I just found this site a week ago and thought somebody might like to check out a brand new homemade, and a rebuilt modified. I made the older one for a buddy of mine about a year ago. The new one sports a 12 horse Honda from a generator, a dual stage pump from (Chicago Pneumatics,I think)5hp min., and an old 250 gal. LP gas tank. Havent fired it off yet, but will try to get some video on it when I do. The old one will go from 0-150lbs.,in about 2.5-3min!