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From: Jerry Hey <jerryhey@earthlink.net>
Subject: Re: [FlyRotary] radiator fittings
Date: Wed, 18 Apr 2007 16:27:20 -0400
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>

Ernest,  cut out all the offending material and make a patch that can  
be TIG welded on.  Weld the 45 degree fitting to the patch and then  
weld the whole thing to the rad.  Ed K could do that for  you  
easily.   Jerry


On Apr 18, 2007, at 2:01 PM, Ernest Christley wrote:

> I bought 45-degree fittings and had them welded to my radiator.   
> The welder came with high recommendations.  He had trouble getting  
> a good weld, so he spread epoxy over it and applied a vacuum.  He  
> told me that he pressure tested the work, and  I was fool enough to  
> trust him.
> After successfully pressure testing my fuel tank, I decided to do  
> the same with the radiator, just for gitz and shiggles.  The air  
> blew out around the fittings about as fast as my little 2HP  
> compressor could pump it in.  I ended up pulling the radiator out  
> and found horrible leaks in both welds.  He didn't clean up after  
> the weld, but just laid the epoxy down on top of the corrosion.   
> The epoxy just peeled right off with nothing more than a knife edge.
>
> So now I'm looking for ways to recover the radiator.  I've cut back  
> some of the weldment to expose the large seam that the guy left  
> open.  There are chunks of epoxy stuck in various nooks and  
> crannies.  The weld is semi easy to get a torch to.  There is  
> enough structural strength to hold everything together, it's a  
> matter of keeping the water in at this point.
>
> Would ProSeal do the job?  With the radiator heated to 200F?
> Has anyone tried welding a radiator with a gas torch?
> Would one of the new miracle aluminum soldering rods do the job  
> better?
> I'm open to any ideas right now.
>
> -- 
>         ,|"|"|,              Ernest Christley       |
> ----===<{{(oQo)}}>===----    Dyke Delta Builder      |
>        o|  d  |o        http://ernest.isa-geek.org  |
>
> --
> Homepage:  http://www.flyrotary.com/
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