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.

Doc
My C of G on the RV7 came out one American inch behind the  usual  O  360
position with CC mount,James Cowl and Tracy box. There is lots   to  cut off
the James Cowl, so you could position your engine further forward.

Ian.

Thanks Ian for the good news. Lighter is better.

Jerry Hey will be building the mount. You get this, Jerry?

Doc

Yes,I am looking forward to seeing how Paul handles the nose gear
socket.  I am sure he will come up with a good design. This will be
the first time for me to build an SBeam mount with the nose gear a
part of the mount. The nose gear structure should be a good place for
the rear strut.   Jerry


It will look exactly like this mount except the following
tubes will be kept.

The best way to do it and probably cheaper in the long run
and much more likely to fit perfectly is start with a Lyc
mount and cut way what you are not going to use.

-- 
Paul Lamar ...No rotor no motor.

I agree that would be easiest.    Jerry

-----------------------------------------
Here are some jpgs of the RV6A motor mount.
Not final yet. The beam is not shown. Bushings
too close together.

Paul Lamar ...No rotor no motor.

-----------------------------------------------
Here is the engine super imposed on the James cowl
side view.

Ian is this about what yours looks like?
-- 
Paul Lamar ...No rotor no motor.

Paul, check clearance between S-beam and muffler.  There may be
conflict with this particular  exhaust system.    Jerry


That may be one of only several problems with that cowl.
That is the wrong cowl for the RV9A. That is the RV8 cowl.
Things are different about the RV9A cowl if there is one
for the RV9A.

I have a message in to Will James to get a dwg on the RV9A cowl.