Mailing List flyrotary@lancaironline.net Message #32754
From: Ernest Christley <echristley@nc.rr.com>
Subject: Re: [FlyRotary] Re: options for modifying radiator
Date: Tue, 18 Jul 2006 15:44:57 -0400
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Ed Anderson wrote:

Ernest, you are right "Welding" on a bung could cause the seams to loosen although a good TIG welder could do it.  However, brazing on a bung uses considerably lower temperatures - given the heat in that area,  I personally would not use epoxy.  You can probably find a radiator shop that can do the job for you quite reasonably or use the HT200 aluminum brazing material if you do it yourself..

I gave that some thought.  I'm assuming it would be plenty strong enough.  My concern is that brazing instead of TIGing means going from a extremely hot penline, to very hot brush stroke.  I think it was Mr. Hanover that suggested filling the radiator with cold water, surrounding the weld area with wet towels, and only welding a short length then letting it cool.  It's only (only?!) 80 bucks if I screw it up, but it sure would be nice not to have to approach it with a torch.

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        ,|"|"|,              Ernest Christley       |
----===<{{(oQo)}}>===----    Dyke Delta Builder      |
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