X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 08 Nov 2007 09:07:48 -0500 Message-ID: X-Original-Return-Path: Received: from ndmsbar04.ndc.nasa.gov ([192.149.131.174] verified) by logan.com (CommuniGate Pro SMTP 5.2c1) with ESMTP id 2460445 for lml@lancaironline.net; Wed, 07 Nov 2007 15:27:54 -0500 Received-SPF: none receiver=logan.com; client-ip=192.149.131.174; envelope-from=michael.s.reinath@nasa.gov Received: from ndmsxgw04.ndc.nasa.gov (ndmsxgw04.ndc.nasa.gov [129.166.9.162]) by ndmsbar04.ndc.nasa.gov (Spam Firewall) with ESMTP id 219444DF763 for ; Wed, 7 Nov 2007 14:27:12 -0600 (CST) Received: from ndmsxgw04.ndc.nasa.gov (ndmsxgw04.ndc.nasa.gov [129.166.9.162]) by ndmsbar04.ndc.nasa.gov with ESMTP id XdFUMxfJ3SHU8rzo for ; Wed, 07 Nov 2007 14:27:12 -0600 (CST) Received: from NDMSEVS34B.ndc.nasa.gov ([129.166.9.32]) by ndmsxgw04.ndc.nasa.gov with Microsoft SMTPSVC(6.0.3790.1830); Wed, 7 Nov 2007 14:27:12 -0600 Received: from 129.166.9.16 ([129.166.9.16]) by NDMSEVS34B.ndc.nasa.gov ([129.166.9.8]) via Exchange Front-End Server mail02.ndc.nasa.gov ([129.166.9.176]) with Microsoft Exchange Server HTTP-DAV ; Wed, 7 Nov 2007 20:27:11 +0000 User-Agent: Microsoft-Entourage/11.3.6.070618 X-Original-Date: Wed, 07 Nov 2007 12:27:10 -0800 Subject: Re: LNC2 Hyd Chirp From: "Reinath, Michael" X-Original-To: X-Original-Message-ID: Thread-Topic: Re: LNC2 Hyd Chirp Thread-Index: AcghfJKk0TVG3I1vEdyC5gADkxkwcA== Mime-version: 1.0 Content-type: text/plain; charset="US-ASCII" Content-transfer-encoding: 7bit X-OriginalArrivalTime: 07 Nov 2007 20:27:12.0028 (UTC) FILETIME=[93DA55C0:01C8217C] I also can report that my LNC2 hydraulic gear system functions without problems. I do not see the pressure rise that people have described in both the up and down circuits at the same time. On a hot day, I will see the pressure rise in the down circuit when the plane is sitting in the sun with the gear down. I do not, however, see the high-side pressure go up under those conditions. I have a little over 800 hours on the plane now. During that time, I have had to rebuild one door cylinder, and two main cylinders. My pump usually chirps only once on a long flight after the fluid has cooled. I installed a Swagelok dump valve when I built the system. This is the valve we talked about on the LML in the past. Otherwise, the rest of the system is stock. Mike Reinath N3602M at 805 hrs TT San Jose, CA (RHV)