X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 2 [X] Return-Path: Sender: To: lml@lancaironline.net Date: Wed, 18 Apr 2007 10:39:45 -0400 Message-ID: X-Original-Return-Path: Received: from smtp112.sbc.mail.mud.yahoo.com ([68.142.198.211] verified) by logan.com (CommuniGate Pro SMTP 5.1.8) with SMTP id 1991701 for lml@lancaironline.net; Wed, 18 Apr 2007 10:13:17 -0400 Received-SPF: none receiver=logan.com; client-ip=68.142.198.211; envelope-from=lorn@dynacomm.ws Received: (qmail 91965 invoked from network); 18 Apr 2007 14:12:15 -0000 Received: from unknown (HELO ?192.168.0.64?) (lorn@ameritech.net@69.208.117.70 with plain) by smtp112.sbc.mail.mud.yahoo.com with SMTP; 18 Apr 2007 14:12:15 -0000 X-YMail-OSG: 4R.5UNwVM1lkoQGK0wohm5bjXYnef474hIB6ixnxgpLKVJycCyDNwbAS5y2HMzKaFDG..9ocHUHi97FAEuwWMc1Aini1Y7xAVKU970iwCfKfCZw_9pY- Mime-Version: 1.0 (Apple Message framework v752.3) X-Original-To: Lancair List X-Original-Message-Id: Content-Type: multipart/alternative; boundary=Apple-Mail-7-1029839949 From: Lorn H Olsen Subject: Re: Gear Trouble X-Original-Date: Wed, 18 Apr 2007 10:12:15 -0400 X-Mailer: Apple Mail (2.752.3) --Apple-Mail-7-1029839949 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed I can set my plane on jacks for days and have no pressure leak. I can fly for hours and have no pressure leak. But if I fly high, where it is cold, every hour the pump will run for 1/2 of a second (about 300 lbs). The reason for this is that the high pressure side has leaked about 300 lbs of pressure to the low side (or gone done because of the temperature). Most of the time that I fly high for more than 3 hours, the low pressure side has increased enough to stop the pump from running when I put the gear lever down. At this time, I open the dump valve for just a second. The pressure in the low side goes down and the pump comes on. I believe that our activators leak more when cold. Or, it could be that the high pressure side gets so cold that it needs more pressure and the low side also takes the pressure without relief? -- Lorn H. 'Feathers' Olsen, MAA, DynaComm, Corp. 248-345-0500, mailto:lorn@dynacomm.ws LNC2, FB90/92, O-320-D1F, 1,300 hrs, N31161, Y47, SE Michigan --Apple-Mail-7-1029839949 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=US-ASCII I can set my plane on jacks for = days and have no pressure leak. I can fly for hours and have no pressure = leak. But if I fly high, where it is cold, every hour the pump will run = for 1/2 of a second (about 300 lbs). The reason for this is that the = high pressure side has leaked about 300 lbs of pressure to the low side = (or gone done because of the temperature). Most of the time that I fly = high for more than 3 hours, the low pressure side has increased enough = to stop the pump from running when I put the gear lever down. At this = time, I open the dump valve for just a second. The pressure in the low = side goes down and the pump comes on.

I believe that our = activators leak more when cold. Or, it could be that the high pressure = side gets so cold that it needs more pressure and the low side also = takes the pressure without relief?

Lorn H. = 'Feathers' Olsen, MAA, DynaComm, = Corp.

248-345-0500, = mailto:lorn@dynacomm.ws=

LNC2, = FB90/92, O-320-D1F, 1,300 hrs, N31161, Y47, SE = Michigan

= --Apple-Mail-7-1029839949--