X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Wed, 21 Mar 2012 13:49:50 -0400 Message-ID: X-Original-Return-Path: Received: from nm23-vm0.bullet.mail.sp2.yahoo.com ([98.139.91.224] verified) by logan.com (CommuniGate Pro SMTP 5.4.4) with SMTP id 5451098 for lml@lancaironline.net; Wed, 21 Mar 2012 12:30:18 -0400 Received-SPF: none receiver=logan.com; client-ip=98.139.91.224; envelope-from=bu131@swbell.net Received: from [98.139.91.66] by nm23.bullet.mail.sp2.yahoo.com with NNFMP; 21 Mar 2012 16:29:42 -0000 Received: from [98.139.44.81] by tm6.bullet.mail.sp2.yahoo.com with NNFMP; 21 Mar 2012 16:29:42 -0000 Received: from [127.0.0.1] by omp1018.access.mail.sp2.yahoo.com with NNFMP; 21 Mar 2012 16:29:42 -0000 X-Yahoo-Newman-Property: ymail-3 X-Yahoo-Newman-Id: 310663.16511.bm@omp1018.access.mail.sp2.yahoo.com Received: (qmail 44694 invoked by uid 60001); 21 Mar 2012 16:29:42 -0000 DomainKey-Signature:a=rsa-sha1; q=dns; c=nofws; s=s1024; d=swbell.net; h=X-YMail-OSG:Received:X-Mailer:References:Message-ID:Date:From:Reply-To:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=5eYEh46tDAEhvMQNFBNh+AVO4TvUugf5zgQ2sZgwwpt0H2UBf6882cDhtqzA/CZtaWDXppECCSE+RtRdrP0+6zwNhfhQwTc0DXDmMGZLBu8KwTtjXpyJu2B9EafHpdB0cKCs7gh8WpXUruuE7voo3JALhH66i0wLXyJyOsCHXCI=; X-YMail-OSG: PVP6tmIVM1mvv5r3P5lJ4wmDKKu13iRvIQSVAuXzeCOr4BI 662hn5aJhw2h52cidl7ioFdx9xQ7ZUr.gAHF6a86_F.kwzj4WO9fTmtKhJl8 FckRanPENpuPRJ48aGYhYz15_DU70hzPmx.ki69.eVfpPIOE5UhgFV1OnwQK A_ltcsxAPiCe1KsT0fYrpHAOeIk7dWWvi2wOK_DpCxlUxZdRFvgNV1nnbhck 7yal_dErJiCBP3ES0csRVlsM.JyTGR7hMX3jbQ2kvXOQZ_a.kxbfnFpzrzem H0jfyQbbhGt29_QXbDFA2LdCqXiQyCgfGEGhBpkdiK5ZdPOVvgavFnDVwnov xDFz9eSIEE9EnE4X_wpBK8Xys7MXrqzDpjyulv5mi6.nfU2cVKkKkHp.wJbl vikh8WjBikYyvzxkaOM4y8mAp_I0Uvvdf9xvID.R0A_TFwHUIyWrsabUSG2V VFLakVAgHIKd5OYw6b3INeFVhz7Lv4O6IzxZ7WxT00Gts7oGL Received: from [70.254.83.98] by web80005.mail.sp1.yahoo.com via HTTP; Wed, 21 Mar 2012 09:29:41 PDT X-Mailer: YahooMailWebService/0.8.116.338427 References: X-Original-Message-ID: <1332347381.10500.YahooMailNeo@web80005.mail.sp1.yahoo.com> X-Original-Date: Wed, 21 Mar 2012 09:29:41 -0700 (PDT) From: Dr Andres Katz Reply-To: Dr Andres Katz Subject: Re: [LML] Crankcase "venting" after flight X-Original-To: Lancair Mailing List In-Reply-To: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="2086511853-858899697-1332347381=:10500" --2086511853-858899697-1332347381=:10500 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable I have close to 500 hrs IV-P compressions in the 70-75 LOP tried never to e= xceed 400 CHT on climb=0AI do open the oil cap after every flight, there is= always moisture in the form of water droplets that collects in the undersi= de=0Aof the cap. I leave the cowling door open so I never forget to close t= he oil filler. I did forget a couple of times to do it=0Aand i can report t= hat minimal oil seepage noted after a short flight from the oil filler.=0AI= believe that big continentals make water=0A=0A=0A_________________________= _______=0A From: Gary Casey =0ATo: lml@lancaironline.= net =0ASent: Wednesday, March 21, 2012 7:47 AM=0ASubject: [LML] Crankcase "= venting" after flight=0A =0A=0AThe other day, I watched someone taxi up and= the first thing he did was open the oil door and take off the cap. =A0I (p= olitely, of course :-) asked him why he did that, to which he replied, "loo= k at all those fumes - I'm letting them out." =A0And I then read in the las= t Lancair post, "....=A0and crankcase always vented after flying." =A0Is th= is a normal thing to do? =A0In 40 years of flying I've only seen it done on= ce and never heard of the practice before or since. =A0I can't imagine that= opening the cap does much to change the atmosphere in the crankcase. =A0Is= there any test data or theory to support the practice? =A0I'll admit that = I'm a bit paranoid - If I check the oil and find I need some, I'll carefull= y replace the cap (assuming the dipstick is part of the cap), go get the oi= l and then take the cap back off to pour it in.=0A=0AI try to never walk aw= ay, leaving anything in an unairworthy condition assuming I'll come back an= d fix it later. =A0Maybe it goes way back to when someone took off from the= local airport, noticed oil coming from the cowling (of a twin), realized t= hat he had left off an oil cap, shut the engine down, overflew several good= airports to come back, came in high, made a go-round, botched it, and you = know the rest. =A0One of the well-known test pilots did my first flight. = =A0He was casually (correction - I don't think anything he does is "casual"= ) watching me replace the plugs. =A0I hand-tightened the wires and walked a= way to get a wrench. =A0He about had a heart attack and chastised me for wa= lking away with parts of the plane looking like they were attached, but wer= en't. =A0He said "get the wrench first, then put the wires on."=0A=0AGary C= asey --2086511853-858899697-1332347381=:10500 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable
I have c= lose to 500 hrs IV-P compressions in the 70-75 LOP tried never to exceed 40= 0 CHT on climb
I do open the oil cap after every fli= ght, there is always moisture in the form of water droplets that collects i= n the underside
of the cap. I leave the cowling door= open so I never forget to close the oil filler. I did forget a couple of t= imes to do it
and i can report that minimal oil seep= age noted after a short flight from the oil filler.
= I believe that big continentals make water

