On 2008-10-03, dave wrote:
anybody know the flame temperature of a gasoline "plumbers blowtorch"
type stove when it's burning blue? the kind in the center-left of this
picture, on the dolly...

http://machines.freehostia.com/sasge...s/photo63.html
babbitt_pouring06.jpg

It would have been nice if you had also posted the start point.
It took a while to guess the starting point URL.

My opinion is that those bronze bearings were *not* cast in
place in the steel. If they had been, there would have been no need for
the key and the cotter pin. They would have had a firm grip on the cast
iron (just from its as-cast irregularities, if nothing else). They were
probably cast in sand.

I want to use it to pre-heat (heat soak) a pretty large piece of steel,
prior to brazing some stuff to it...

No clues as to the temperature above. Stick a thermocouple in
the flame to see what you get.

Good Luck,
DoN.

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