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 4.3.5) with ESMTP id 1020393 for flyrotary@lancaironline.net; Fri, 24 Jun 2005 11:50:56 -0400 Received-SPF: pass receiver=logan.com; client-ip=24.25.9.103; envelope-from=eanderson@carolina.rr.com Received: from edward2 (cpe-065-188-083-049.carolina.res.rr.com [65.188.83.49]) by ms-smtp-04-eri0.southeast.rr.com (8.12.10/8.12.7) with SMTP id j5OFo9L5029629 for ; Fri, 24 Jun 2005 11:50:10 -0400 (EDT) Message-ID: <000901c578d4$67c830e0$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Brake Line Incident Photos Date: Fri, 24 Jun 2005 11:50:11 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0006_01C578B2.E086F560" 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 This is a multi-part message in MIME format. ------=_NextPart_000_0006_01C578B2.E086F560 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Excellent points, Bill Needless to say, I totally agree. I originally had the nylon hose (as = called for) for some of the inside lines - until I pulled one off its = furell just by tugging on it. Have had folks report that the nylon hose = when heated tends to swell and cause leaks. But, in any case, I am = using flexible stainless steel braided hose for the entire length from = master cylinder to brake piston. Easy to see how an aircraft could easily be consumed with the wing tanks = just ahead of the wheel assembly. Ed ----- Original Message -----=20 From: WRJJRS@aol.com=20 To: Rotary motors in aircraft=20 Sent: Friday, June 24, 2005 11:27 AM Subject: [FlyRotary] Re: Brake Line Incident Photos In a message dated 6/24/2005 7:19:21 AM Pacific Standard Time, = eanderson@carolina.rr.com writes: David, it was aluminum tubing which is what's called for on the = RV-6A brake system. However, in hindsight - thinking about the low = fatigue life of flexing aluminum, I think there are better choices. Ed Ed, As an ex-racer I must admit that I have been constantly appalled by = the state of GA aircraft braking systems! I have done programs on brake = systems at my EAA chapter advising against the solid tube brake setups. = The only thing I find worse is the nylon tubing included in some of the = kits! I would not use these systems on a kiddie go-kart. I have = constantly been told by many of my fellow builders that the pressure in = aircraft brakes is "low". Or aircraft brakes don't see as much action as = car or motorcycle brakes. My response has always been, "It only takes = one failure to ruin your whole day." I am truly sorry you had to be the = poster boy for what I've been harping about.=20 You can use solid tube for almost the entire system. One needs only a = short flex line on both ends to ensure proper operation. Earls and = aeroquip both make a transition fitting so you can run the ss braided = line for only a foot or so on each end. Don't compromise here guys! Bill = Randolf the guy who flew his RV-8 around the world was stranded in = Tahiland for 2 weeks due to an almost identical brake failure. He had = the same brake fire, and when the plane spun on the runway he lost both = tires. (standard gear) Be careful with the brakes. Bill Jepson ------=_NextPart_000_0006_01C578B2.E086F560 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Excellent points, Bill
 
Needless to say, I totally agree.  I originally = had the=20 nylon hose (as called for) for some of the inside lines - until I pulled = one off=20 its furell just by tugging on it.  Have had folks report that the = nylon=20 hose when heated tends to swell and cause leaks.  But, in any case, = I am=20 using flexible stainless steel braided hose for the entire length = from=20 master cylinder to brake piston.
 
Easy to see how an aircraft could easily be consumed = with the=20 wing tanks just ahead of the wheel assembly.
 
Ed
----- Original Message -----
From:=20 WRJJRS@aol.com
Sent: Friday, June 24, 2005 = 11:27=20 AM
Subject: [FlyRotary] Re: Brake = Line=20 Incident Photos

In a message dated 6/24/2005 7:19:21 AM Pacific Standard Time, eanderson@carolina.rr.com=20 writes:
David, it was aluminum tubing which is = what's called=20 for on the RV-6A brake system.  However, in hindsight = - thinking=20 about the low fatigue life of flexing aluminum, I think there are = better=20 choices.
 
Ed
Ed,
 As an ex-racer I must admit that I have been constantly = appalled by=20 the state of GA aircraft braking systems! I have done programs on = brake=20 systems at my EAA chapter advising against the solid tube brake = setups. The=20 only thing I find worse is the nylon tubing included in some of the = kits! I=20 would not use these systems on a kiddie go-kart. I have constantly = been told=20 by many of my fellow builders that the pressure in aircraft brakes is = "low".=20 Or aircraft brakes don't see as much action as car or motorcycle = brakes. My=20 response has always been, "It only takes one failure to ruin your = whole day."=20 I am truly sorry you had to be the poster boy for what I've been = harping=20 about.
 You can use solid tube for almost the entire system. One = needs only=20 a short flex line on both ends to ensure proper operation. Earls and = aeroquip=20 both make a transition fitting so you can run the ss braided line for = only a=20 foot or so on each end. Don't compromise here guys! Bill Randolf the = guy who=20 flew his RV-8 around the world was stranded in Tahiland for 2 weeks = due to an=20 almost identical brake failure. He had the same brake fire, and when = the plane=20 spun on the runway he lost both tires. (standard gear) Be careful with = the=20 brakes.
Bill Jepson 
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