Return-Path: Received: from [65.54.169.108] (HELO hotmail.com) by logan.com (CommuniGate Pro SMTP 4.2b2) with ESMTP id 3190128 for flyrotary@lancaironline.net; Sun, 25 Apr 2004 18:24:02 -0400 Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Sun, 25 Apr 2004 15:24:01 -0700 Received: from 4.171.150.25 by BAY3-DAV78.phx.gbl with DAV; Sun, 25 Apr 2004 22:24:01 +0000 X-Originating-IP: [4.171.150.25] X-Originating-Email: [lors01@msn.com] X-Sender: lors01@msn.com From: "Tracy Crook" To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] Re: FW: Sad story Date: Sun, 25 Apr 2004 18:24:00 -0400 MIME-Version: 1.0 X-Mailer: MSN Explorer 7.02.0011.2700 Content-Type: multipart/alternative; boundary="----=_NextPart_001_0003_01C42AF2.7A9B3220" Message-ID: X-OriginalArrivalTime: 25 Apr 2004 22:24:01.0524 (UTC) FILETIME=[028B4B40:01C42B14] ------=_NextPart_001_0003_01C42AF2.7A9B3220 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable On 4/24/04 7:53 PM, "Tracy Crook" wrote: It's possible I misunderstood the explanation but the theory of why this= happened seems unlikely. The sudden expansion of coolant would have to = be incredibly fast to cause an overpressure due to not being able to get = out through the overflow tube fast enough. =20 =20 Tracy =20 I just learned it was a =C2=BC=E2=80=9D line; i.d about 1/8=E2=80=9D. Tr= ying to squirt a pint or more through that in; what; less than a minute? = That could do it. I currently have a =C2=BC=E2=80=9D line on mine as an = overflow from the pressure bottle. The pressure would release from the c= ap (through the upper gasket) but I would lose coolant in a similar scena= rio. I=E2=80=99m going to rework that to a 3/8=E2=80=9D. That will give= 4 times the flow area. Al My overflow line is also 1/4" OD with an ID of about .15" (actually in t= wo parts, 1/4 ID for about 1 foot then goes to 1/4" OD for another 2 feet= ) Most of the expansion occurs during warmup which usually takes about= 3 - 4 minutes. Anything is possible I guess but I'm not planning on ch= anging it. Tracy ------=_NextPart_001_0003_01C42AF2.7A9B3220 Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable

<= DIV>

On 4/24/04= 7:53 PM, "Tracy C= rook" <lors01@msn.com> wrote:

It's possible I misund= erstood the explanation but the theory of why this happened seems unlikel= y. The sudden expansion of coolant would have to be incredibly fast= to cause an overpressure due to not being able to get out through the ov= erflow tube fast enough.

Tracy

I just learned it was a =C2=BC=E2= =80=9D line; i.d about 1/8=E2=80=9D. Trying to squirt a pint or mor= e through that in; what; less than a minute? That could do it. I cu= rrently have a =C2=BC=E2=80=9D line on mine as an overflow from the press= ure bottle. The pressure would release from the cap (through the up= per gasket) but I would lose coolant in a similar scenario. I=E2=80= =99m going to rework that to a 3/8=E2=80=9D. That will give 4 times= the flow area.

Al

My overflow line is also 1/4= " OD with an ID of about .15" (actually in two parts, 1/4 ID for ab= out 1 foot then goes to 1/4" OD for another 2 feet.) Most of = the expansion occurs during warmup which usually takes about 3 - 4 minute= s. Anything is possible I guess but I'm not planning on chang= ing it.

Tracy

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