Return-Path: <13brv3@bellsouth.net> Received: from imf21aec.mail.bellsouth.net ([205.152.59.69] verified) by logan.com (CommuniGate Pro SMTP 4.2.1) with ESMTP id 408692 for flyrotary@lancaironline.net; Mon, 13 Sep 2004 10:50:00 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.69; envelope-from=13brv3@bellsouth.net Received: from rd ([65.6.194.9]) by imf21aec.mail.bellsouth.net (InterMail vM.5.01.06.11 201-253-122-130-111-20040605) with ESMTP id <20040913144934.TGGG27018.imf21aec.mail.bellsouth.net@rd> for ; Mon, 13 Sep 2004 10:49:34 -0400 From: "Russell Duffy" <13brv3@bellsouth.net> To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: high oil pressure and coolers Date: Mon, 13 Sep 2004 09:49:36 -0500 Message-ID: <002701c499a0$e3665c90$6101a8c0@rd> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0028_01C49976.FA905490" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 Importance: Normal In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_0028_01C49976.FA905490 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit I wish that there was a great answer for the oil temp question. The failure from over temp oil is a rotor bearing loss. Why? It has the highest stress on the bearing overlay. As always, a rotary education in every email :-) This is the first time someone has actually explained the reason for the oil temp recommendations, and it finally makes sense. If the numbers you're quoting are in the pan, then I guess seeing temps in the 220-230 range after the cooler is probably aiming for the devils favorite chair. I'll just keep 210 after the cooler as a hard limit, to be exceeded only if there's some sort of emergency situation. Thanks again for the awesome message. I always feel guilty asking you questions, because I know you'll spend the time to write long complete replies. If you ever decide to write a book, I'll be in line for the first copy. Thanks again, Rusty (dead center of Ivan prediction, but my personal prediction is that it's going to continue West) ------=_NextPart_000_0028_01C49976.FA905490 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Message

I wish that there was a great answer for the oil temp = question.=20 The failure
from over temp oil is a rotor bearing loss. Why? It has = the=20 highest stress on
the bearing overlay.

As = always, a rotary=20 education in every email :-)   This is the first time someone has = actually=20 explained the reason for the oil temp recommendations, and it finally = makes=20 sense. 
 
If the = numbers you're=20 quoting are in the pan, then I guess seeing temps in the 220-230 range = after the=20 cooler is probably aiming for the devils favorite chair.  I'll = just=20 keep 210 after the cooler as a hard limit, to be exceeded only if = there's some=20 sort of emergency situation. 
 
Thanks = again for the=20 awesome message.  I always feel guilty asking you questions, = because I know=20 you'll spend the time to write long complete replies.  If you ever = decide=20 to write a book, I'll be in line for the first=20 copy.  
 
Thanks=20 again,
Rusty = (dead center of=20 Ivan prediction, but my personal prediction is that it's going to=20 continue West)
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