X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from ironmaiden.mail.utexas.edu ([128.83.32.53] verified) by logan.com (CommuniGate Pro SMTP 5.1c.4) with ESMTP id 1402649 for flyrotary@lancaironline.net; Thu, 14 Sep 2006 08:23:38 -0400 Received-SPF: none receiver=logan.com; client-ip=128.83.32.53; envelope-from=mark.steitle@austin.utexas.edu DomainKey-Signature: s=main; d=austin.utexas.edu; c=nofws; q=dns; b=VHrfZRzLvQDOfvoK0UWay/r/uxq6PG4L19SoMXdAJ+kup+CpZHY5WKcgF2etlLhTs5qvM1PCeQZrIIBWLY+HPWaE9/g3jnwn9Ti+XuabzQViX41f8OgDBgiUCb7YF7vL6is7a1U1n83CyihpdtXVoxOE21pxbk+564wPp2Ed51s=; Received: from exb01.austin.utexas.edu (HELO MAIL01.austin.utexas.edu) ([129.116.87.142]) by ironmaiden.mail.utexas.edu with ESMTP; 14 Sep 2006 07:22:59 -0500 X-MimeOLE: Produced By Microsoft Exchange V6.5 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01C6D7F8.83B9EE97" Subject: RE: [FlyRotary] Re: XR-40 Date: Thu, 14 Sep 2006 07:22:58 -0500 Message-ID: <87DBA06C9A5CB84B80439BA09D86E69E05A843A1@MAIL01.austin.utexas.edu> in-reply-to: X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [FlyRotary] Re: XR-40 Thread-Index: AcbXfHrcKlFHIbwZQq2IFEvjTmqmRgAe+upA From: "Mark R Steitle" To: "Rotary motors in aircraft" This is a multi-part message in MIME format. ------_=_NextPart_001_01C6D7F8.83B9EE97 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable ...and build a scaled down version of the Ford Tri-motor. ;-) =20 Mark S. (back to lurking) =20 ________________________________ 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 =20 Rusty If needing 120hp you could use 3 of them! George (down under) ----- Original Message -----=20 From: Russell Duffy =20 To: Rotary motors in aircraft =20 Sent: Thursday, September 14, 2006 12:48 AM Subject: [FlyRotary] XR-40 =20 Greetings, =20 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. =20 =20 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? =20 Cheers, Rusty =20 =20 ------_=_NextPart_001_01C6D7F8.83B9EE97 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable 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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