subscribe

I plan to put one in a Midget Mustang.

Thanks,
Jeff


That is a real packaging challenge.
A 2 rotor with cooling system would be a lot to shoe horn everything in.

   A p-port one rotor might  be a better idea.

Do you have a 3D dwg program?

Paul Lamar



Hi Paul,

I agree it would be tight.  I like the HP/weight ratio of the rotary.
So far the project is still in the planning stages.  I know very little
about the rotary engines.  I think the firewall width is about the same
as a rotary.  I plan to move the cooling aft of the firewall.

I will be researching rotary engines more.  The p port engine uses a
different intake port?

No drawing program yet......

Jeff

A P51 type cooling system would help.  You will need some structural
changes
to the aft fuselage.  If you scan that part of the dwgs and email them
to me I will see what can be done.


The 56 inch prop diameter is unusual. That implies a higher prop RPM so
perhaps you could save the weight and expense of a gear box and run the
all aluminum P-port Mazda at 3500 RPM direct drive. The intake runners would
have to be about 36 inches long to get the torque peak down to 3000 RPM
  but that could be done by wrapping them up and over the engine. An
aircraft
up draft carb would help or if you are bucks up a Motec EFI.

I always enjoy a design challenge so I will do a 3D for you.  HP would
be about 200 X 3500 divided by 5252 or 133. Engine weight would be about
150 pounds less cooling system.

In the mean time read this article on the web site.
http://www.rotaryeng.net/fund-of-intake.html

Here are some picture of an RV4 to give you an idea of how
things ft in a narrow airplane.

Paul Lamar

------------------------------------------------------------------------------------------------

Here is another idea for a direct drive 2 rotor. Dual small turbo's bolted directly to
the rotor housings. A throttle for each. Saves the weight and expense of a muffler.
More compact than an up and over intake system. Good high altitude performance.
Simple intake manifold. No p-port required but would help.

BTW I know where you can get a direct drive prop shaft If Perry Mick still has it :)
He converted his ducted fan to a gear box.

You will have to beef up the front thrust bearing in the Mazda. No real problem.

Using a larger spinner will get everything inside the cowl.

Really interesting project.

Paul Lamar


   The Rotary Engine News Letter. Powered by Linux.
   ACRE NL web site. http://www.rotaryeng.net <http://www.rotaryeng.net/>
   You Tube http://tinyurl.com/beqqxas
   Copyright 1998-2013 All world wide rights reserved.