Flywheels from 20B and 13B Cosmo don't fit Tracy's redrive, and you

can not

replace them with other 13B flywheels. I have tried.
Bulent

My 20B is equipped with a 2nd gen flywheel.   Fits just fine.  Maybe I
don't
understand the problem.

Tracy  (finally got electricity back)

The problem is that I wanted to use the original starter. It straddles the
engine block and the bellhousing. So I could not use the 2nd gen flywheel.
The bellhousing gave me 3" "free" prop extension.
Bulent

Did you also make a new longer input shaft for Tracy's PSRU Bulent?

Paul Lamar

Tracy made it for me to fit my new dimensions.
Bulent

Sounds like a good solution to moving the prop back on a pusher.
Structurally better than bolting on a prop shaft extension.

What do you charge for a longer shaft Tracy?

BTW a stock bell housing may not be designed for prop gyro loads
but they do take a beating in a car application. The rear motor
mount is under the end of the transmission so the bell housing is
designed to take a considerable bending load when the car hits a 
severe bump. 

Not only that they are high pressure die cast therefor they have 
much better strength psi wise than a sand casting. They are also 
much lighter in the bargain as the wall thickness can be as low 
as 2 mm or .090".

For a tractor installation use of a stock bell housing  generally
would make the engine assembly too long for most stock cowls.

Paul Lamar 
 
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