configuration. It uses a centrifugal clutch like ones in
most chainsaws only much larger, this has solved the torsional
dampening problem. The engines are rated 100-115hp continuous 6300
rpm. The clutch eengauges at 1800 - 2000 rpm and has to be changed
every 400 hrs. These engines have run 2000 hrs in this
configuration. They initially had flywheel cracks when they used
light ones, beefed them up cracks stopped engine ran smoother.

Has anyone considered the rubber coupling used to couple a high hp.
electric motor to air compressors and pumps ect. If i understand
there operation correctly they will absorb energy transmitted back
to the motor and shaft miss alignment between motor and equipment.
I have seen these couplings with several thousand hrs. on them with
no visible wear. Steve Hudson

How high is the HP?

Paul Lamar

I have used these couplings and have 10's of hours on the ground with
good results.

chris smale

Do you have a dwg? It must fit in a cylinder six inches in dia. and 1.7 inches long.
If it is only rubber the failure would be catastrophic.

If the rubber fails in mine it only increases the back lash. The final is metal to metal.

Paul Lamar

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