Good morning Paul
I am sending you the propeller shaft design and i would like to know if
Jeff can machine this shaft and how much.
I specified sae 4130 but you can recommend a better choice for shafting
and treatment.
I modified my housing design for a larger surface bearing at prop side
and also a better ring gear attachment with back plate and rivets plus
bolts.
The ring gear back plate is already machined .
With Alibre i can not convert for Rhino files but dwg can be open with
Solid Works eDrawing

Jean Prudhomme

Looks good Jean. Is it an exact copy of a Lycoming or Continental shaft?

If so that is good. Do you mean planet carrier back plate? If you
want a 2.85:1 gear box you will need to drive the planet carrier
and hold the ring gear stationary.

You will have to contact Jeff directly and see if he will do it.
If you are only making one or two you don't need an NC lathe.

jeff doddridge <4starr@cox.net>

Paul Lamar