Return-Path: <13brv3@bellsouth.net> Received: from imf21aec.mail.bellsouth.net ([205.152.59.69] verified) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 2910168 for flyrotary@lancaironline.net; Mon, 29 Dec 2003 23:17:03 -0500 Received: from rad ([68.155.98.142]) by imf21aec.mail.bellsouth.net (InterMail vM.5.01.06.05 201-253-122-130-105-20030824) with ESMTP id <20031230041701.JJNY1948.imf21aec.mail.bellsouth.net@rad> for ; Mon, 29 Dec 2003 23:17:01 -0500 From: "Russell Duffy" <13brv3@bellsouth.net> To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: aluminum hose bungs/fittings Date: Mon, 29 Dec 2003 22:17:03 -0600 Message-ID: <003301c3ce8b$c77bc820$6001a8c0@rad> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0034_01C3CE59.7CE15820" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.4510 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 Importance: Normal In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_0034_01C3CE59.7CE15820 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Tracy's comment was that my installation would never make it in a Lycoming environment (vibrations). I never fully understood that - if cores are solidly mounted to the engine there should be no realtive motion... Finn Thanks Finn. I agree about the relative motion comment. The Howe radiator came with a warning not to mount it solidly, because the aluminum had to be allowed to expand and contract with heat. I've noticed that all radiators are mounted with rubber bushings of some type, and I bet that's the main reason. With a large, thin radiator, you would also expect that it would flex some with vibration, but I can't see that happening to any real extent with these evap cores. As Tracy suggested, the lack of vibration makes solid mounting less of an issue for us anyway. The only way you'd get any real vibration is if you lost a rotor. In that case, you aren't exactly having the best day of your life already, so what's a little water leak :-) Cheers, Rusty ------=_NextPart_000_0034_01C3CE59.7CE15820 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Message
Tracy's comment was that my installation would never make it in a = Lycoming=20 environment (vibrations).
I never fully understood that - if cores = are=20 solidly mounted to the engine there should be no realtive=20 motion...

Finn 
 
Thanks=20 Finn.  I agree about the relative motion comment.  The Howe = radiator=20 came with a warning not to mount it solidly, because the aluminum had to = be=20 allowed to expand and contract with heat.  I've noticed that=20 all radiators are mounted with rubber bushings of some type, and I = bet=20 that's the main reason.  With a large, thin radiator, you = would also expect that it would flex some with vibration, but = I can't=20 see that happening to any real extent with these evap=20 cores.  
 
As Tracy=20 suggested, the lack of vibration makes solid mounting less of an issue = for us=20 anyway.  The only way you'd get any real vibration is if you lost a = rotor.  In that case, you aren't exactly having the best day of = your life=20 already, so what's a little water leak :-) 
 
 
Cheers,
Rusty=20
  
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