From the Recreational Flyer,
Recreational Aircraft Association Canada,
The voice of Canadian Amateur Aircraft Builders.

See also the G.A.P. unit at www.gappsru.com

Yvon.

Yvon,

Marcotte has been around for years. They use the internal ring gear style similar to Powersport's. Marcotte uses a helical cut gear for increased tooth contact. They have also started providing an oil port for a constant speed prop. You must provide an externally driven prop governor.

 

Bill Jepson