Return-Path: Received: from fep03-mail.bloor.is.net.cable.rogers.com ([66.185.86.73] verified) by logan.com (CommuniGate Pro SMTP 4.2b1) with ESMTP id 3155902 for flyrotary@lancaironline.net; Sat, 10 Apr 2004 08:16:07 -0400 Received: from CR754193A ([24.43.221.42]) by fep03-mail.bloor.is.net.cable.rogers.com (InterMail vM.5.01.05.12 201-253-122-126-112-20020820) with ESMTP id <20040410121604.YTDU396979.fep03-mail.bloor.is.net.cable.rogers.com@CR754193A> for ; Sat, 10 Apr 2004 08:16:04 -0400 From: "Neil Kruiswyk" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: Dave's pump problems and Rotor Poll Date: Sat, 10 Apr 2004 08:16:10 -0400 Message-ID: <000e01c41ef5$9c364680$6402a8c0@CR754193A> MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_NextPart_000_000F_01C41ED4.1524A680" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.2616 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Authentication-Info: Submitted using SMTP AUTH LOGIN at fep03-mail.bloor.is.net.cable.rogers.com from [24.43.221.42] using ID at Sat, 10 Apr 2004 08:16:04 -0400 This is a multi-part message in MIME format. ------=_NextPart_000_000F_01C41ED4.1524A680 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Dave, I was looking at the sketch of your cooling system and there are a couple of areas which may give your grief. (Perhaps the sketch isn't a true representation of your installation which would make these comments mute). There are 2 areas where air can trap that should be dealt with. I've edited your GIF and draw boxes around the two areas. Above the red line, air will be trapped. The radiator section would seem to be the biggest issue. Is there a way you could route the top rad connection so that it maintains an up-hill path the WP? (shown in blue) If not, installing bleed valves for filling the system, or, a bleed line back to the header tank would help things out. My 2 cents. Neil Kruiswyk (I've had as many cooling systems as Ed has had intake manifolds. 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