Mike Wills wrote:

  One of those decisions is my plan to mount the muffler under the rad. I
couldnt see a way to make it fit along side the engine as you recommended
without resorting to either a small restrictive muffler, no muffler at all,
or an ugly bulge on the side of the cowl. Also Im still toying with the
idea of using augmentor tubes to help get the exit air out of the cowl,
particularly during ground ops, and this also dictates an under the
airplane exhaust exit.

Mike Wills

Here is a picture of the new PowerSport engine taken at OSH.
The muffler is a little overkill as EAA did not like the noise
in the pit area. Despite the size of the muffler they stopped
PowerSport from running the engine. 

Now if we could only get the EAA announcer 
to stop screaming over the OSH PA system all the time..:-)

Bill, Perry & Pine. Note the flap on the prop upper blade.

Paul Lamar
 
The Aircraft Rotary Engine Newsletter.              Powered by Linux.

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