QUOTE (Michel @ Oct 24 2007, 10:25 AM)

how do you know the surfice isn,t slanted??
i spent about an hour building it, actually i build 3 versions with different sizes and weights, this is hoax, none works, they run a little than stop, i didn,t belive it would work i just tryed to proove it for myself, it doesn,t work, b.s. the only way it works is dowhill.