> George (down under) wrote:
     > > Paul and Jerry,
     > > There is an easy way to put fins in the  2' cool tube - if you put
     > them in
     > > before you weld the 2" tube into the 6" tube.
     > >
     > > Just drill some holes directly through the 2 " tube and weld in what
     > you
     > > want ( flat or round) - weld from the outside.
     > > You could probably leave them long, which would cause some swirling in
     > the
     > > inside of the 6" tube as well.

OK Guys, I read this whole thread through before responding so I wouldn't
miss anything. Jerry, The simple solution is to cone the small tube into the
larger one, a backward funnel, an ersatz defuser. The fin thing is way out
there...every time there is a new muffler idea everyone forgets how hot
these mufflers get. Every additional weld or joint is a possible failure point.
Leave the tube alone, as you obviously understand Jerry, from your last
re: posting. The tube and cone can be angled to help miss the S-beam.
Paul is correct about any blockage, let the air flow through. Angle the exit
into the airstream, and you might even pick up a little thrust. I have an idea
for my muffler Jerry, I want to go over with you. IF it looks doable I'll do a
3D and share with the group.

Paul, Do you still have the file with what we were calling the "P 51" style
motor mount? I want to see if that mount and a wide S-beam placement
will turn the trick for me. Thanks guys, keep plugging Jerry. I really want
to know how loud things are once you get it running.

Bill Jepson
WRJJRS (at) AOL.com

It will be similar to this Seawind layout except the firewall will be a bit
deeper so the lateral brace can go under the oil pan. Got a firewall drawing 
on that RV10 you can send?

Paul Lamar

 
The Rotary Engine NewsLetter.  Powered by Linux.
ACRE NL web site. http://home.earthlink.net/~rotaryeng/            
Copyright 1998-2004 All world wide rights reserved.