X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [24.25.9.103] (HELO ms-smtp-04-eri0.southeast.rr.com) by logan.com (CommuniGate Pro SMTP 5.0.3) with ESMTP id 862835 for flyrotary@lancaironline.net; Sun, 04 Dec 2005 11:33:52 -0500 Received-SPF: pass receiver=logan.com; client-ip=24.25.9.103; envelope-from=eanderson@carolina.rr.com Received: from edward2 (cpe-024-074-025-165.carolina.res.rr.com [24.74.25.165]) by ms-smtp-04-eri0.southeast.rr.com (8.12.10/8.12.7) with SMTP id jB4GX41u003180 for ; Sun, 4 Dec 2005 11:33:05 -0500 (EST) Message-ID: <000901c5f8f0$1f3a2170$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: fuel/brake lines Date: Sun, 4 Dec 2005 11:31:04 -0500 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 X-Virus-Scanned: Symantec AntiVirus Scan Engine No question you normally want to use fittings of matching metals. However, there has been some discussion about very small aluminum fittings (such as -3) not having much reserve strength (compared to larger aluminum fittings and of course steel fittings). The Cleveland calipers I use come tapped for an (AN-4) - 1/8NPT fitting. I use this fitting to screw into the caliper. Then I use -4 Steel hose Fittings that mates with a -3 brake hose (strange I know, but they make them). Since the standard fittings for the Clevelands are the above mentioned AN -4 - 1/8 NPT fittings, I use the aluminum -4 fittings (NPT on one end) to screw into the aluminum calipers and screw the -4 steel hose fitting onto the AN portion of the caliper fitting. All the brake fittings on the RVs are -4(which I already had installed), so I stuck with that (except for the -3 hose). You can certainly use -4 lines, but I found them to feel a bit mushy for my taste and prefer the smaller -3 hose. My 0.02 worth Ed ----- Original Message ----- From: "al p wick" To: "Rotary motors in aircraft" Sent: Sunday, December 04, 2005 10:15 AM Subject: [FlyRotary] Re: fuel/brake lines > You have aluminum lines, aluminum housing? Then I'd use aluminum > fittings. > > > -al wick > Artificial intelligence in cockpit, Cozy IV powered by stock Subaru 2.5 > N9032U 200+ hours on engine/airframe from Portland, Oregon > Prop construct, Subaru install, Risk assessment, Glass panel design info: > http://www.maddyhome.com/canardpages/pages/alwick/index.html > > > On Fri, 02 Dec 2005 21:48:14 -0500 Ernest Christley > writes: >> >> The next question is "steel or aluminum brake/fuel fittings?". The >> >> steel is obviously stronger, but wouldn't there be an increased risk >> of >> dissimilar metal corrosion? >> >> -- >> This is by far the hardest lesson about freedom. It goes against >> instinct, and morality, to just sit back and watch people make >> mistakes. We want to help them, which means control them and their >> decisions, but in doing so we actually hurt them (and ourselves)." >> >> >> -- >> Homepage: http://www.flyrotary.com/ >> Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/ >> >> > > > -al wick > Artificial intelligence in cockpit, Cozy IV powered by stock Subaru 2.5 > N9032U 200+ hours on engine/airframe from Portland, Oregon > Prop construct, Subaru install, Risk assessment, Glass panel design info: > http://www.maddyhome.com/canardpages/pages/alwick/index.html > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/ >