From: "Finn Lassen finn.lassen@verizon.net" <flyrotary@lancaironline.net>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Radiator - A/C Evaporator core welding
Message-ID: <53540337-f6dc-f0b7-deb2-7dbe2b070898@verizon.net>
Date: Mon, 22 Feb 2021 16:04:12 -0500
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Some time ago Ed Anderson recommended some (rather expensive) DIY alum 
welding or brazing rods that he had good success with.

I really need to add some alum tubing to the ends of the evaporator core 
tanks (and close off the existing tubes going into the tank sides).

I'm worried that If I try to do that myself that I will disturb (weaken) 
the existing core brazing/welds.

I assume that if I take them to a (Tig?) welder he'll be able to do it 
so heat won't spread (or maybe submerged in water)?

Any advice?

BTW, I'm now unable to find the exact same cores on eBay and would 
rather avoid having to re-do the fiberglass inlet ducts. So I'll have to 
take the plane out of service to do it and to not mess up the cores.

Finn


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