Return-Path: <13brv3@bellsouth.net> Received: from imf17aec.mail.bellsouth.net ([205.152.59.65] verified) by logan.com (CommuniGate Pro SMTP 4.3c3) with ESMTP id 828672 for flyrotary@lancaironline.net; Tue, 29 Mar 2005 11:47:39 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.65; envelope-from=13brv3@bellsouth.net Received: from rd ([65.6.194.9]) by imf17aec.mail.bellsouth.net (InterMail vM.5.01.06.11 201-253-122-130-111-20040605) with ESMTP id <20050329164654.JWYW2001.imf17aec.mail.bellsouth.net@rd> for ; Tue, 29 Mar 2005 11:46:54 -0500 From: "Russell Duffy" <13brv3@bellsouth.net> To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] AN fittings.. Date: Tue, 29 Mar 2005 10:47:04 -0600 Message-ID: <024701c5347e$efb16070$6101a8c0@rd> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0248_01C5344C.A516F070" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2527 Importance: Normal In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_0248_01C5344C.A516F070 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable The direct quote is "all fittings that are attached to an engine need to be steel fittings. Aluminum fittings are not acceptable." Its in bold. Hi Dave, =20 As Lynn said, the reason is fatigue, because you have a moving object on = the end of a hose. In the RV world, it's generally recommended to use steel = for anything below about AN8, then aluminum is OK above that. The larger aluminum fittings are pretty beefy. In our case, we don't have nearly = the shaking of the Lycomings, so it's even less of a problem. Do make sure = the hoses have slack, and are secured as needed along the way to eliminate = as much stress as possible on the fitting. =20 =20 Cheers, Rusty (working too much this week to get much done) =20 ------=_NextPart_000_0248_01C5344C.A516F070 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message

The direct quote is "all fittings that are attached to = an engine=20 need to
be steel fittings. Aluminum fittings are not acceptable." Its = in=20 bold.

Hi=20 Dave,
 
As Lynn = said, the reason=20 is fatigue, because you have a moving object on the end of a hose.  = In the=20 RV world, it's generally recommended to use steel for anything below = about AN8,=20 then aluminum is OK above that.  The larger aluminum fittings are = pretty=20 beefy.   In our case, we don't have nearly the shaking of the=20 Lycomings, so it's even less of a problem.  Do make sure the = hoses=20 have slack, and are secured as needed along the way to eliminate as much = stress=20 as possible on the fitting. 
 
Cheers,
Rusty = (working too much=20 this week to get much done)
 
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