X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: <13brv3@bellsouth.net> Received: from imf18aec.mail.bellsouth.net ([205.152.59.66] verified) by logan.com (CommuniGate Pro SMTP 4.3.4) with ESMTP id 1003987 for flyrotary@lancaironline.net; Thu, 16 Jun 2005 10:09:49 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.66; envelope-from=13brv3@bellsouth.net Received: from ibm61aec.bellsouth.net ([65.6.194.9]) by imf18aec.mail.bellsouth.net with ESMTP id <20050616140904.TQNT16444.imf18aec.mail.bellsouth.net@ibm61aec.bellsouth.net> for ; Thu, 16 Jun 2005 10:09:04 -0400 Received: from rd ([65.6.194.9]) by ibm61aec.bellsouth.net with ESMTP id <20050616140904.TKVT4468.ibm61aec.bellsouth.net@rd> for ; Thu, 16 Jun 2005 10:09:04 -0400 From: "Russell Duffy" <13brv3@bellsouth.net> To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: turbo oil drain Date: Thu, 16 Jun 2005 09:09:05 -0500 Message-ID: <000001c5727c$f4a0b090$6101a8c0@rd> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C57253.0BCAA890" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2527 This is a multi-part message in MIME format. ------=_NextPart_000_0001_01C57253.0BCAA890 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Rusty, I couldn't hold back on this one. Think about it, 1600=B0F = exhaust gas in a zone of back pressure, and therefore heat transfer, bearings and = about 50k rpms! If you can think of a more difficult spot for a seal please = let me know about it! Bill Jepson (Wondering how turbos stay together in the first place.)=20 =20 For the record, I know it's hot :-) =20 =20 So does this mean the compressor side can have a seal, since it's not = 1600 degrees? Would you almost always lose the oil out the exhaust, and not = into the intake? If you lost it into the intake, it could affect the way the engine runs, but if it goes into the exhaust side, it will just blow out = the pipe. =20 =20 This goes back to using an oil shutoff to stop the oil leak, but as we discussed before, you won't know this is happening unless you smell oil burning. I'm pretty well tuned into the smell of oil burning now though = :-( =20 I still have the stock low oil sensor functional in the pan, and it = lights a very bright LED on the panel. Perhaps that would be my only warning, = but you'd have no idea of where the oil was really being lost from. You'd essentially have to be willing to waste the turbo for any oil loss just = in case it was in the turbo. =20 =20 By not planning to do this soon, it gives me time to think about all the options, and hopefully talk myself out of it :-) =20 Cheers, Rusty (single rotor mount, take two) =20 =20 =20 =20 =20 ------=_NextPart_000_0001_01C57253.0BCAA890 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message
Rusty, I couldn't hold back on this one. Think about it, 1600=B0F = exhaust gas=20 in a zone of back pressure, and therefore heat transfer, bearings and = about 50k=20 rpms! If you can think of a more difficult spot for a seal please let me = know=20 about it!
Bill Jepson (Wondering how turbos stay together in the first = place.) 
 
For = the record, I=20 know it's hot :-)  
 
So = does this mean=20 the compressor side can have a seal, since it's not 1600 degrees?  = Would=20 you almost always lose the oil out the exhaust, and not into the = intake? =20 If you lost it into the intake, it could affect the way the engine runs, = but if=20 it goes into the exhaust side, it will just blow out the pipe. =20
 
This goes back to=20 using an oil shutoff to stop the oil leak, but as we discussed = before, you=20 won't know this is happening unless you smell oil burning.  I'm = pretty well=20 tuned into the smell of oil burning now though :-(   =20
 
I = still have the=20 stock low oil sensor functional in the pan, and it lights a very bright = LED on=20 the panel.  Perhaps that would be my only warning, but you'd have = no idea=20 of where the oil was really being lost from.  = You'd essentially have=20 to be willing to waste the turbo for any oil loss just in case = it was=20 in the turbo.  
 
By = not planning=20 to do this soon, it gives me time to think about all the options, and = hopefully=20 talk myself out of it :-)
 
Cheers,
Rusty (single=20 rotor mount, take two)
 
 
 
 
 
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