Return-Path: Sender: (Marvin Kaye) To: lml@lancaironline.net Date: Sat, 17 Jan 2004 12:15:02 -0500 Message-ID: X-Original-Return-Path: Received: from [64.4.14.86] (HELO hotmail.com) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 2936366 for lml@lancaironline.net; Sat, 17 Jan 2004 11:34:20 -0500 Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Sat, 17 Jan 2004 08:22:29 -0800 Received: from 24.54.4.78 by law10-oe29.law10.hotmail.com with DAV; Sat, 17 Jan 2004 16:22:29 +0000 X-Originating-IP: [24.54.4.78] X-Originating-Email: [joscales98@hotmail.com] X-Sender: joscales98@hotmail.com From: "Jim Scales" X-Original-To: "Lancair Mailing List" References: Subject: Re: [LML] Oil temp's on ES X-Original-Date: Sat, 17 Jan 2004 10:22:35 -0600 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0017_01C3DCE3.D31C9AE0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: MSN 8.5 Seal-Send-Time: Sat, 17 Jan 2004 10:22:35 -0600 X-MimeOLE: Produced By MSN MimeOLE V8.50.0017.1202 X-Original-Message-ID: X-OriginalArrivalTime: 17 Jan 2004 16:22:29.0792 (UTC) FILETIME=[1A5E6A00:01C3DD16] This is a multi-part message in MIME format. ------=_NextPart_000_0017_01C3DCE3.D31C9AE0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I found two problems on my ES that affected oil temp. Not enough air = getting to the oil cooler box and not enough opening in the back of the = cowl to create a low pressure area. I routed a 2 1/2 inch scat tube from just inside the left inlet back to = the oil cooler and dumped it into the box. I, also, created an electric = flap out of the rear section of the nose gear fairing. It opens to = create about 20 square inches of exit area for air behind the engine. I now see climbout temps on really hot days, at 120 kts, of 215-220 on = oil and 420 or so on CHT. After stabilizing at cruise I usually see = 190-195 on oil and 380 on CHT, with the cowl flap closed. When I winterize, I remove the scat tube and install a door on the oil = cooler box. On really cold days, I will see oil in the 175 range with = door closed and CHT in 300-320 range with cowl flap closed. My .02 worth. Jim Scales ----- Original Message -----=20 From: Jim Cameron=20 To: Lancair Mailing List=20 Sent: Friday, January 16, 2004 7:44 PM Subject: [LML] Oil temp's on ES The fellow who bought my last ES is not happy with the oil temp's = he's been seeing lately, particularly on climb-out. (This is with the = normally aspirated IO-550-N.) The oil temp seems to pop up to about 220 = degrees, which he thinks is too high. In cruise, it only comes back to = about 195. He's already jettisoned the door on the oil cooler, but that = didn't make any difference. I know there are quite a few ES drivers who = monitor this list, so how about some feedback on two questions; (1) Are these oil temperatures a problem? (Redline is 240, but = 220 does seem high, no?) (2) Any suggestions for getting them down? We've talked about obvious things like checking the baffling for = tightness. His cylinder head temp's all seem OK. I think he's = considering an after-market, add-on oil cooler, but that seems like an = extreme solution. Ducting more air into the oil cooler box would create = other problems, like ducting it from someplace, increased cooling drag, = and the possibility of robbing cooling air from somewhere else. FYI, on another subject, he's also having trouble with the blade = seals on the MT prop, which have been leaking grease. MT told him they = "didn't do it that way any more," but still want to charge him $600 for = a prop with only about 150 hours on it. This is to remedy what was = obviously a design flaw, which they have corrected. On that same prop, = the spinner I got with it was badly off-center, and the whole assembly = had to be replaced. The factory did send me a new one, but I was still = out of pocket to have a prop shop change it out and re-balance it (total = about $350). Seems like MT warranty back-up ain't all it should be. Jim Cameron Legacy in progress ------=_NextPart_000_0017_01C3DCE3.D31C9AE0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
I found two problems on my ES that affected oil temp.  Not = enough air=20 getting to the oil cooler box and not enough opening in the back of the = cowl to=20 create a low pressure area.
 
I routed a 2 1/2 inch scat tube from just inside the left inlet = back to the=20 oil cooler and dumped it into the box.  I, also, created an = electric flap=20 out of the rear section of the nose gear fairing.  It opens to = create about=20 20 square inches of exit area for air behind the engine.
 
I now see climbout temps on really hot days, at 120 kts, of 215-220 = on oil=20 and 420 or so on CHT.  After stabilizing at cruise I usually see = 190-195 on=20 oil and 380 on CHT, with the cowl flap closed.
 
When I winterize, I remove the scat tube and install a door on the = oil=20 cooler box.  On really cold days, I will see oil in the 175 range = with door=20 closed and CHT in 300-320 range with cowl flap closed.
 
My .02 worth.
 
Jim Scales
----- Original Message -----
From: Jim Cameron
To: Lancair Mailing List
Sent: Friday, January 16, 2004 = 7:44=20 PM
Subject: [LML] Oil temp's on = ES

    The fellow who = bought my last=20 ES is not happy with the oil temp's he's been seeing lately, = particularly on=20 climb-out. (This is with the normally aspirated IO-550-N.) =  The=20 oil temp seems to pop up to about 220 degrees, which he thinks is too=20 high.  In cruise, it only comes back to about 195.  He's = already=20 jettisoned the door on the oil cooler, but that didn't make any=20 difference.  I know there are quite a few ES drivers who monitor = this=20 list, so how about some feedback on two questions;
 
    (1)  Are = these oil=20 temperatures a problem?  (Redline is 240, but 220 does seem high, = no?)
 
    (2)  Any = suggestions for=20 getting them down?
 
    We've talked about = obvious=20 things like checking the baffling for tightness.  His cylinder = head=20 temp's all seem OK.  I think he's considering an after-market, = add-on oil=20 cooler, but that seems like an extreme solution.  Ducting more = air into=20 the oil cooler box would create other problems, like ducting it from=20 someplace, increased cooling drag, and the possibility of robbing = cooling air=20 from somewhere else.
 
    FYI, on another = subject, he's=20 also having trouble with the blade seals on the MT prop, which have = been=20 leaking grease.  MT told him they "didn't do it that way any = more," but=20 still want to charge him $600 for a prop with only about 150 hours on=20 it.  This is to remedy what was obviously a design flaw, which = they have=20 corrected.  On that same prop, the spinner I got with it was = badly=20 off-center, and the whole assembly had to be replaced.  The = factory did=20 send me a new one, but I was still out of pocket to have a prop shop = change it=20 out and re-balance it (total about $350).  Seems like MT warranty = back-up=20 ain't all it should be.
 
 
Jim Cameron
Legacy in progress
 
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