X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mx2.magma.ca ([206.191.0.250] verified) by logan.com (CommuniGate Pro SMTP 4.3.4) with ESMTPS id 1001204 for flyrotary@lancaironline.net; Mon, 13 Jun 2005 23:04:04 -0400 Received-SPF: none receiver=logan.com; client-ip=206.191.0.250; envelope-from=ianddsl@magma.ca Received: from mail2.magma.ca (mail2.magma.ca [206.191.0.214]) by mx2.magma.ca (8.13.0/8.13.0) with ESMTP id j5E33IcR015800 for ; Mon, 13 Jun 2005 23:03:19 -0400 Received: from binky (ottawa-hs-64-26-156-111.s-ip.magma.ca [64.26.156.111]) by mail2.magma.ca (8.13.0/8.13.0) with SMTP id j5E33FtT024517 for ; Mon, 13 Jun 2005 23:03:18 -0400 Reply-To: From: "Ian Dewhirst" To: "Rotary motors in aircraft" Subject: RE: [FlyRotary] turbo oil drain Date: Mon, 13 Jun 2005 23:03:10 -0400 Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_007E_01C5706C.1168D8F0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.6604 (9.0.2911.0) In-Reply-To: X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 Importance: Normal This is a multi-part message in MIME format. ------=_NextPart_000_007E_01C5706C.1168D8F0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit MessageHi Rusty, http://www.sdsefi.com/rv11.htm halfway down the page - turbo scavenge pump on a turbo subaru RV6, no other way around it. -- Ian -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On Behalf Of Russell Duffy Sent: Monday, June 13, 2005 10:51 PM To: Rotary motors in aircraft Subject: [FlyRotary] turbo oil drain Let me start this message by saying- shut up John :-) Now that that's out of the way, my little brain is concocting another turbo scheme for the RV-3. It seems that I have an almost perfect place to put a turbo now, which is right at the cowl exit. The only problem I see is the oil return from the turbo. It's my understanding that you can't have any backpressure at all on the return. Is that true for all turbos, or just some? In other words, can you specify a certain type of bearings and seals that will allow this uphill return of oil? I've heard of scavenging pumps to handle the oil return, but in the bit of searching I've done, I just can't find anything that appears to be made for this. If I could work around this oil return, and hold off long enough for someone to find a turbo that works, this could be a sweet deal. Cheers, Rusty (OK, John, go ahead and say it) ------=_NextPart_000_007E_01C5706C.1168D8F0 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Message
Hi=20 Rusty, http://www.sdsefi.com/rv11.htm halfway=20 down the page - turbo scavenge pump on a turbo subaru RV6, no = other way=20 around it. -- Ian
 
 
 -----Original = Message-----
From:=20 Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On = Behalf Of=20 Russell Duffy
Sent: Monday, June 13, 2005 10:51 = PM
To:=20 Rotary motors in aircraft
Subject: [FlyRotary] turbo oil=20 drain

Let me start = this message=20 by saying- shut up John :-)
 
Now that = that's out of=20 the way, my little brain is concocting another turbo scheme for the=20 RV-3.  It seems that I have an almost perfect place to put a = turbo now,=20 which is right at the cowl exit.  The only problem I see is the = oil=20 return from the turbo. 
 
It's my = understanding=20 that you can't have any backpressure at all on the return.  Is = that true=20 for all turbos, or just some?  In other words, can you specify a = certain=20 type of bearings and seals that will allow this uphill return of=20 oil?  
 
I've heard of = scavenging=20 pumps to handle the oil return, but in the bit of searching I've done, = I just=20 can't find anything that appears to be made for this. =20
 
If I could = work around=20 this oil return, and hold off long enough for someone to find a turbo = that=20 works, this could be a sweet deal. 
 
Cheers,
Rusty (OK, = John,  go=20 ahead and say it)
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