Hi Gadget, that video looks good, judging from the flame coming out the top, you've got lots of flame in with the crucible. After reading your posts, I got motivated and found the old paint gun I have, then I remembered an old oil burner I bought at the scrap yard for a couple dollars, probably twelve or fifteen years ago, and never did anything with. I dug it out, checked the wiring for safety reasons, put a tube in the inlet side of the pump, and plugged it in. I pumped about a cup of diesel on the floor of the shop before I pulled the plug, and noted it all came out of the return to tank fitting, with no sign of wetness around the jet. I took out the orifice, took it apart and used a coleman lantern wire to open the plugged orifice, put another piece of plastic line from the tank return to the tank sitting above the unit, and tried it again.
As you can see, the unit just needed un-plugging the orifice and it worked. I don't know how much heat it puts out, but it's substantial, and I'm going to have to play with tubes and tuyeres to see how they affect it, and of course, I will have to try it out with waste oil and various mixes, however you've got me on a roll, and I'm going to get this going this summer, and be casting by winter, or I'm changing my profession
You said you didn't get much effect at all out of changing the adjustment of the needle on your sprayer, I'm looking at this oil pump, and I see it as a matter of controlling the pressure as the primary means of controlling fuel flow. I suspect if I put a needle in the fuel return line, I will materially affect how much pressure is at the orifice, and be able to control the fuel supply. I reckon I'll see. Thanks much for putting me on this track, I've been waiting too long, and need to get it going.
mad jack
