X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fed1rmmtao02.cox.net ([68.230.241.37] verified) by logan.com (CommuniGate Pro SMTP 4.3.4) with ESMTP id 990877 for flyrotary@lancaironline.net; Fri, 10 Jun 2005 01:20:59 -0400 Received-SPF: none receiver=logan.com; client-ip=68.230.241.37; envelope-from=ALVentures@cox.net Received: from BigAl ([68.7.14.39]) by fed1rmmtao02.cox.net (InterMail vM.6.01.04.00 201-2131-118-20041027) with ESMTP id <20050610052012.IBXR22430.fed1rmmtao02.cox.net@BigAl> for ; Fri, 10 Jun 2005 01:20:12 -0400 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: Remaining pressure when cold (Re: coolant leak) Date: Thu, 9 Jun 2005 22:20:16 -0700 Message-ID: <000001c56d7c$16339a20$6400a8c0@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C56D41.69D4C220" 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 V6.00.2900.2180 This is a multi-part message in MIME format. ------=_NextPart_000_0001_01C56D41.69D4C220 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Yes, exactly, two pressure caps in series. The second tank is one qt and I keep it empty. The first tank is about a pint and I keep it full. First pressure cap i s 13 psi, and second tank is 20. Pressure sensor (switch only) is on the second tank. The second tank acts as my air spring. (see other post) Dave; I have a similar setup; except I have the higher pressure cap on the first small filler bottle. There can be residual pressure in the second tank because it takes some small pressure to force flow back through the cap on the first tank (at least on my Moroso cap). I haven't noticed any residual pressure in the first tank - except perhaps a bit of negative. BTW; note that the total system pressure can go up to the total of both caps, in your case 33 psi. This may be a bit stressful on hoses and the like. I'm considering whether to just tighten the first cap, and leave the second cap on the first step of the latch. Al ------=_NextPart_000_0001_01C56D41.69D4C220 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Yes, exactly, two pressure caps in = series. The second tank is one qt and I keep it empty. The first tank is about = a pint and I keep it full. First pressure cap i s 13 psi, and second tank = is 20. Pressure sensor (switch only) is on the second = tank.

The second tank acts as my air spring. = (see other post)

Dave;

I have a similar setup; except I = have the higher pressure cap on the first small filler bottle. There = can be residual pressure in the second tank because it takes some small = pressure to force flow back through the cap on the first tank (at least on my Moroso = cap). I haven’t noticed any residual pressure in the first tank – = except perhaps a bit of negative.

BTW; note that the total system = pressure can go up to the total of both caps, in your case 33 psi. This may = be a bit stressful on hoses and the like. I’m considering whether = to just tighten the first cap, and leave the second cap on the first step = of the latch.

Al

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