Paul,  if the exhaust system works well in suppressing noise and

suppressing power, then I will supply them.  We should know soon.

The Mark(s) have one also so we will  see how it does with the p

port. Jerry

I left out the important word "not".  It should read suppressing  noise
and NOT suppressing power.     Jerry

I thought you may like to see the ehaust That I will be using on  my Cobra Arrow. I have heard it on the prototype and it is fairly  quiet. I have no idea how it effects performance. I would like  your comments if you have any.

Baz
What engine is it for?  Jerry

For the 13B. I'm only looking for 165 HP for the Cobra. Running a 2.8:1 PRSU
to a 3 blade in flight adjustable 70" prop.

Baz


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