How many people on here have Tracy's EM2 system to go along whith their ECx
system?

Paul Lamar

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Paul,
           I do, I have all Tracy's gear, and am extremely interested in
your drive update as I am already nervous after Dave's experience and I
haven't flown yet.  How many hours did Dave's flex plate last?  Neil

Probably several hundred hours but Dave puts it through hell.
I think he went through a couple of turbo chargers in the process.

I think Joe Berki's idea of reinforcing the flex plate with glass
fiber is a good idea. plug the large holes with some .065" thick sheet metal
and smooth the tig welds on the inside with a die grinder. Then sand blast
the inner part of the cone and lay up about 10 layers of glass
cloth just in the cone part. The glass fiber will damp some unwanted
vibrations. The inner steel clamp plate will lock in the fiber glass
laminate. Get some high temperature epoxy if possible. 250 F or better.

Another approach is just weld in some .065 steel sheet metal doubler.
If you have a 20 ton hydraulic press you could use a concrete mold
and press out a new steel  doubler cone. You can static balance the whole
works between knife edges as it does not require dynamic balance
because it is a symmetrical shape.

Down the road I intend building the new damper design and testing
it with a p-port but that could take a year.

Paul Lamar
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