why does my forge sputter?

CWendling

CWendling

Joined
Sep 10, 2005
Messages
518
Got one of Darren Ellis' forges and as it gets up to temp (1800-1900) it starts to sputter. Runnin it at about 5-7psi on the regulator. Darren first thought it was the regulator, so he replaced that for me, but it is still doin it. Any other ideas why it does this?

Cory
 
If it's a blow out type sputtering, then you're not getting enough air, if it isn't that I'd probably say it was LPG entering the burner and causing it to flare. What size tanks are you running?
 
its a 100lb tank i think...about 4' tall. ya, its like its sputtering out and reigniting.
 
More Air less LPG. I have also found that if the tip of my nozzle gets too hot it causes problems too. I normally do not have problems until around 2300+ though. I am not sure of Darrins design but I can move my nozzle in or out as needed. This can have an influence on the temp also.
 
I would recommend doing a systematic search for the problem. Start either at the orifice, or the regulator, and take things apart and check of obstructions, a part at a time.
This has happened to me before, and after taking things apart, one item at a time and checking them, I found a tiny particle of something in the gas orifice area. It wasn't lodged in the orifice, but was in the fuel pipe just prior to it....I removed it, and everything worked fine.

If nothing is found, then chances are that what Chuck said is likely. Its a matter of elimination with gas forges, since each thing affect another.
 
try a blower, should fix it instantly, i think it's caused buy gas ignighting before it reaches the inside of the forge. im no expert but have had this prob. and is what i concluded to be the case not enough air, in the air/gas ratio to mix properly.

andy
 
I'm with Ed on this...when I built my burner I found that the orfice and its alignment are pretty critical features of the burner...the orifice has to have no burrs or misalignment or it won't get the mxture down the tube efficiently for a proper burn...I'd check there then the air mixture.
 
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