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
--
Rolland
  It is going to be a real challenge getting a two rotor behind a Vareze... I decided to go with a two rotor for my Long EZ project knowing that it would be tight but it wasn't until after I finished rebuilding the firewall and motor mounts that I had an appreciation for how tight.  Attached are a few pictures of what I went thru to modify my Long EZ.  To make a 13B fit and do it right in "my" mind, I needed to move the hard points to the outside of the longerons which required a new firewall and a modification to the top of the C-Spar for the new upper hard point location.  It is a lot of work but for me came out very nice and I think will work great. I'm not really sure of the width of a Vareze firewall but if it has any chance of working you would have to do something like what I did... The Other consideration is structural integrity of the hard point integration into the structure... Paul is right about the vareze not being designed for such a heavy engine but if you go with an aluminum engine and beef up the Hard Point Structural integration, I think you might be able to pull it off.  One thing to consider is the effect a heavier motor will have on your Landing gear... I solved this by putting Infinity Retractable gear on my Long EZ... That's another story but one I would not repeat again if I had a choice.  My advice would be to build a Long EZ if you had a choice but if you could put a P-Port on a vareze... man would that be a rocket!  It would make a great single seat fun machine.


Mike C.