Dave,
Great idea. I hadn’t thought of
that. It will help me get the thing to the welder with pieces aligned.
You’re up a little early, no?
Bryan
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On
Behalf Of David Leonard
Sent: Monday, April 27, 2009 8:57
AM
To: Rotary
motors in aircraft
Subject: [FlyRotary] Re: Epoxies
vs welding
JB is good for sealing
pinholes and the like, but I would not use it to hold tubes together or
anything structural like that. It does get old and brittle with time and
heat cycles.
I used some of those putties as a type of tac weld on occasion. It would
hold complex pieces together long enough to get to the welder. But you
have to use something else while the actual welding is being done. The
epoxy melts right off soon after welding starts.
Dave Leonard
On Mon, Apr 27, 2009 at 5:34 AM, Bryan Winberry <bryanwinberry@bellsouth.net>
wrote:
Thanks Al,
I was thinking of an application like holding seated runners in the machined
manifold. Or possibly joining tubing together. The ability to
contour and
smooth this product would seem suited here where air flow is an issue.
But
I don't know if it would stand up to all the rigors (vibration, heat, etc.)
Just throwing it out there since JB Weld is smoothing the ports on several
intakes out there.
Bryan
-----Original Message-----
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net]
On
Behalf Of Al Gietzen
Sent: Monday, April 27, 2009 2:25 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Epoxies vs welding
On another note, has anyone contemplated using the two part puttys in areas
like intake manifold construction. I saw some in HD that claims good for
temps up to 450. I'm hesitant, but this stuff seems to be a cousin to JB
Weld.
Bryan
JB weld ( and similar) is wonderful stuff that adheres to almost anything,
and is amazingly strong. So if need things to hold together and make a
good
seal - great. But if you need real strength, anything that just adheres
to
the surface is not going to be as strong as a good weld. So consider your
application, and what it has to do, and then decide.
FWIW,
Al G
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David Leonard
Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.net
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