Good afternoon Paul

 There is my revised design i tend to use Tracy prop shaft
  who as been tested for several hours, i know i will have some
 weight but for the first test i will go this way and then i can
 redesign or improve after testing for several hours and
 different rpm.

 The main trust line can be located inside of spool bolts surface
 and back plate, the way i locate it will be hard to install it.

 The second trust bearing between prop shaft and spool can be
 omitted and use the bushing only what you think

 The back plate will be perforated at 4 points to received the
 rubber bushings mount and each side of front part with 4 gussets
 and 2 of them will have 2 rubber bushing mount
 I know you are in favor of carbon fiber tubing but at this speed
 we need a good lubrication bearing with oil circulation and
 cooling and carbon fiber resin are not good friend with oil.


 I will draw on drawing board on my return to USA.

 If someone have comments about this design they are free to let me know.


Jean Prudhomme

Tracy says his output shaft is not suitable for a 50 pound constant
speed prop. I agree.

Are you still placing the engines nose to nose in the tail?
The fuselage will have to be 80 inches wide.

Paul Lamar


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