X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: <13brv3@bellsouth.net> Received: from imf19aec.mail.bellsouth.net ([205.152.59.67] verified) by logan.com (CommuniGate Pro SMTP 5.0.4) with ESMTP id 888540 for flyrotary@lancaironline.net; Mon, 19 Dec 2005 14:07:56 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.67; envelope-from=13brv3@bellsouth.net Received: from ibm60aec.bellsouth.net ([65.6.194.9]) by imf19aec.mail.bellsouth.net with ESMTP id <20051219190647.JFGW1543.imf19aec.mail.bellsouth.net@ibm60aec.bellsouth.net> for ; Mon, 19 Dec 2005 14:06:47 -0500 Received: from rd ([65.6.194.9]) by ibm60aec.bellsouth.net with ESMTP id <20051219190645.BASR3833.ibm60aec.bellsouth.net@rd> for ; Mon, 19 Dec 2005 14:06:45 -0500 From: "Russell Duffy" <13brv3@bellsouth.net> To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Heat exchangers Date: Mon, 19 Dec 2005 13:06:45 -0600 Message-ID: <000701c604cf$5aeab370$6101a8c0@rd> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0008_01C6049D.10504370" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2527 In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_0008_01C6049D.10504370 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Here is a picture of the Ford fitting attach area. Note the strap to = hold the stack together. Also not the 1/8 thick plate that the fitting is attached to. Looks like this may have been a fix for a design problem = with the other cores. =20 =20 Hi Monty, =20 I wonder about the wisdom of trying to restrain the cores from being = able to expand. I installed a radiator that came with dire warnings against = rigidly mounting it. They said it had to be allowed to expand and contract with temp changes, and if you mounted it rigidly, it would fail in short = order. =20 =20 I realize the strap in the photo is stock, and perhaps if you keep the = same type material (aluminum, steel, etc), and subject it to the same temps, = then it will expand and contract along with the core. I just don't think it would be wise to try to beef up a core, without knowing what new = stresses it might cause. =20 =20 Cheers, Rusty=20 ------=_NextPart_000_0008_01C6049D.10504370 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Message
Here is a picture of the Ford = fitting attach=20 area. Note the strap to hold the stack together. Also not the 1/8 thick = plate=20 that the fitting is attached to. Looks like this may have been a fix for = a=20 design problem with the other cores.  
 
Hi Monty,
 
I wonder about the wisdom of trying to = restrain the=20 cores from being able to expand. I installed a radiator that came=20 with dire warnings against rigidly mounting it.  They = said it had=20 to be allowed to expand and contract with temp changes, and if you = mounted=20 it rigidly, it would fail in short=20 order.  
 
I realize the strap in the photo is stock, = and perhaps=20 if you keep the same type material (aluminum, steel, etc), and subject = it to the=20 same temps, then it will expand and contract along with the core.  = I just=20 don't think it would be wise to try to beef up a core, without knowing = what new=20 stresses it might cause. 
 
Cheers,
Rusty =
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