I'm new on this scene.  I'll take a moment to introduce myself.  I am
interested in using a rotary in pusher configuration in something like a
Long-Eze.  I am a mechanical engineer.  I design and sell waste management
systems.  If it's heavy, I can design and built it and make it work.  I'm
shifting back to "if it's light...".  I have years of flying and years as a
A&P Helper (high school and college); then years of wishing I could fly; now
facing years of building something to fly!

If anyone has an AutoCAD or other drawing of a 13B or Renesis I'd appreciate
seeing an installation.  I am especially interested in something that has a
small vertical dimension.  That seems to be a possible drawback of using a
rotary VS horizontally opposed piston engine, in that there are components
that are on top of the engine, or at least go across the top, and that adds
to the height.  Does anyone have installation examples of Rotaries with
nothing on top of them, and very little below, either, for that matter, that
they are willing to share?  Vertical space is the limitation.

Jim Beckman.
Austin, Texas

Here is the Skybolt 3D I just finished. The Rx8 engine is
physically the same size as all other 13B engines.

The pix are of Tracy Crooks RX8 installation with a
normally aspirated straight intake manifold.

It is about six inches from the thrust line to the
top of the engine.

Paul Lamar


Here are a few more ideas Jim. Most of the long runners are way too long.
Tuned for max BSFC at 4000 RPM or below.

Paul Lamar

Thanks for the .jpgs.  What 3D application originates these drawings?

I think that I should consider air in and exhaust out and accessory drives
as items that can be placed where I want them - more or less, so the top of
the engine can be free of stuff.  As I search the internet more I'm sure
I'll see more examples of installations.  There are some outfits that will
build up an engine for aero applications, so a good way to get the
installation size information I want could be to send them some specs and
ask what they can do.

I do not know the basic dimensions of the engine - what is L, H, W and
weight w/o accessories?

Jim Beckman.
Austin

I use Rhino 3D Jim. http://www.rhino3d.com/
Here are a few basic dimensions.
The bare engine weighs 190 pounds. Tracy PSRU weighs 45 pounds.
A typical firewall forward installation with everything is 300 to 320
pounds.

If you have a drawing program let me know what it is and I can
send you some iges files.

Paul Lamar
-

Thanks, Paul, for the pics.

I use AutoCAD and Visio.

I limp along in AutoCAD.  When I have a little cash I pay a couple
AutoCAD/Mechanical Desktop experts to make models for me.  I've not started
that process for this project, as I don't want to spend money on drafting
time for something I may not use.  AutoCAD is what I'd use in the long term
for design and fab drawings.

I am pretty good at a 2D flat-sheet drafting program by Microsoft call
VISIO.  I lay things up in this until I make a mess then I hand it over to
the guys to redo them on AutoCAD.

Jim Beckman

You tell me what you want and I 'll do it for free in Rhino.
If it has something to do with rotaries in airplanes of course :)

Paul Lamar