X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail04.syd.optusnet.com.au ([211.29.132.185] verified) by logan.com (CommuniGate Pro SMTP 5.1c.4) with ESMTPS id 1401804 for flyrotary@lancaironline.net; Wed, 13 Sep 2006 17:34:50 -0400 Received-SPF: none receiver=logan.com; client-ip=211.29.132.185; envelope-from=lendich@optusnet.com.au Received: from george (d58-105-118-207.dsl.nsw.optusnet.com.au [58.105.118.207]) by mail04.syd.optusnet.com.au (8.12.11/8.12.11) with SMTP id k8DLY4Nm023539 for ; Thu, 14 Sep 2006 07:34:05 +1000 Message-ID: <001201c6d77c$576b6390$cf76693a@george> From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] XR-40 Date: Thu, 14 Sep 2006 07:34:05 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000F_01C6D7D0.284815A0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 X-Antivirus: avast! (VPS 0637-1, 13/09/2006), Outbound message X-Antivirus-Status: Clean This is a multi-part message in MIME format. ------=_NextPart_000_000F_01C6D7D0.284815A0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MessageRusty 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 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. =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? Cheers, Rusty ------=_NextPart_000_000F_01C6D7D0.284815A0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message
Rusty
If needing 120hp you could use 3 of=20 them!
George (down under)
----- Original Message -----
From:=20 Russell=20 Duffy
Sent: Thursday, September 14, = 2006 12:48=20 AM
Subject: [FlyRotary] = XR-40

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=20 40 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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