Mailing List flyrotary@lancaironline.net Message #5019
From: Russell Duffy <13brv3@bellsouth.net>
Subject: RE: [FlyRotary] Re: aluminum hose bungs/fittings
Date: Mon, 29 Dec 2003 22:17:03 -0600
To: 'Rotary motors in aircraft' <flyrotary@lancaironline.net>
Message
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
  
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