X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imo-m18.mx.aol.com ([64.12.138.208] verified) by logan.com (CommuniGate Pro SMTP 5.0c1) with ESMTP id 681921 for flyrotary@lancaironline.net; Thu, 25 Aug 2005 16:07:56 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.12.138.208; envelope-from=WRJJRS@aol.com Received: from WRJJRS@aol.com by imo-m18.mx.aol.com (mail_out_v38_r4.1.) id q.82.2ef8f8b0 (15899) for ; Thu, 25 Aug 2005 16:07:07 -0400 (EDT) Received: from mblk-d37 (mblk-d37.mblk.aol.com [205.188.212.221]) by air-id09.mx.aol.com (v107.10) with ESMTP id MAILINID92-3e1b430e24eb267; Thu, 25 Aug 2005 16:07:07 -0400 Date: Thu, 25 Aug 2005 16:07:06 -0400 Message-Id: <8C777C7B3D1B827-960-1C30B@mblk-d37.sysops.aol.com> From: wrjjrs@aol.com References: Received: from 66.127.99.234 by mblk-d37.sysops.aol.com (205.188.212.221) with HTTP (WebMailUI); Thu, 25 Aug 2005 16:07:06 -0400 X-MB-Message-Source: WebUI X-MB-Message-Type: User In-Reply-To: X-Mailer: AOL WebMail 1.1.0.13507 Subject: Re: [FlyRotary] Re: Flamible brake fluid Content-Type: multipart/alternative; boundary="--------MailBlocks_8C777C7B3D1B827_960_1AE66_mblk-d37.sysops.aol.com" MIME-Version: 1.0 To: flyrotary@lancaironline.net X-AOL-IP: 205.188.212.221 X-Spam-Flag: NO ----------MailBlocks_8C777C7B3D1B827_960_1AE66_mblk-d37.sysops.aol.com Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Ernest, Dot 5 is the silicone based fluid. Dot 5 is compatable with almost any seal= material. Most of the racing fluids mentioned are technically classified Do= t 4. The performance fluids dramatically exceed the Dot 4 requirements. Any=20= manufacturer that doesn't use at least buna-n or EPDM (viton) seals are almo= st criminally negligent. There is NO reason, cost or otherwise not to use a=20= modern seal material. Viton is as cheap as any other these days. I am suppri= sed that liability hasn't forced aircraft brake manufacturers to modernize t= heir equipment. (I despise lawsuits, but I'm supprised someone using the sta= ndard fluid who burned their plane down hasn't sued forcing them to update!) Bill Jepson=20 =20 -----Original Message----- From: Ernest Christley To: Rotary motors in aircraft Sent: Thu, 25 Aug 2005 14:38:04 -0400 Subject: [FlyRotary] Re: Flamible brake fluid WRJJRS@aol.com wrote:=20 =20 > Bob,=20 > You are correct about the flashpoint comment, however we are talking > abo= ut a REAL flamability issue with mineral-oil-based aircraft brake > fluid. N= ot only does it (aero fluid) boil at low temps it *_supports_* > combustion.= For our purposes both are bad things. Brake fires are > virtually unheard o= f at car races. That with rotors glowing orange > 800-900=B0F?! It seems abs= urd that we don't use the best and safest > product available.=20 > Bill Jepson=20 =20 Bill, the technical section of Matco's site says to use DOT 5 (at least, for= all the master cylinder's that I've looked at). Would any DOT 5 do, or are=20= there strange variations that will ruin the seals if one isn't careful?=20 =20 If it is available, I'd prefer to get something along the lines of the Lockh= eed 550 that Lynn mentioned (though, I don't plan on replacing it every othe= r race 8*). Such a small amount is required, that it doesn't really cost muc= h to go from the very cheapest to the very best. I just don't want to inadve= rtantly destroy the master cylinder O-rings in the process.=20 =20 -- ,|"|"|, |=20 ----=3D=3D=3D<{{(oQo)}}>=3D=3D=3D---- Dyke Delta |=20 o| d |o www.ernest.isa-geek.org |=20 =20 --=20 Homepage: http://www.flyrotary.com/=20 Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/=20 ----------MailBlocks_8C777C7B3D1B827_960_1AE66_mblk-d37.sysops.aol.com Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Ernest,

Dot 5 is the silicone based fluid. Dot 5 is compatable with = almost any seal material. Most of the racing fluids mentioned are technicall= y classified Dot 4. The performance fluids dramatically exceed the Dot 4 req= uirements. Any manufacturer that doesn't use at least buna-n or EPDM (v= iton) seals are almost criminally negligent. There is NO reason, cost o= r otherwise not to use a modern seal material. Viton is as cheap as any othe= r these days. I am supprised that liability hasn't forced aircraft brak= e manufacturers to modernize their equipment. (I despise lawsuits, but=20= I'm supprised someone using the standard fluid who burned their plane down h= asn't sued forcing them to update!)

Bill Jepson

-----Original Message-----
From: Er= nest Christley <echristley@nc.rr.com>
To: Rotary motors in aircraft= <flyrotary@lancaironline.net>
Sent: Thu, 25 Aug 2005 14:38:04 -040= 0
Subject: [FlyRotary] Re: Flamible brake fluid

WRJJRS@aol.com wrote: =

> Bob,
> You are correct about the flashpoint c= omment, however we are talking > about a REAL flamability issue with mine= ral-oil-based aircraft brake > fluid. Not only does it (aero fluid) boil=20= at low temps it *_supports_* > combustion. For our purposes both are bad=20= things. Brake fires are > virtually unheard of at car races. That with ro= tors glowing orange > 800-900=B0F?! It seems absurd that we don't use the= best and safest > product available.
> Bill Jepson
=
Bill, the technical section of Matco's site says to use DOT 5 (at=20= least, for all the master cylinder's that I've looked at). Would any DOT 5 d= o, or are there strange variations that will ruin the seals if one isn't car= eful?

If it is available, I'd prefer to get something alo= ng the lines of the Lockheed 550 that Lynn mentioned (though, I don't plan o= n replacing it every other race 8*). Such a small amount is required, that i= t doesn't really cost much to go from the very cheapest to the very best. I=20= just don't want to inadvertantly destroy the master cylinder O-rings in the=20= process.

-- ,|"|"|, |
----=3D=3D=3D<{{= (oQo)}}>=3D=3D=3D---- Dyke Delta |
o| d |o www.ernest.isa-geek.org |&n= bsp;

--
Homepage: http://www.flyrotary.com/
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