Mailing List flyrotary@lancaironline.net Message #33614
From: Mark R Steitle <mark.steitle@austin.utexas.edu>
Subject: RE: [FlyRotary] Re: XR-40
Date: Thu, 14 Sep 2006 07:22:58 -0500
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Message

…and build a scaled down version of the Ford Tri-motor.  ;-)

 

Mark S.

(back to lurking)

 


From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of George Lendich
Sent: Wednesday, September 13, 2006 4:34 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: XR-40

 

Rusty

If needing 120hp you could use 3 of them!

George (down under)

----- Original Message -----

Sent: Thursday, September 14, 2006 12:48 AM

Subject: [FlyRotary] XR-40

 

Greetings,

 

Has anyone looked at the XR-40 engine that the Phantom guys are testing?  http://www.rotary-xr40.com/   As I understand it, these are go kart engines that normally run up to 10,000 rpm, and make about 52 HP.  For aircraft use, they are derating them to 40 HP at 7600 rpm. 

 

I'm not in the market for this, but I noticed in the FAQ that they don't have a pressure feed oil system.  Instead, they use roller bearings, and 50:1 pre-mix.  That would sure save some weight, and complexity.  Has that ever been done on other rotary engines?

 

Cheers,

Rusty

 

 

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