Mark Waldron wrote:

John,
  Tracy  has a note on his web page concerning the potential benefit of the
exhaust diffuser in a NA application.  He noted that he started going
through mufflers at a fast rate when he changed to the housings without
diffusers, and cites Mazda reports that the exhaust impulse is considerably
greater without the diffuser.   He's not making any definite statements, but
the circumstantial evidence is woth considering.  Just a data point.

Mark W.

Very true Mark but he is close to solving this problem.
His current muffler set up seems to be holding up.

Paul Lamar
 
The AirCraft Rotary Engine NewsLetter.              Powered by Linux.

http://home.earthlink.net/~rotaryeng/            http://www.linux.org