Brent:


Re: Pressurization:

One trick, you can fill the cabin with big blocks of Styrofoam and
dramatically reduce the volume of air it takes to do the pressure test (your
200 gal shop air tank will last much longer) and
also reduce the available energy and the associated risk of injury in the
case of a structural blow out.


************ On another subject  ***************

We have been running a TIO-540AE2A (built up with 8.7:1 pistons) on the GAMI
test stand equipped with cylinder pressure transducers.

I'm curious as to how you run your engine.  I would like to duplicate that
on our test stand and record the cylinder combustion pressures.

If you don't mind,  what MP, fuel flow, & RPM do you normally use for
takeoff power?
Climb power?  Cruise?

We are investigating several issues with that engine configured in that way.

We are looking into torsional vibration and peak cylinder pressures.

Monty tells me you have had good luck with yours for several hundred hours,
now, so I would like to mesh your operating experience with the data we are
seeing.

I will be glad to give you a report back as to what we learn.  

Thanks,  George