X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from smtp108.sbc.mail.mud.yahoo.com ([68.142.198.207] verified) by logan.com (CommuniGate Pro SMTP 4.3.5) with SMTP id 1024270 for flyrotary@lancaironline.net; Mon, 27 Jun 2005 23:13:04 -0400 Received-SPF: none receiver=logan.com; client-ip=68.142.198.207; envelope-from=dcarter@datarecall.net Received: (qmail 67294 invoked from network); 28 Jun 2005 03:12:17 -0000 Received: from unknown (HELO Davidscmptr) (dcarter11@sbcglobal.net@65.70.248.228 with login) by smtp108.sbc.mail.mud.yahoo.com with SMTP; 28 Jun 2005 03:12:16 -0000 Message-ID: <104d01c57b8f$298d6800$6401a8c0@ip.net> Reply-To: "David Carter" From: "David Carter" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Coolant Leak Date: Mon, 27 Jun 2005 22:12:05 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_104A_01C57B65.406C9B60" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1409 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 This is a multi-part message in MIME format. ------=_NextPart_000_104A_01C57B65.406C9B60 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Ford Contour (about 1999 or 2000) also had the "pressurized expansion = tank"/"pressurized header tank", with NO cap on radiator - you filled by = removing the pressure cap on the "expansion/reservoir/header tank" and = it drained out the bottom to a T in the line from bottom of radiator to = the water pump, and filled the radiator and engine block from bottom up, = purging (most? air. That is the way I'm going. The air on top of coolant in the "pressurized see-thru tank was = provided plenty of "cup of air" on top. David ----- Original Message -----=20 From: Al Gietzen=20 To: Rotary motors in aircraft=20 Sent: Monday, June 27, 2005 12:27 AM Subject: [FlyRotary] Re: Coolant Leak I'm sorry Georges, I don't understand your statement. All auto cooling sys I'm familiar with have rad cap on top of radiator. = They are designed to have no air in the cooling system. Shortly after = you start up the car, coolant flows from cap 14psi valve to overflow = bottle. This pressure increase is entirely due to coolant expansion due = to heat. When you shut car off, the pressure drop in the radiator draws = in coolant from cap 1 psi valve connected to overflow bottle back into = the radiator. Thus the radiator is always full to top. Al W. Mercedes, Volkswagon, Volvo (to name a few) have/had radiators with no = cap, connected to an expansion tank that you fill about half way. The = expansion tank - higher than the top of the rad - has the 13-15 psi = cap. FWIW; Al G. ------=_NextPart_000_104A_01C57B65.406C9B60 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Ford Contour (about 1999 or 2000) also = had the=20 "pressurized expansion tank"/"pressurized header tank", with NO cap on = radiator=20 - you filled by removing the pressure cap on the = "expansion/reservoir/header=20 tank" and it drained out the bottom to a T in the line from bottom of = radiator=20 to the water pump, and filled the radiator and engine block from bottom = up,=20 purging (most? air.  That is the way I'm going.
    The air on top of = coolant in the=20 "pressurized see-thru tank was provided plenty of "cup of air" on=20 top.
 
David
 
----- Original Message -----=20
From: Al = Gietzen
Sent: Monday, June 27, 2005 12:27 AM
Subject: [FlyRotary] Re: Coolant Leak

I'm sorry Georges, I don't = understand your statement.

All auto cooling sys I'm = familiar=20 with have rad cap on top of radiator. They are designed to have no air = in the=20 cooling system. Shortly after you start up the car, coolant = flows from=20 cap 14psi valve to overflow bottle. This pressure increase is = entirely due=20 to coolant expansion due to heat. When you shut car off, the pressure = drop in=20 the radiator draws in coolant from cap 1 psi valve connected to=20  overflow bottle back into the radiator. Thus the radiator is = always full=20 to top.

 

Al=20 W.

 

Mercedes, = Volkswagon,=20 Volvo (to name a few) have/had radiators with no cap, connected to an = expansion=20 tank that you fill about half way.  The expansion tank =96 higher = than the=20 top of the rad -  has the 13-15 psi cap.

 

FWIW;

 

Al=20 G.

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