Paul,

Just one quick question...Do you have any info/source on the loss of
HP, efficiency/economy, etc. associated with the back pressure offered
by turbines (or catalytic converters, mufflers etc.)?

I know there has to be a plethora of info out there on it, I just
don't want to speculate anymore, and I'm not sure where to look.

Michael
No I don't. I wish I did. It is a complex problem
as the rotor is moving while the exhaust port is open
this changes the mechanical advantage on the e-shaft.
Also simultaneously the pressure is changing. Some one
would have to write a computer program to analyze the
problem. Many measurements would have to be made to profile
the instantaneous pressure over the period of time the exhaust
port is open. The pressure profile would then depend
on the configuration of the exhaust system.

Here is all I have. It is the shape of the exhaust pulse.

The best way is to merely measure the HP out as you
change the exhaust system. A high speed capture of the
instantaneous exhaust pressure would help.


Paul Lamar ...No rotor no motor.

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