X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sat, 26 Jan 2013 02:07:10 -0500 Message-ID: X-Original-Return-Path: Received: from nm16-vm0.access.bullet.mail.sp2.yahoo.com ([98.139.44.166] verified) by logan.com (CommuniGate Pro SMTP 6.0.1) with ESMTPS id 6030093 for lml@lancaironline.net; Fri, 25 Jan 2013 20:55:42 -0500 Received-SPF: neutral receiver=logan.com; client-ip=98.139.44.166; envelope-from=browncc1@verizon.net Received: from [98.139.44.102] by nm16.access.bullet.mail.sp2.yahoo.com with NNFMP; 26 Jan 2013 01:55:08 -0000 Received: from [98.138.85.46] by tm7.access.bullet.mail.sp2.yahoo.com with NNFMP; 26 Jan 2013 01:55:08 -0000 Received: from [127.0.0.1] by smtp103.vzn.mail.ne1.yahoo.com with NNFMP; 26 Jan 2013 01:55:08 -0000 X-Yahoo-Newman-Id: 125048.5392.bm@smtp103.vzn.mail.ne1.yahoo.com X-Yahoo-Newman-Property: ymail-3 X-YMail-OSG: Ann6Q0EVM1n5DPZ107roUDcp5ze29CLxg1Uz6RkPaVm2GNW 794QEKmDYXLSkU6FuVnHX5m7IIH8ru81FsMiZ67hdueE_U3XF1GZjmsEt2hp wKUd09Kx4TTDK20YCW2s7tu6syZEDSnskkUWUo.YXGIDvN9C_P6_WH6G08aH bPBjjMxOj8DYttK9ItmfUgxUhcUWNGnZqKaDGL62FUt_md60sneo7bI8asj. dsGCFkL5C1aGQqPdcVWbzi70xmCagCL04Ew_lVmBTirlSuIC_WlZLjy3B0MA fblo7ViLNLbTdssC3kc.427RsCfdCRJ_8WJIqnwOwTTOQywM9z.dmYvtzvPi xrd13r07bd4X5qRyp1LsV182diFpHmj7nEElJLN99QkPLnJAwSUG3JYmz4lU r8H5TVontCLhIwEKIejtopFIYio8u5TWHrM3S9gL2zOhQegTBnwv0kgE4_Bb 7_Rk7DvBQ3oxEdGSzW.DQyR3FzaE- X-Yahoo-SMTP: F49l9g6swBC0R9n8vJIbm7Tf3P8Xlmia8rHIwTlO__Ml Received: from chass-imac-2.home (browncc1@72.64.105.53 with plain) by smtp103.vzn.mail.ne1.yahoo.com with SMTP; 26 Jan 2013 01:55:08 +0000 UTC From: Charles Brown Mime-Version: 1.0 (Apple Message framework v1085) Content-Type: multipart/alternative; boundary=Apple-Mail-3-753500859 Subject: Re: [LML] Re: Thermal influence on Hydraulic Pressure X-Original-Date: Fri, 25 Jan 2013 19:55:06 -0600 In-Reply-To: X-Original-To: "Lancair Mailing List" References: X-Original-Message-Id: <08521253-8FFD-48B3-BCFF-A82A7DC15350@verizon.net> X-Mailer: Apple Mail (2.1085) --Apple-Mail-3-753500859 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii This has happened to me even at the beginning of a flight, if the temps = in the hangar have gone from cold on a previous day, to warm on flight = day. I guess cold temps shrink the fluid and suck more from the = reservoir into the lines, and when it warms, the pressure builds on both = sides of the system, so that the "up" and "down" pressure switches are = both open and the gear won't move until I pop the bleed valve. Nasty when the gear won't retract just after blasting off into a low = overcast. Charley Brown Legacy #299 200 hr On Jan 25, 2013, at 7:23 AM, randy snarr wrote: . I dont like having to open the dump valve but it is necessary once in = a while especially when it is cold. The pressures on both sides of the = system climb due to the engine heat and the gear sometimes will not move = without dumping the pressure. --Apple-Mail-3-753500859 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=us-ascii

Nasty when the gear won't retract just = after blasting off into a low overcast.

Charley = Brown

Legacy #299 200 hr

On Jan 25, = 2013, at 7:23 AM, randy snarr wrote:

. I dont like having to open the dump valve but it = is necessary once in a while especially when it is cold. The pressures = on both sides of the system climb due to the engine heat and the gear = sometimes will not move without dumping the pressure.

= --Apple-Mail-3-753500859--