[AT] OT: Rosebuds! The oxi-acetylene kind...

[charlie hill]

Agreed Dean,  I like Cecil's idea.   I once had to do a piping tie in
on a 2" hard drawn copper pipe that ran breathing gases in a hospital.
It was a 2 am tie in and it was in the low 20's F.  We had to solder the
joint with 95% silver solder.  95% melts and flows just barely before the
copper pipe burns.  It took two rosebuds running wide open to ever get the
thing hot enough and then it was too hot.  It was ugly but we eventually got 
it
done.  I'm not saying this just to tell a war story.  If I had to do it 
over,
I would have built some sort of containment around the pipe so that the heat
was better trapped.  Between the cold air and the rest of the cold pipe 
beyond
the joint sinking the heat away it was a real problem to do and it was an 
ugly
joint.  Luckily it was just temporary until the final piping system was in.
I'm thinking a weed burner or two would have helped us that night.  It would
have put the necessary heat on the pipe and we could have used a cutting tip
to heat the joint more directly to flow the solder in.

Charlie

-----Original Message----- 
From: Dean VP
Sent: Thursday, November 14, 2013 5:20 PM
To: 'Antique tractor email discussion group'
Subject: Re: [AT] OT: Rosebuds! The oxi-acetylene kind...

This is really interesting. I've been looking for something that would heat
a larger area and metal mass such as the lower sliding draft links on a JD
three point hitch.  This trick might allow me to avoid having to take the
draft links to a place that has a kiln or forge to try to get the rusted
sliding links loose.  I have had some luck using a homemade forge by burying
the links in a large row of burning BBQ coals with a fan blowing on them.
Using a LPG weed burner or two might offer enough heat to get enough of the
whole link hot at the same time to get them loose. Even glowing hot they
sometimes require a bunch of beating to get them apart. .

Dean VP
Snohomish, WA

Atheism is a non-prophet organization.


-----Original Message-----
From: at-bounces at lists.antique-tractor.com
[mailto:at-bounces at lists.antique-tractor.com] On Behalf Of k7jdj at aol.com
Sent: Thursday, November 14, 2013 2:11 PM
To: at at lists.antique-tractor.com
Subject: Re: [AT] OT: Rosebuds! The oxi-acetylene kind...

I have used that method as well. Good sugestion.

Gary
Renton, WA







-----Original Message-----
From: Cecil R Bearden <crbearden at copper.net>
To: Antique tractor email discussion group <at at lists.antique-tractor.com>
Sent: Thu, Nov 14, 2013 4:56 am
Subject: Re: [AT] OT: Rosebuds! The oxi-acetylene  kind...


On a large part like that, I have had good success with one of those weed
burning propane torches.  Dad & I straightened the frame of a gooseneck
trailer that was bent over a 4 ft length years ago with 3 of those torches.
We made 2 of them since I only had one.  I have since made some small
torches with 1 1/2 dia pipe for more concentrated heating. Propane gets hot
and is a lot cheaper for a large heat than a rosebud.

Just my $0.02

Cecil in OKla


On 11/14/2013 6:22 AM, charlie hill wrote:
> Dave if the part is such that you can do it without messing something
> else up you might find you have better success, and cheaper, by just
> building a big fire and throwing the part in the bed of coals for a
> while.
>
> Charlie
>
> -----Original Message-----
> From: Dave Johnson
> Sent: Thursday, November 14, 2013 12:31 AM
> To: at at lists.antique-tractor.com
> Subject: [AT] OT: Rosebuds! The oxi-acetylene kind...
>
> I'm pretty ok with cutting & brazing, but have never used a rosebud to
> heat something, and my experience today has me scratching my head.
> The project at hand is freeing up a cast iron wheel hub, stuck on a keyed
1"
> shaft. This is on an old Gilson / MW garden tractor transmission....
> the idea is to liberate a set of 4 of these hubs to make dual adapters
> for use on another tractor with a FEL.
>
> I have soaked it for quite some time and have a puller tensioned on
> it, but it's not moving... so now it's time for a little heat.
>
> I bought a new victor 8-MFA rosebud and lit it off as I would the
> torch, but when I try to get a blue flame, it flames out with a pop!
>
> What's going on here? Do I not want a hot blue flame, or do I simply
> need to feed a lot more of both gases to the torch? Or??  Any insight
> into these things would be appreciated!
>
>     btw, I'm on digest, so it'll take a day for me to respond (:<((
>
>
> Dave in Gilroy, CA
> webguydave at yahoo.com
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