Paul,

  I recently obtained a Renesis engine by going to Bruce Torringtin's
  shop in
  North Carolina and would like to install it on my highly
 modified Variezy
  which I am building. I have Tracy's B model PSRU and recently
 have become
  familiar with your web site.  I noticed Gregg's mounting/adapter
 plate  and
  have down loaded your instructions on designing a mount. Before
 I do very
  much I was wondering if you have already designed one for a Variezy.

  Rolland LaPelle

  We have something similar. I will change it to fit but
  I need the exact dimensions on the firewall hard points
  and the position of the thrust line relative to the
  mount points. Can you scan the firewall dwgs and email
  them to me? If you don't have a scanner you can zerox them
  and mail that to me.

  What kind of intake do you plan to use?

  Paul Lamar

 Rolland LaPelle wrote:
  I found the drawings of the original Variezy but they dont
 really show
  the attachment very well so I made a quick sketch in auto cad 14 and
  have attached it to this Email
  to show the attaching point relationships that you requested.
  Rolland

 Please export that as a dxf file Rolland rather than a dwg.

 Paul Lamar


Not Rolland, but here you go Paul.

Jarrett

Thanks Jarrett.
I hate to be the bearer of bad news Rolland but IMHO the motor mount
fixing in the Variezy are not up to the weight of a 2 rotor.
In addition there is no easy way to get the motor mount tubes
around the engine to where they are needed. At 14 inches or so the
fuselage is not quite wide enough. In addition the distance between
upper and lower hard point are going to drastically increase the
loads in the tubes at high G pull ups and hard landings.

My advice is build or find a Long EZ instead.

I also understand there is a problem with those aluminum
angles where they are bonded into the fiberglass. I know
of at least one case where they had to be replaced by
4130 steel. The Variez was designed for a Volkswagen engine.
Putting a O-200 in apparently over stressed the structure.

If you are still bound and determined to put a
rotary in regardless of the weight or you plan on using
aluminum end housing to lower the weight you could add
hard points to the top of the spar outboard of the
fuselage and use the landing gear bolts as lower
hard points.

Something like these 3Ds.


Paul Lamar