X-CGP-ClamAV-Result: CLEAN X-VirusScanner: Niversoft's CGPClamav Helper v1.23.0 (ClamAV engine v0.103.0) From: "Charlie England ceengland7@gmail.com" Received: from mail-il1-f169.google.com ([209.85.166.169] verified) by logan.com (CommuniGate Pro SMTP 6.2.14) with ESMTPS id 1245149 for flyrotary@lancaironline.net; Mon, 22 Feb 2021 18:26:13 -0500 Received-SPF: pass receiver=logan.com; client-ip=209.85.166.169; envelope-from=ceengland7@gmail.com Received: by mail-il1-f169.google.com with SMTP id k2so4499509ili.4 for ; Mon, 22 Feb 2021 15:26:14 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=3HphLnKp6hvbo2EOfai17klBJb1kKNCTM0i08k1q/M4=; b=TDmUXK1BJRb2L4kN9vpndXQaePlWdM/SMIm2KGHoLQRRHHDjLClUfvt5bACDsUiaKE rQR7aMx2nMnrsLRh2sMYwS0ZX6ZapJst7ogdJ80tMEEVACKYnyeevB3tZ/9H+LXOZMli 3OV47Pl3/zbMmPrvQglkItCvVv3o/JgJLh5hf+seITn6E9xo3qzGysuWboZ9b3uVkdon j1rkL29KNOelH8pIEYJ5eB+XvT3mC1oZdes9HrQsNso5has7frPlglSSLZUDuywNKPLb GbL/b9CgkhECXj2QhsSxeeik5mRSs4xEBDTNBS4VOZkZsV3bqUeSxTZvv4Bdd1ODbqb3 jttQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=3HphLnKp6hvbo2EOfai17klBJb1kKNCTM0i08k1q/M4=; b=iX9goIIU+n+TO1WRXchefiroi/RlkXXG7YZYpUVTPzFkZBrijE9ILQ1qj1Lo/nUkrq CaYj9RRYJu2xZm0WOFi7zQFxf12UiAlfbVmGjbKQNpCVHoXj8TV696KH+OQfuZ3oOE5m lRBJaeut3lYfEneY3aSVj+s8glg6LjLuUbZSC6zjeXZ893h+e8yHRORgL6g1Ak7Uj8ly 15RyM46CiuEYP63D1/X6kV+blTN5dF2b7FVHe+Owx/cTW3uKmy/LPSxxTJK0npvkcG+S 600XR8a/EQ1ZoyzDnUY7jzGKUP6ui6LraVyuCgmZrvppToQSqtASH3UDdvYAxG5Mp45c g9eA== X-Gm-Message-State: AOAM532MjCkOzzqW/m43yQuzt6ezS+67h5vBamlTRLr3CXqILryZapZy 2/ypQDdJCD4VJDYzt37cJgANb76LwC02TCotm6KEm8ah X-Google-Smtp-Source: ABdhPJyteL58ru80ClTzrT8wuSTf1wfxMroER1rXKnuXgjA+eFKTpUCn1uW8pE4SrrQKdH040sFjso/RDSg5hHmHfdg= X-Received: by 2002:a05:6e02:c88:: with SMTP id b8mr14202002ile.135.1614036356722; Mon, 22 Feb 2021 15:25:56 -0800 (PST) MIME-Version: 1.0 References: In-Reply-To: Date: Mon, 22 Feb 2021 17:25:09 -0600 Message-ID: Subject: Re: [FlyRotary] Radiator - A/C Evaporator core welding To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary="000000000000b2758a05bbf51fa3" --000000000000b2758a05bbf51fa3 Content-Type: text/plain; charset="UTF-8" https://www.alumiweld.com/ is one brand, but most local welding shops will carry some version of the stuff. I used it to braze my intake tubes to 1/4" plate, but I have no idea whether it will stand up to the intake pulses & vibration with the engine running. I can tell you that the stuff isn't the magically easy to use stickum that it seems to be, when you're watching the carnival barker at SNF. The stuff I used was marginal on thick stuff with a propane torch (might not be a factor with the heat exchanger). You'll almost certainly need a wood handled stainless steel brush to free the corrosion on the base metal while the torch is applied to the molten brazing material. Have you thought about hitting Barry up to take a look at it? ;-) Charlie On Mon, Feb 22, 2021 at 3:04 PM Finn Lassen finn.lassen@verizon.net < flyrotary@lancaironline.net> wrote: > 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 > > > --- > This email has been checked for viruses by Avast antivirus software. > https://www.avast.com/antivirus > > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html > --000000000000b2758a05bbf51fa3 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
https://www.alumiweld.com/
is one brand, but m= ost local welding shops will carry some version of the stuff. I used it to = braze my intake tubes to=C2=A0 1/4" plate, but I have no idea whether = it will stand up to the intake pulses & vibration with the engine runni= ng. I can tell you that the stuff isn't the magically easy to use stick= um that it seems to be, when you're watching the carnival barker at SNF= . The stuff I used was marginal on thick stuff with a propane torch (might = not be a factor with the heat exchanger). You'll almost certainly need = a wood handled stainless steel brush to free the corrosion on the base meta= l while the torch is applied to the molten brazing material.

Have you thought about hitting Barr= y up to take a look at it? ;-)

Charlie

On Mon, Feb 22, 2021 at 3:04 PM Finn Lassen finn.lassen@verizon.net <flyrotary@lancaironline.net> wrot= e:
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 t= o
take the plane out of service to do it and to not mess up the cores.

Finn


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