Jerry, If I remember correctly, you were using a heavy wall tube for the
cooling tube - I think any crack would be where it is welded to the end
bells, not in the tube itself, but you can pressure test it easily. Buy a
bicycle tube, cut it apart opposite the Schrader valve, stretch each end
over the cooling tube ends and clamp down, inflate the tube thru the
Schrader valve. If it holds air overnight, should be ok. Cost a couple of
bucks, test on the airplane. I would have a CO tester in the airplane.
Herb Sanders

 > Bob,  the large exhaust opening is being eliminated.  However,   it

is

possible to inspect the cool tube, even to pressurize it  to check

for

leaks, if one wanted to do so.   The cabin heat thing was always an
afterthought. I like the idea but no one needs to follow my lead.  I
will put a temp probe on the cool tube to see how hot it gets.   If

it

stays below 1600º it will NEVER burn out.     Jerry

Jerry,
Considering the shape (of the exhaust pipe) you have settled on, and I

don't

know how far this will stick down from the cowl - you could play with

the

shape to make it more aerodynamic for less drag, seeing your working

with

flat plate.
Just a suggestion.
George (down under)

Herb Sanders wrote:

Jerry, If I remember correctly, you were using a heavy wall tube for the
cooling tube - I think any crack would be where it is welded to the end
bells, not in the tube itself, but you can pressure test it easily. Buy a
bicycle tube, cut it apart opposite the Schrader valve, stretch each end
over the cooling tube ends and clamp down, inflate the tube thru the
Schrader valve. If it holds air overnight, should be ok. Cost a couple of
bucks, test on the airplane. I would have a CO tester in the airplane.
Herb Sanders

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