Subject: re engine in MM
From: rotaryeng
Date: 10/25/2013, 2:44 AM
To: AAA-rotaryeng


 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


Hi Paul,

trust this mmail finds yo well and in good spirits

I have become very interested in the one rotor engine in the photographs

could you please give me some information regarding that or other single
rotor engine similar that is in the photograp

       which engine is being used
       what sort of turbo is used on the engine
       and how much hp does it make at wht rpm

Some very interesting things happening on this site


Kind regards
George Crooks

The guy you want to get in touch with is Richard Sohn.

He is our goto guru on one rotor engines.

Richard Sohn
N2071U

http://www.fairpoint.net/~res12/home.html

Paul Lamar

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