Jerry,

I just talked to Ken at Vans. Stonewall. Call back next Monday. I  don't
have access to those drawings. The rotary has too many problems. Just
get the mount from us and match drill it to the firewall. etc., etc.,
etc. The one thing that he did say was that he thought the exact
location wasn't too critical. 'If you get it within 1/4" it will
probably be all right.' This from an "engineer!"

Rats. <other expletives deleted>

I notice that Conversion Concepts offsets the engine 1 degree. To the
right for the RWS RD-1C 2.85 redrive. But that doesn't help much.

Where do we go from here?

Doc

No problem Doc we got it. If you have the cowl measure the lenght
of it to the prop flange hole from the back while
it is sitting on the floor pointing up. Most are 39 inches.

Paul Lamar ...No rotor no motor.

Don't have the cowl yet. Should I order it now? Conversion Concepts  says to
order the O-320 as it is longer than the O-360; but this is kind of  moot as
Vans doesn't approve of the O-360 in the 9. What do you think of  the James
cowl? All I have heard is that it is superior aerodynamically and  results in
~ 7 kt. speed improvement.

Doc

The James cowl is good. Better for the rotary.
We will need the length. I might have it. I'll look
around. Yep I have it. It is 37 inches long.

Paul Lamar ...No rotor no motor.

Most cowls are designed to be moved forward or back by trimming at
the firewall end.  Find out from James how much leeway you have or
can have.  Maybe he can ship the cowl  with a longer skirt if you
request it.  Anyway, I have never had a problem matching the prop
flange distance of an 0-320.  Often the prop flange can be moved
further from the firewall in a rotary installation as the rotary
usually comes in lighter.  Having SPACE between the engine and the
firewall is very useful and should not be given up lightly.
Personally, I would get the engine as far away from the firewall as
possible.   The minimum distance from prop flange to firewall is
36.75 inches. 38 to 40 inches is typical.   Jerry

It is also easy to add a strip of material.
Here are some more shots of the James cowl.

Paul Lamar

The Rotary Engine NewsLetter. Powered by Linux.
ACRE NL web site. http://www.rotaryeng.net
Copyright 1998-2006 All world wide rights reserved.