Mark Wrathall wrote:

Mark wrote:
The Motor glider engines are in the fuselage with a long rubber belt drive
to the prop on a retractable arm. Torsional vibration wouldn't be an issue
here.

Mark Wrathall

No I did not. It did not occur to me but that is a very good
point with anything other than a robust direct drive prop.

As I recall these one rotor engines include a large rubber
coupling and a gear box.

Paul Lamar

david mccandless wrote:

ACRE wrote: They are also the distant second largest wankel engine

builder with over

400 single rotor engines shipped for motor glider use.

**** Hi Paul, did you ,per chance, mention the torsional vibration issue

with single

rotor engines with Chris G? And if so,how has Diamond dealt with the

problem in motor

gliders? Single rotor engines are running here in Australia in race

cars, but of

course racers do not feel vibs as long as they get performance! BR, Dave

McC

 
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