I bought a drip torch end, then I took my 15 gallon pressure sprayer and took the wand off and attached the torch end to it. I use a shut off valve to control the amount of pressure/diesel-gas mixture coming out. Using the 4 wheeler I can run fire around a block in just a few minutes. You have to have the drip torch end to keep the fire lit.
in the past we used a propane burner and a 4 wheeler and it worked good. if your set on a drip tourch, listen to timbercruiser. with a diesel/gas mixture, that is not the time to expirement with home made.