Paul

Well once again I have been talked out of what I'm trying to do.
I just think at this point I'm just to impressionable to mess with
this motor right now. I have to take a step back here. I talked to
Tracy today and a few others about this motor and what I realized
was that I need to go back and define my mission, I really didn't
have one for my airplane. But I have to figure out what I want this
thing to do.  I know that I'll never be able to stick with any
decision I'm trying to make until I do that. I'll be gone for
a while now! maybe I can pick things back up later after I've
built the airplane a little more. I just have to think a little
more before I go boring holes in my housings.

Tony

What does the "mission" have to do with it?
There are no down sides to the P-port.

What ever you do don't use those after market apex seals
now or later. A glance at these pictures will tell you why.
http://www.rotaryeng.net/seals.html

Also can I have the name of that NC machine shop guy
that will bore holes for $75 each?


Paul Lamar

Tony,

At the risk of sounding pretentious, I happen to know how your feel.
Information and opinion overload. I applaud the fact you know when to step
back and take a breath.

Ultimately  your engine choice  depends on your resources, your airplane
platform, need or desire of horsepower, speed and maximum altitude you want
to fly at. Needs and desires are tricky to define, and marriage is a good
place to study those:)  And oh yea, another important factor,  your
willingness to be a researcher innovator.

If your airplane and flight use mission mirrors Tracy's then copying his
set-up is the safest and less energy (yours) intensive way to go. He has
done the innovation and has the flying hours to prove it.  Can his work be
improved on?  Of course and I'm sure Tracy would be the first to admit it.

If you need more power then Tracy, in the same size weight package, then
P-ports is one way to accomplish the goal. However gaining more power
creates the need to have more cooling ability as well. Now you are
innovating and innovation is 5% inspiration and 95% perspiration.  One case
in point.  Paul's slide throttle. It is now up to revision #12.  I'm sure
everyone  knows (at least I hope so) that there will be more revisions and
improvements once the unit is tested for ten or hundreds of hours on a
running engine at different altitudes.

This mailing list is really about some amazing people striving to create a
better engine for aircraft use. By sharing thoughts and ideas, success and
failures we are accomplishing the fact in a relatively short time with
limited resources. Hope to see you again here.

DougFir

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