what's the flame temperature of a gasoline stove? (pic too)

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/sasgen_winch_overhaul/photos/photo63.html babbitt_pouring06.jpg
I want to use it to pre-heat (heat soak) a pretty large piece of steel, prior to brazing some stuff to it...
thanks for info guys :-)
toolie
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The maximum flame temperture at the tip of the inner cone will be about 1900C if you have full aeration - pretty similar for all hydrocarbon fuels burning in air. Doesn't mean you can get a big piece of steel up to that temperature - that will depend upon all sorts of things like heat transfer rate and heat loss.
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It is not so much temperature, it is how many btu's you can put out on target.
Is that what they used to melt lead to seal soil pipe before PVC?
Wes
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Those burners typically did not have a very high flame temp, even getting a piece of steel red/orange hot took a long time. The flame is quite diffused. But they put out a LOT of BTU's/ If you are trying to preheat to the 600F range, these are great.
dave wrote:

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    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.

    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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