X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [24.25.9.100] (HELO ms-smtp-01-eri0.southeast.rr.com) by logan.com (CommuniGate Pro SMTP 5.0.3) with ESMTP id 863218 for flyrotary@lancaironline.net; Sun, 04 Dec 2005 21:22:48 -0500 Received-SPF: pass receiver=logan.com; client-ip=24.25.9.100; envelope-from=echristley@nc.rr.com Received: from [192.168.0.253] (cpe-066-057-036-199.nc.res.rr.com [66.57.36.199]) by ms-smtp-01-eri0.southeast.rr.com (8.12.10/8.12.7) with ESMTP id jB52M1We028099 for ; Sun, 4 Dec 2005 21:22:01 -0500 (EST) Message-ID: <4393A449.8090602@nc.rr.com> Date: Sun, 04 Dec 2005 21:22:01 -0500 From: Ernest Christley User-Agent: Mozilla Thunderbird 1.0.2-6 (X11/20050513) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Rotary motors in aircraft Subject: fuel/brake lines fittings References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Scanned: Symantec AntiVirus Scan Engine Ed Anderson wrote: > 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, can I get you to give me 0.03 worth? 8*) I've order 3/16 (-3) aluminum tube for the 'middle' runs that will interface with well anchored bulkhead at both ends. The ends will obviously have to be flared connections. Are you saying there are aluminum fittings that will interface the -3 flared tube with -4 connections? -- 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)."