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Hi Marv,
Yes, Having used that H2000 to braze thin wall (0.049)
aluminum tubing to the stock intake manifold aluminum casting, I am not
surprised. As you said that aluminum really likes to wick heat away from
the spot you're trying to braze. I was initially unsuccessful because I
was using too small a BTU torch, but once I switch to a high BTU output torch,
it worked fine.
Yes, I never had any luck using aluminum brazing rods
until I found the H2000. I must have 5 lbs of various aluminum brazing rod
laying around that I could never get to work. Most of the time when they
melted the aluminum would just sizzle around on the material like a drop of
water on a hot skillet, but the H2000 is a different stuff.
Ed
----- Original Message -----
Sent: Friday, June 29, 2007 11:30
PM
Subject: [FlyRotary] Re: PP
Construction...Ed's comments requested :)
I recently had to fill a 1"ID
hole in a 2" dia x 12" long aluminum bar with a solid 1" rod about 2"
long. I couldn't get the parts up to temp with propane so I
swtiched to the oxy/acetylene tanks and it made all the difference in the
world. The aluminum mass really likes to sink away the heat almost as
fast as you apply it, so you really need to play the flame over a large area
to get the target up to temp. Once the parts got where they needed to be
the H2000 worked a charm, wicked into the joint just like sweating copper
pipe. It's pretty amazing
stuff.
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