Fred Osborn wrote:

Paul,

I understand that the rear journal e-shaft bearing is not suitable
for the side load imposed by a cog belt drive. For a single rotor
engine how about a needle bearing which would run between the
e-shaft and a reworked or redesigned rear synchronizing gear
replacement part. Could that arrangement provide an adequate
side load capability? Rotor sync would be maintained by the front
sync gear.

Fred Osborn

Ken Welter uses an outboard support bearing with simple oiler.
Needle bearings have severe RPM limitations. I would use a precision
ball bearing in that application.

Paul Lamar
 
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