I need help!! We are making a balloon powered car and I cant figure out how to make the wheels and the axel. im using a water bottle for a body and CDs for wheels....help!
Well, you need a rod for the axel, and cds will probably be too flimsy, so you should use something thicker, but not too heavy, or the balloon will have no effect. Make sure the axel is loose and goes through the bottle, good luck!
