X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from sccmmhc92.asp.att.net ([204.127.203.212] verified) by logan.com (CommuniGate Pro SMTP 5.1c.4) with ESMTP id 1401715 for flyrotary@lancaironline.net; Wed, 13 Sep 2006 17:00:41 -0400 Received-SPF: none receiver=logan.com; client-ip=204.127.203.212; envelope-from=btilley@mchsi.com Received: from [192.168.1.101] (12-218-75-32.client.mchsi.com[12.218.75.32]) by sccmmhc92.asp.att.net (sccmmhc92) with SMTP id <20060913205955m9200dpnv7e>; Wed, 13 Sep 2006 21:00:01 +0000 Mime-Version: 1.0 (Apple Message framework v752.2) In-Reply-To: References: Content-Type: multipart/alternative; boundary=Apple-Mail-1--514631546 Message-Id: <0EABD516-88A4-4E63-9BA8-CC1238CF77B3@mchsi.com> From: Bob Tilley Subject: Re: [FlyRotary] XR-40 Date: Wed, 13 Sep 2006 16:59:54 -0400 To: "Rotary motors in aircraft" X-Mailer: Apple Mail (2.752.2) --Apple-Mail-1--514631546 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Rusty, This is the motor that I reported a year and a half ago. They also said they were planning a 2 rotor 80 hp. Glad to see they have it on a plane. That was in the works when I saw it. But that is about all the help I can offer. they seem to be moving in the right direction. Bob Albany, Ga On Sep 13, 2006, at 10:48 AM, Russell Duffy wrote: > 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 > > --Apple-Mail-1--514631546 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=ISO-8859-1 Rusty,

This is the motor that I = reported a year and a half ago. They also said they were planning a 2 = rotor 80 hp. Glad to see they have it on a plane. That was in the works = when I saw it. But that is about all the help I can offer. they seem to = be moving in the right direction.

Bob
Albany, = Ga

On Sep 13, 2006, at 10:48 AM, Russell Duffy = wrote:

Greetings,
=A0
=
Has anyone = looked at the XR-40 engine that the Phantom guys are testing?=A0 = http://www.rotary-xr40.com/=A0=A0= As I understand it, these are go kart engines that normally run up to = 10,000 rpm, and make about 52 HP.=A0 For aircraft use, they are derating = them to 40 HP at=A07600 rpm.=A0
=A0
=
I'm not in = the market for this, but I noticed in the FAQ that they don't have a = pressure feed oil system.=A0 Instead, they use roller bearings, and 50:1 = pre-mix.=A0 That would sure save some weight, and complexity.=A0 Has = that ever been done on other rotary engines?
=
=A0
Cheers,
Rusty
=A0
=
=A0

= = --Apple-Mail-1--514631546--