Return-Path: Sender: (Marvin Kaye) To: lml@lancaironline.net Date: Fri, 12 Mar 2004 01:13:49 -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 4.1.8) with ESMTP id 3074992 for lml@lancaironline.net; Thu, 11 Mar 2004 22:45:28 -0500 Received: from asdmngwia.mpls.udlp.com (asdmngwia.mpls.udlp.com [10.1.62.22]) by mta-out-1.udlp.com (8.12.10/8.12.10) with ESMTP id i2C2H0Bb020354 for ; Thu, 11 Mar 2004 20:17:00 -0600 Received: from DM-MN-06-MTA by asdmngwia.mpls.udlp.com with Novell_GroupWise; Thu, 11 Mar 2004 21:45:24 -0600 X-Original-Message-Id: X-Mailer: Novell GroupWise Internet Agent 6.0.1 X-Original-Date: Thu, 11 Mar 2004 21:45:08 -0600 From: "Christopher Zavatson" X-Original-To: Subject: [LML] Re: Possible Gear Hydraulic System Vapor Lock Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Rob I am not familiar with the Legacy hydraulic system at all, so I don't know = what knowledge transfers and what does not. The schematic for the 360 = pump actually shows the return to reservoir passing through a very low = pressure check valve. I don't recall seeing this installed on my pumps = and find no reference to it in the parts list. Having an accumulator in the (360) system would be nice in terms of both = increased leak tolerance and provides a softer cutoff as you mention. The = dynamics are quite interesting. I use a second pump on a test stand for = trouble shooting and checking overhauled cylinders before placing them = back in the plane. The relief valve settings and pressure switch settings = have to be quite different to obtain the same final system pressures. The = test bench plumbing is short and stiff. The plane on the other hand is = much softer (with 30 feet of tubing and hose) takes much longer to reach = equilibrium. Chris