From a 1978 Yamaha GT80 Minicycle frame off the side of the road, with a jackshaft (w/ a huge gear reduction) and a 6hp snowblower engine, this thing would haul me up huge hills. However, tempted with another free identical engine, out came the hacksaw and welder. This thing would peel out on dry pavement, equipped with straight, non baffled pipes it sounded like a Harley. He he...always one of my favorite creations.