From= : Gary Casey <casey.gary@yahoo.com>
To: lml@lancaironline.net
Sent: Wednesday, March 21, 2012 7:47 AM=
Subject: [LML] Crankc= ase "venting" after flight

=0A
The o= ther day, I watched someone taxi up and the first thing he did was open the= oil door and take off the cap.  I (politely, of course :-) asked him = why he did that, to which he replied, "look at all those fumes - I'm lettin= g them out."  And I then read in the last Lancair post, ".... and crankcase= always vented after flying."  Is this a normal thing to do? &n= bsp;In 40 years of flying I've only seen it done once and never heard of th= e practice before or since.  I can't imagine that opening the cap does= much to change the atmosphere in the crankcase.  Is there any test data or=0A theory to support the practice?  I= 'll admit that I'm a bit paranoid - If I check the oil and find I need some= , I'll carefully replace the cap (assuming the dipstick is part of the cap)= , go get the oil and then take the cap back off to pour it in.

I try to never walk away,= leaving anything in an unairworthy condition assuming I'll come back and f= ix it later.  Maybe it goes way back to when someone took off from the= local airport, noticed oil coming from the cowling (of a twin), realized t= hat he had left off an oil cap, shut the engine down, overflew several good= airports to come back, came in high, made a go-round, botched it, and you = know the rest.  One of the well-known test pilots did my first flight.=  He was casually (correction - I=0A don't think anything he does is "= casual") watching me replace the plugs.  I hand-tightened the wires an= d walked away to get a wrench.  He about had a heart attack and chasti= sed me for walking away with parts of the plane looking like they were atta= ched, but weren't.  He said "get the wrench first, then put the wires = on."

<= /div>
Gary Casey=


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