X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [199.185.220.240] (HELO priv-edtnes46.telusplanet.net) by logan.com (CommuniGate Pro SMTP 5.0.4) with ESMTP id 883548 for flyrotary@lancaironline.net; Thu, 15 Dec 2005 12:54:23 -0500 Received-SPF: pass receiver=logan.com; client-ip=199.185.220.240; envelope-from=echolakeresort@telus.net Received: from echolake-cc8a26 ([207.194.127.32]) by priv-edtnes46.telusplanet.net (InterMail vM.6.01.04.04 201-2131-118-104-20050224) with ESMTP id <20051215175333.JOTB6842.priv-edtnes46.telusplanet.net@echolake-cc8a26> for ; Thu, 15 Dec 2005 10:53:33 -0700 MIME-Version: 1.0 Message-Id: <43A1AD97.000001.03820@ECHOLAKE-CC8A26> Date: Thu, 15 Dec 2005 09:53:27 -0800 (Pacific Standard Time) Content-Type: Multipart/Alternative; boundary="------------Boundary-00=_3DWJQL80000000000000" X-Mailer: IncrediMail (4502089) From: "Echo Lake Fishing Resort (Georges Boucher)" References: To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] Re: Radiator Expansion Tank X-FID: FLAVOR00-NONE-0000-0000-000000000000 X-Priority: 3 --------------Boundary-00=_3DWJQL80000000000000 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi! Todd =0D I'm not getting it, what stops the 15lb cap relief valve from opening at its rated pressure? Even if it dumps into the 22lb reservoir the pressure still can't be greater than 22lbs. What am I missing?=0D Georges B.=0D =0D -------Original Message-------=0D =0D From: Todd Bartrim=0D Date: 12/15/05 05:50:21=0D To: Rotary motors in aircraft=0D Subject: [FlyRotary] Re: Radiator Expansion Tank=0D =0D Todd=0D Can you explain how using two pressure caps (one 22lb & one 15 lb) add up= to a possible total system pressure of 37lbs. I can only see it as a max of 22lbs,=0D Georges B. =0D =0D Hi Georges;=0D The rad caps are differential meaning that they will hold back their rated pressure above the pressure seen at the outlet. So if the the first cap produces a 15 psi increase over atmospheric pressure, then the second cap which has it's outlet plumbed to the 15 psi reservoir will further increase this by it's rated pressure (22 psi in this case) to give a tota= l of 37 psi.=0D At least that's the way I see it.=0D =0D Todd=0D =0D =20 --------------Boundary-00=_3DWJQL80000000000000 Content-Type: Text/HTML; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Hi! Todd
I'm not getting it, what stops the 15lb cap relief valve from &= nbsp;opening at its rated pressure? Even if it dumps into the 22lb reserv= oir the pressure still can't be greater than 22lbs. What am I missing?
Georges B.
 
-------Original Message-------
 
Date: 12/15/05 05:= 50:21
Subject: [FlyRotar= y] Re: Radiator Expansion Tank
 
Todd
Can you explain how using two pressure caps (one 22lb & one 15 l= b) add up to a possible total system pressure of 37lbs. I can only see it= as a max of 22lbs,
Georges B. 
 
Hi Georg= es;
  &= nbsp; The rad caps are differential meaning that they will hold back thei= r rated pressure above the pressure seen at the outlet. So if the the fir= st cap produces a 15 psi increase over atmospheric pressure, then the sec= ond cap which has it's outlet plumbed to the 15 psi reservoir will furthe= r increase this by it's rated pressure (22 psi in this case) to give a to= tal of 37 psi.
  &= nbsp; At least that's the way I see it.
  &= nbsp;
Todd
 
 
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