X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from relay04.roc.ny.frontiernet.net ([66.133.182.167] verified) by logan.com (CommuniGate Pro SMTP 4.3.4) with ESMTP id 1006475 for flyrotary@lancaironline.net; Sat, 18 Jun 2005 19:58:59 -0400 Received-SPF: pass receiver=logan.com; client-ip=66.133.182.167; envelope-from=canarder@frontiernet.net Received: from filter05.roc.ny.frontiernet.net (filter05.roc.ny.frontiernet.net [66.133.183.72]) by relay04.roc.ny.frontiernet.net (Postfix) with ESMTP id 507E93582E7 for ; Sat, 18 Jun 2005 23:58:14 +0000 (UTC) Received: from relay04.roc.ny.frontiernet.net ([66.133.182.167]) by filter05.roc.ny.frontiernet.net (filter05.roc.ny.frontiernet.net [66.133.183.72]) (amavisd-new, port 10024) with LMTP id 23597-05-35 for ; Sat, 18 Jun 2005 23:58:14 +0000 (UTC) Received: from [127.0.0.1] (67-137-93-70.dsl2.cok.tn.frontiernet.net [67.137.93.70]) by relay04.roc.ny.frontiernet.net (Postfix) with ESMTP id C1CAE3580F5 for ; Sat, 18 Jun 2005 23:58:13 +0000 (UTC) Message-ID: <42B4B513.5000407@frontiernet.net> Date: Sat, 18 Jun 2005 18:58:11 -0500 From: Jim Sower User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7) Gecko/20040514 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: FW: Do Not Use Auto Brake Fluid References: In-Reply-To: Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Antivirus: avast! (VPS 0524-6, 06/18/2005), Outbound message X-Antivirus-Status: Clean X-Virus-Scanned: by amavisd-new-20040701 (2.0) at filter05.roc.ny.frontiernet.net <... Mil-H-5606 is a mineral based hydraulic oil ...> I seem to recall that (back in the day ...) the tactical jets I flew used that brake fluid. We landed at >125 kts, tire pressures ~250 psi and as long as you didn't break a line you were OK. Did NOT use Al lines between strut and caliper :o) Could that be the problem? As best I recall that far back ... Jim S. WALTER B KERR wrote: >On Sat, 18 Jun 2005 17:11:55 -0400 "Ian Dewhirst" >writes: > > >>Thanks Ed, >> >>I have been following the discussion and your post prompted me to >>see what >>aircraft brake fluid was all about. For those who haven't bothered >>to >>google this, Mil-H-5606 is a mineral based hydraulic oil (unlike >>brake fluid >>which is glycol or silicone based) with a flashpoint of 284 degrees >>Fahrenheit. Hmmm, no wonder people have brake fires. The up side >>is it is >>pretty much the same price as DOT-X. >> >>Anybody have an idea why hydraulic oil is chosen? I know hydraulic >>oil is >>used in heavy equipment to apply the brakes, I think the simple >>reason in >>that application is that there is a lot of it pressurized and >>available. I >>trust that is not the reason it is used in a C172? -- Ian >> >>P.S. Good Luck Ed! >> >> Do NOT use automotive brake fluid in aircraft brake systems. >>Incompatible >>with the seal materials. See information at >>http://www.groveaircraft.com/brake_info.html >> >>Ed A >> >> > >======================================================= >A friend of mine says ATF is the same as aircraft brake fluid. Ran it >over 400 hours without any problem in my RV6A. He is an EAA tech adviser >and another engineer from Pratt-Whitney. Never tried to check it out, >just went on blind faith. I have aircraft brake fluid in the 9A, just >because it was handy. > >Bernie > > > >>> Homepage: http://www.flyrotary.com/ >>> Archive: http://lancaironline.net/lists/flyrotary/List.html >>> >>> > > > >