X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from wx-out-0506.google.com ([66.249.82.237] verified) by logan.com (CommuniGate Pro SMTP 5.1c.4) with ESMTP id 1401186 for flyrotary@lancaironline.net; Wed, 13 Sep 2006 10:49:40 -0400 Received-SPF: pass receiver=logan.com; client-ip=66.249.82.237; envelope-from=russell.duffy@gmail.com Received: by wx-out-0506.google.com with SMTP id i29so2350884wxd for ; Wed, 13 Sep 2006 07:48:59 -0700 (PDT) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:from:to:subject:date:message-id:mime-version:content-type:x-priority:x-msmail-priority:x-mailer:x-mimeole:importance; b=uBl7+5/1gaYrumNGsyMwLFmTyLbyDJ2l0b5h1UolMWwTl68j414BDosNdGfXzhsGAQvLFn9UWPm6kuoHPG0uIm65ygVCDWab+hIXzfN6thBuKqXlEi6674l5DjKR1VdnSojEjX1DzX63ERwc3FxeJ3WUnyiZ2S5/PL/vq7IzEgY= Received: by 10.90.52.18 with SMTP id z18mr2699195agz; Wed, 13 Sep 2006 07:48:57 -0700 (PDT) Return-Path: Received: from rd ( [65.6.194.9]) by mx.gmail.com with ESMTP id 3sm8394308wrh.2006.09.13.07.48.56; Wed, 13 Sep 2006 07:48:56 -0700 (PDT) From: "Russell Duffy" To: "Flyrotary List" Subject: XR-40 Date: Wed, 13 Sep 2006 09:48:53 -0500 Message-ID: <000f01c6d743$bdc828f0$6101a8c0@rd> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0010_01C6D719.D4F220F0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2962 Importance: Normal This is a multi-part message in MIME format. ------=_NextPart_000_0010_01C6D719.D4F220F0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable 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_000_0010_01C6D719.D4F220F0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message
Greetings,
 
Has anyone = looked at the=20 XR-40 engine that the Phantom guys are testing?  = http://www.rotary-xr40.com/ = ; =20 As I understand it, these are go kart engines that normally run up to = 10,000=20 rpm, and make about 52 HP.  For aircraft use, they are derating = them to 40=20 HP at 7600 rpm. 
 
I'm not in the = market for=20 this, but I noticed in the FAQ that they don't have a pressure feed oil=20 system.  Instead, they use roller bearings, and 50:1 pre-mix.  = That=20 would sure save some weight, and complexity.  Has that ever been = done on=20 other rotary engines?
 
Cheers,
Rusty
 
 
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