X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml Date: Mon, 20 Nov 2006 18:50:43 -0500 Message-ID: X-Original-Return-Path: Received: from mta-out-1.udlp.com ([207.109.1.8] verified) by logan.com (CommuniGate Pro SMTP 5.1.2) with ESMTP id 1587216 for lml@lancaironline.net; Mon, 20 Nov 2006 18:26:09 -0500 Received-SPF: none receiver=logan.com; client-ip=207.109.1.8; envelope-from=Christopher.Zavatson@baesystems.com Received: from mnexch01.MSGDOMAIN.MPLS.UDLP.COM ([10.66.62.99]) by mta-out-1.udlp.com (8.13.6/8.13.6) with ESMTP id kAKMWeX4030979 for ; Mon, 20 Nov 2006 16:32:40 -0600 Received: from smtp.udlp.com ([10.66.69.54] RDNS failed) by mnexch01.MSGDOMAIN.MPLS.UDLP.COM with Microsoft SMTPSVC(6.0.3790.211); Mon, 20 Nov 2006 17:18:15 -0600 Received: from DM-MN-06-MTA by smtp.udlp.com with Novell_GroupWise; Mon, 20 Nov 2006 17:25:27 -0600 X-Original-Message-Id: X-Mailer: Novell GroupWise Internet Agent 6.5.6 X-Original-Date: Mon, 20 Nov 2006 17:25:17 -0600 From: "Christopher Zavatson" X-Original-To: Subject: Re: [LML] Electrical /Hydraulic system questions lancair 235/320 Mime-Version: 1.0 Content-Type: multipart/alternative; boundary="=__Part3B1F114D.0__=" X-OriginalArrivalTime: 20 Nov 2006 23:18:15.0712 (UTC) FILETIME=[28143A00:01C70CFA] --=__Part3B1F114D.0__= Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Randy, The pressure rise in the high side with increasing OATs is normal. Rising pressure in the low side is not. It sounds like the back pressure circuit is not open to allow expanding fluid in the low side to flow easily back to the reservoir. A few questions: What is the pressure in the down side circuit during a gear retraction? You reported a 0 reading in the low side after takeoff. Does the pressure bleed back down to zero after retraction or is it zero during the entire retraction sequence. Also, do you know what vintage your pump is? Chris Chris Zavatson N91CZ 360std www.N91CZ.com --=__Part3B1F114D.0__= Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Content-Description: HTML
Randy,
The pressure rise in the high side with increasing OATs is normal.&nbs= p; Rising pressure in the low side is not. 
It sounds like the back pressure circuit is not open to allow = expanding fluid in the low side to flow easily back to the reservoir. = A few questions:  What is the pressure in the down side circuit = during a gear retraction?  You reported a 0 reading in the low side = after takeoff.  Does the pressure bleed back down to zero after = retraction or is it zero during the entire retraction sequence.  = Also, do you know what vintage your pump is?   
Chris
 
 
 
 
Chris Zavatson
N91CZ
360std

 
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