Paul, What is the durometer of the silicone sheet used in the TTC
       re-drive damper?............

       Kelly Troyer


   40,50.60 or 70 1/2 inch thick

   50 for one inch thick

   Mcmaster Carr


   For the coupling if you want it softer you can drill a hole in it.

   Paul Lamar

   Paul,
       Seriously considering replacing the rubber cushions in my RD2C
   damper which are
   1/2 inch thick..........Would like your opinion on what durometer of
   silicone to use.........

   Thanks,
     Kelly Troyer

   Thats is not going to help. Your damper adds too much rotational mass to the
   flex plate causing it to fail.

----------------------------------------------------------------------------------------

   Lets rehash some of the facts.

   Spinning a standard Lyc powered airplane  will permanently bend the steel
   prop flange with a metal prop.

   Going over a bump in the Everglades in an air boot will break a Cadillac
   crank shaft and that is less than 3000 RPM.

   The flex plate was never designed to transmit all torque from its
   outer radius while spinning at 6000 to 8000 RPM in a continuous
   turn.

   Doing  this is like racing an auto transmission RX8 on a quarter mile
   oval  race track at 100 MPH and 6000 to 8000 RPM.

   All the factors that make Tracy's coupling design a bad idea.
   He is a great asm programmer.


   Paul Lamar

   Paul,
     Will be using the same steel flywheel that Dave Leonard used to
   replace a failed stock 13B gen2 flex-plate.......

   Thanks,
   Kelly Troyer

   Is that an Exedy? What is the weight? What are you paying for it?
   The sock flex plate is 4.25 pounds. Tracy plate, nuts and volts is
   another 5.5 pounds. Some of those exedy flywheels are 12.5 pounds.

   Paul


Paul, what is your opinion on an aluminum flywheel disc with a starter ring pressed on to the perimeter. or  just made from 7000 series aluminum with starter teeth cut and hard anodized? shorter life but lighter?

james whitehurst

We used that on the TTC but it has a limited life.
I don't know exactly how many starts.
You will only save a few pounds. The stock steel flex
plate is only 4.2 pounds so you will only save maybe 2 pounds.

Paul Lamar


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