Paul,

Attached is a copy of the main parts of the drive I told you about.
Obviously, I would change it to accommodate typical parts from Ford C6.  The
original called for Corvair parts, which are still available, but the C6
parts would be much stronger.  I don't know if you can see it from the
portion of the drawing sent, but it uses a captured ring gear which would
provide the output to turn in the same direction as the input shaft.
However, documentation with the plans state that is turns in the opposite
direction.  The shaft is 1.33" at the thickest portion. (again from a
Corvair transmission)  The main portion shown, referred to as the nosecone,
is 6.5625" long with the rear portion of that part at 5.75".  The thinnest
wall is .3125" and is made from 2024-T3.  I might consider using FORTAL,
which exceeds 7075.  Using the Ford parts, the diameter
of the nosecone would probably have to be larger to accommodate the larger
shaft and bearings, etc.  I welcome your critque.  Thanks.

Dave Kuc

This looks pretty good. Is that flange a SAE #2 or SAE #1?  As I recall SAE #2 
is for wood props. I could have that backwards. If the flange is for wood props
the shaft ought to be fine for non aerobatics use. I am partial to tapered roller
bearings for prop shafts. Is that 1.33 inch diameter right at the front roller
bearing?

Paul Lamar
 
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