A friend who is a machinist and has access to a machine shop is wanting
to put a single rotor in a 2-22 glider to make it a motor glider. I did
not encourage him, as I seem to recall the power to weight ratio is not
as favorable for the single rotor as for the two. That did not seem to
turn him off.

Does anybody sell a single rotor engine? I recall that there was a
considerable discussion on the list re making parts. What remains to be
done to make a complete set of parts for a single rotor engine? Does
anybody sell parts to build one up? If not, are there shop plans or even
conceptual designs available?

Doc Custer
Retired Software Engineer and sometime Audiologist

No reliable source that I know of yet Doc.
Richard Sohn is the closest to having a practical one rotor.
Richard is working on alloy end housings to  cut the weight.

If your friend has a machine shop in theory he could build
his own. Other than the e-shaft, which many have cut down from
a 13B shaft, the counter weights are the main problem.
Also the engine has a huge torque pulse once per rev.

Paul Lamar ...No rotor no motor.

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