[TheForge] burner question

Mon Dec 1 13:28:11 2003

Andy,

There is a drawing 
here...http://www.blacksmithsjournal.com/forgeinfo.html

There is no flare on the end of the burner that goes into the forge. 
The outside end is a piece of pipe that telescopes over the main burner 
pipe. The gas goes in the end. There are cut outs on the burner tube 
and the telescoping cap that allow for air adjustment.

Bob
__
On Monday, December 1, 2003, at 12:16 PM, Andy Vida wrote:

>
>
> Dave Brown wrote:
>>
>> At 11:38 12/01/03, you wrote:
>>>> But I've always
>>>> been under the impression that the bell reducer improved the flow 
>>>> of the
>>>> entrainment air so that it actually dragged in more air that way.
>>>
>>>         Well, this is an interesting thing.  When NJBA built their
>>>         gas forges, we built no flare into the burner.
>>
>> Andy, are we talking about the same thing?  Your use of the word 
>> "flare"
>> makes me think you are talking about the outlet of the mixing tube as
>> opposed to the bell reducer used at the input end of the tube.
>
> 	My mistake, I was thinking of the exit flare.  Ours definitely
> 	have reducers.
>>
>>>         Tapering down as the gas travels, or opening up?
>>
>> First the jet end has a bell opening which tapers rapidly down to the 
>> pipe
>> size.  Then the mixing pipe is usually lightly tapered all the way to 
>> the
>> outlet.  I have several of these in different sizes laying around the 
>> shop
>> and they are all like this.
>
> 	Never mind.  Brain gas.  Sheesh.
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