Do any of you guys know if the little BernzoMatic type, and the stubby
Coleman type propane tanks are brazed together? I'm thinking of trying
to use one for the large cyl of a stirling engine and need to take it
apart to install the displacer, and then put it back together. If they
are brazed it should be a (relatively) simple job to separate and
rejoin the 2 halves..
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clare at snyder.on.ca wrote:
Do any of you guys know if the little BernzoMatic type, and the stubby
Coleman type propane tanks are brazed together? I'm thinking of trying
to use one for the large cyl of a stirling engine and need to take it
apart to install the displacer, and then put it back together. If they
are brazed it should be a (relatively) simple job to separate and
rejoin the 2 halves..

I doubt it. Brazing is usually not cost-effective
for mass-produced low-overhead products.

Sorry about all the hyphens.

clare at snyder.on.ca wrote in message
...
Do any of you guys know if the little BernzoMatic type, and the stubby
Coleman type propane tanks are brazed together? I'm thinking of trying
to use one for the large cyl of a stirling engine and need to take it
apart to install the displacer, and then put it back together. If they
are brazed it should be a (relatively) simple job to separate and
rejoin the 2 halves..
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Hi Clare

If you had two very similar tanks, it might be easy to cut them both so
that one tank could be easily welded (or brazed) back together.

Jerry

clare wrote:
Do any of you guys know if the little BernzoMatic type, and the stubby
Coleman type propane tanks are brazed together? I'm thinking of trying
to use one for the large cyl of a stirling engine
Clare, sounds like a nice sized Stirling. Is this a hobby engine or?
Bill.

On Wed, 01 Mar 2006 14:45:29 -0500, clare at snyder.on.ca wrote:

Do any of you guys know if the little BernzoMatic type, and the stubby
Coleman type propane tanks are brazed together?

Welded. Usually most of it is done with a roller-type resistance
welder.

On 1 Mar 2006 15:18:37 -0800, wrote:


clare wrote:
Do any of you guys know if the little BernzoMatic type, and the stubby
Coleman type propane tanks are brazed together? I'm thinking of trying
to use one for the large cyl of a stirling engine
Clare, sounds like a nice sized Stirling. Is this a hobby engine or?
Bill.
Hobby engine. 1 lb BernzoMatic type cyl for the expander, with a 355ml
Canadian aluminum pop can for a displacer.
Power piston is 29mm. Stroke can be up to 95mm, will likely be less,
but the dash-pot cyl I'm using is that size.

Need to find a decent flywheel - likely about 8 inches or 180mm, more
or less. I have some ball-end linkages (10-32 thread) that I will
likely use to articulate the connecting rods and connect to the
flywheel.

Will likely use a propane burner.
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On Thu, 02 Mar 2006 00:06:57 +0000, Andy Dingley
wrote:

On Wed, 01 Mar 2006 14:45:29 -0500, clare at snyder.on.ca wrote:

Do any of you guys know if the little BernzoMatic type, and the stubby
Coleman type propane tanks are brazed together?

Welded. Usually most of it is done with a roller-type resistance
welder.
Looks like I'll hacksaw the bottle abart, and weld it back together
with the pop-can inside.
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Several years ago I used the lathe to cut the top end off of a number
of the Bernzo type propane and oxygen cylinders. Chucked the bottom in
a three jaw chuck. Used a live center in the port opening. Used lots of
WD-40 for lube to be sure there was no sparking. As soon as I was
certain there was an opening into the tank, I stopped and let then set
for a while to vent and residual gas. Of course the cylinders had been
emptied and left open for a long time before I started.

No problem with either gas bottle. Didn't do more than 2-3 because I
could find no use for the things after I cut them open. Perhaps you
will have better luck that way.

Best regards, Paul


clare wrote:
On Thu, 02 Mar 2006 00:06:57 +0000, Andy Dingley
wrote:

On Wed, 01 Mar 2006 14:45:29 -0500, clare at snyder.on.ca wrote:

Do any of you guys know if the little BernzoMatic type, and the stubby
Coleman type propane tanks are brazed together?

Welded. Usually most of it is done with a roller-type resistance
welder.
Looks like I'll hacksaw the bottle abart, and weld it back together
with the pop-can inside.
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clare wrote:

Need to find a decent flywheel - likely about 8 inches or 180mm, more
or less.

Get a weight-lifting disk.
[And ignore the answers, that it will fly apart.]

Nick
--
Motor Modelle // Engine Models
http://www.motor-manufaktur.de
DIY-DRO // Eigenbau-Digitalanzeige
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