----- Original Message -----
Sent: Thursday, June 30, 2005 7:27
PM
Subject: [FlyRotary] Re: P Ports working
on dyno
As I recall the old email's on the subject, I
think the center tube was in place, but they removed the rear tube because of
test stand interference. That destroyed the venturi effect (or at least
minimized it) . someone else then took the muffler (Jerry Bass?) and adapted
it to his engine, he found that at slow speed taxi, that some exhaust came out
of the front of the tube. (as I recall)
Bill Schertz
KIS Cruiser # 4045
----- Original Message -----
Sent: Thursday, June 30, 2005 2:52
PM
Subject: [FlyRotary] Re: P Ports
working on dyno
Bill, I did get the jpeg and I really like the concept. I never saw the
original VAM. Ed told me about how it was chopped up to fit Tracy's test
engine. I asked what was inside it and he said "nothing." Originally
I can recall some discussion on the other list about putting a valve on the
inlet to prevent exhaust gas from going the wrong way when the airplane was
not moving. That probably came from a misunderstanding of your concept. I
really like the version you posted today. Jerry
Jerry,
It is interesting how you find out about things after the fact.
(ED if your monitoring please let me know if our info is correct) The entire
idea of the VAM concept was to create a venturi to draw the cool air in! The
reason for the donut fron section was it doubled as an end cap and an inlet
bellmouth for the tube. Without the inside tube I am supprised the thing
would draw air at all! I'll send you a close up drawing I sent PL's list off
line. When you get your engine running it could be worth a re-try. I am
supprised Ed missed the center tube, (if he did), he is a sharp guy and
doesn't miss much. The other possibility is that he made it removable and
they took it out prior to the test.
Bill Jepson