X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: <13brv3@bellsouth.net> Received: from imf16aec.mail.bellsouth.net ([205.152.59.64] verified) by logan.com (CommuniGate Pro SMTP 4.3.4) with ESMTP id 1001200 for flyrotary@lancaironline.net; Mon, 13 Jun 2005 22:51:59 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.64; envelope-from=13brv3@bellsouth.net Received: from ibm58aec.bellsouth.net ([65.6.194.9]) by imf16aec.mail.bellsouth.net with ESMTP id <20050614025114.WSOJ13767.imf16aec.mail.bellsouth.net@ibm58aec.bellsouth.net> for ; Mon, 13 Jun 2005 22:51:14 -0400 Received: from rd ([65.6.194.9]) by ibm58aec.bellsouth.net with ESMTP id <20050614025113.UJGS1856.ibm58aec.bellsouth.net@rd> for ; Mon, 13 Jun 2005 22:51:13 -0400 From: "Russell Duffy" <13brv3@bellsouth.net> To: "Flyrotary List" Subject: turbo oil drain Date: Mon, 13 Jun 2005 21:51:14 -0500 Message-ID: <001801c5708b$edff3e20$6101a8c0@rd> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0019_01C57062.05293620" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2527 This is a multi-part message in MIME format. ------=_NextPart_000_0019_01C57062.05293620 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Let me start this message by saying- shut up John :-) =20 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. =20 =20 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? =20 =20 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. =20 =20 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. =20 =20 Cheers, Rusty (OK, John, go ahead and say it) ------=_NextPart_000_0019_01C57062.05293620 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message
Let me start = this message=20 by saying- shut up John :-)
 
Now that that's = out of the=20 way, my little brain is concocting another turbo scheme for the = RV-3.  It=20 seems that I have an almost perfect place to put a turbo now, which is = right at=20 the cowl exit.  The only problem I see is the oil return from the=20 turbo. 
 
It's my = understanding that=20 you can't have any backpressure at all on the return.  Is that true = for all=20 turbos, or just some?  In other words, can you specify a certain = type of=20 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.  =
 
If I could work = around this=20 oil return, and hold off long enough for someone to find a turbo that = works,=20 this could be a sweet deal. 
 
Cheers,
Rusty (OK, = John,  go=20 ahead and say it)
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