25mph top speed, im sure a trike would be just fine, especially a straight line drag race. something else ive seen builders overlook (even when the care manufacturers built entries for a gravity race a few years ago) is that a bicycle wheel is not designed to take the kind of lateral force that is applied to a wheel by turning at speed w/out leaning into the turn, very dangerous! have fun and be safe, gravity riding is deceptively dangerous.
fast eddie outty
fast eddie outty