Bill Freeman wrote:

Steve,

After a brief look, it looks like some good ideas.  I would
suggest that the rear mounting plate (I estimate 1/4" or 3/8"
alum plate) is much too flexible.  You will need to add three
brace struts out to the end of the housing, attached directly
to the bolts (via appropriate brackets of course) which go into
the front case.   Glad to see a realistic output shaft design.
Not familiar with the tapered hub sprocket, looks interesting.
Friction is a pretty reliable force, can be great when harnessed
properly.

Bill

Funny you should mention that Bill. I just worked up a suggested change
for Steve's design. Not that he needs to change the one he built already.

I find it a brilliant use of off the shelf materials and parts.
I especially like the two pieces of aluminum tubing heat shrunk together for the 
housing. Brilliant idea. Those tapered roller bearings are canon proof.
I also like the idea of those AN eye bolts. I was racking my brain on how
to do that on my design. You are a very talented designer Steve.

Here is my suggested change.

Paul Lamar
 
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