Just a few parts made at the shop.

  Scott- Iron Design


  Excellent work.  You can obviously handle the
 job.   The problem with
  hanging rotary engines in all types of aircraft is that a
 single
  immutable fixture will not suffice.  You need a
 fixture that can deal
  with different thrust lines, different thrust off sets and
 different
  ways of attaching the engine mount to the firewall.  I've come up with
  something that works but maybe you can build on my efforts
 to create
  an even better design.  Are you interested?

   Jerry

  I'll support you Scott. There are people out there that
 don't
  want to build their own. Jerry has gone through a lot of
 jigs and
  motor
  mounts in the last 11 years that I have known him. We have
 gone down
  a lot of roads that we had to make a U turn on. :) The
 attached
  jpgs are a brief history. Read all of this while you are
 at it too.
  http://www.rotaryeng.net/motor.html

  Paul Lamar




 Jerry,         I would be interested, with Pauls
 help/knowledge of what is
 required, we can do almost endless set up of one of fire
 wall jigs,
 as long as I know the thrust line angle, and fire wall
 hole
 placements... then we can make that fire wall blank on the
 CNC laser
 bed to pin point accuracy for the bolt placement.  Then adjustable
 fixtures for the balance.  I will pick out an example
 photo for a
 super cub look without the mount but with the engine.

 Paul if you could send my email address to Jerry and we can
 take the
 little details off the list thread line.

 there are some great things that can be done with solid
 design work,
 but we still needs someone like Paul for calculated
 placement.

 Scott

 Scott- Iron Design L.L.C.
 Scott Weinberg
 13631 Vail Ave
 Clarksville, Iowa 50619
 319-276-4400 home/office
 319-404-4401  cell/shop/office
 scottw@butler-bremer.com
 http://www.irondesign-airparts.com/Tailwheels.htm


 jerry@jerryhey.com

 Paul Lamar



 Paul -- Have you designed a Bearhawk Engine Mount?

Bearhawk is designed for 180 to 250hp powerplant. I'm building as light as
possible, so 180 to 200 hp Renesis is the goal.  The Bearhawk is
designed at 6.6G Utility, 2500 pounds.

http://www.bearhawkaircraft.com for more details.

Tom Walter

Not yet.  I need some information to do it. I need a sketch of the
firewall showing the position of the motor mount hard points, the position
of the thrust line, the engine off set angles both side to side and up
and down as well as the distance from the firewall to the prop flange.
Perhaps a copy of the manufactures fire wall dwg if you have it.

Here is what Scott or Jerry needs to get an accurate position of the
firewall hard points. Five strips of steel sheet metal one inch wide with holes
near the ends that represents the distance between those hard points.
Mail or ship those strips to Scott or Jerry so your new motor mount
will fit exactly. If the strips bolt to your firewall  exactly the
finished mount will also fit.

Here is a sketch of the concept.

Go for a p-port 250 HP. It will help you get off the ground quicker and is no
heaver than 200 HP. Unless of course you don't want to take your engine apart.

Paul Lamar