X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imr-ma04.mx.aol.com ([64.12.206.42] verified) by logan.com (CommuniGate Pro SMTP 5.4c2) with ESMTP id 4920694 for flyrotary@lancaironline.net; Thu, 24 Mar 2011 12:34:39 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.12.206.42; envelope-from=Lehanover@aol.com Received: from imo-da04.mx.aol.com (imo-da04.mx.aol.com [205.188.169.202]) by imr-ma04.mx.aol.com (8.14.1/8.14.1) with ESMTP id p2OGY0BR025123 for ; Thu, 24 Mar 2011 12:34:00 -0400 Received: from Lehanover@aol.com by imo-da04.mx.aol.com (mail_out_v42.9.) id q.cfa.8390fdcd (45277) for ; Thu, 24 Mar 2011 12:33:59 -0400 (EDT) Received: from magic-d24.mail.aol.com (magic-d24.mail.aol.com [172.19.146.158]) by cia-mc03.mx.aol.com (v129.9) with ESMTP id MAILCIAMC037-b0dd4d8b72766; Thu, 24 Mar 2011 12:33:58 -0400 From: Lehanover@aol.com Message-ID: <1cbf6.48015b44.3abccc76@aol.com> Date: Thu, 24 Mar 2011 12:33:58 EDT Subject: Re: [FlyRotary] On the subject of installations...Coolant Pressure To: flyrotary@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="part1_1cbf6.48015b44.3abccc76_boundary" X-Mailer: 9.0 Security Edition for Windows sub 5382 X-AOL-IP: 72.187.199.116 X-Spam-Flag:NO X-AOL-SENDER: Lehanover@aol.com --part1_1cbf6.48015b44.3abccc76_boundary Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Content-Language: en =20 In a message dated 3/24/2011 12:23:39 P.M. Eastern Daylight Time, =20 bbradburry@bellsouth.net writes: I need some help with figuring out my cooling problems.=20 Just so it doesn=E2=80=99t get lost in the following BS, I need to state= that I=20 think the problem is related to the coolant pressure. It seems to me to= be=20 way too high. I am beginning to think that the coolant is somehow partia= lly=20 blocked.=20 There is the pressure due to the expansion of the liquid governed by the= =20 cap, and the dynamic head, or difference between the intake and outlet of= the=20 pump, and flow restrictions in the system, which goes up and down with=20 pump RPM. =20 This pressure difference changes with RPM, air content of the coolant, =20 temperature of the coolant, and formula of the coolant. All normal stuff. =20 Lynn E. Hanover --part1_1cbf6.48015b44.3abccc76_boundary Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Content-Language: en <= FONT id=3Drole_document color=3D#000000 size=3D2 face=3DArial>

In a message dated 3/24/2011 12:23:39 P.M. Eastern Daylight Time,=20 bbradburry@bellsouth.net writes:

I need some= help with=20 figuring out my cooling problems.

Just so it do= esn=E2=80=99t=20 get lost in the following BS, I need to state that I think the problem= is=20 related to the coolant pressure. It seems to me to be way too=20 high. I am beginning to think that the coolant is somehow partiall= y=20 blocked.

There is the pressure due to the expansion of the liquid governed by= the=20 cap, and the dynamic head, or difference between the intake and outlet of= the=20 pump, and flow restrictions in the system, which goes up and down with pum= p=20 RPM.

This pressure difference changes with RPM, air content of the coolant= ,=20 temperature of the coolant, and formula of the coolant. All normal stuff.<= /DIV>

Lynn E. Hanover

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