Stan, if you really want some real flywheel fun, pick up a full size Hit-N-Miss engine, about a 1-1/2hp is just right! I have a 1927 Economy 1-1/2HP Hit-N-Miss engine that I bought years ago at the annual Portland, IN (May) swap meet. It is a ton of fun, my brother-in-law, has several and we take them to various antique engine shows and run them all weekend on just about a gallon of gas or so! We like to belt them up on various goofy objects that we can come up with and the spectators love it! Karl, ChipMaker