The problem with using wood as a fuel compared to gasoline is very basic. 1 pound of wood = 3,500 btu's 1 gallon of gasoline = 125,000 btu's Therefor 714 lbs of wood would have the same btu's as 20 gallons of gas. The weight and the storage space needed for wood does not make it suitable for many uses. I believe wood would give off smoke even in a Cyclone engine. ----- spell check last post: should have been "here" ------------