has anybody built a reverse tricycle? I am thinking of building a 3 wheeler, two 16" wheels from a baby jogger in front and a 12" wheel in the rear. powered by vertical shaft 6 1/2 hp lawn mower engine, v belt 2 1/2" pulley with twisted belt back to jack shaft with centrifugal clutch and chain to rear wheel. steering will be similar to go kart. disc brake on rear wheel only. any suggestions, tips. thanks