12 d

I am making a new coupling for my RV4.

 This is using Tracy one inch input shaft and the Ford powdered metal
 female spline plate.

 It took more time getting the rivets out than machining down the
 plate for a 1.5 inch pilot in the blue rubber bushing drum :-)

 There is some unnecessary hub material beyond the end of the spline
 which I removed to save a bit of weight.

 It is far easier to balance this than Tracy configuration as all the
 mass is on a smaller radius.

 It greatly decreases the polar moment of inertia and the stress on
 the flex plate. A few laps at Reno destroyed Dave Leonard's flex
 plate.

 Jean is working on a similar design. He could make them for you if he
 wanted  to :-) I am getting too old to work :-)

 Paul Lamar

 ----

I want one too!!  I already have a cut down spline plate from Paul.

Scott Gettings


OK Jean here are a couple of customers in Florida.

The cost would be lower if Jean sold a kit.
No nuts and bolts.
Some drilling and taping on your part.

Extract the Ford plate from Tracy's coupling and send it to him for
machining.

Paul Lamar

Hi Paul,
   Sorry to be pedantic, but the act of cutting a thread in a hole is
TAPPING not taping, which is wrapping something with tape.
   Chris Hoskins in NZ


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