02-29-2012, 08:54 PM
Wouldn't that be mostly because while ACs are airborne the boosters have to support it both horizontally and vertically while on the ground it only has to rely on boosting it horizontally? I have to admit though there must be some sort of slippery/wheel/slight hovering mechanism on every biped, quad, and reverse joint legs to be able to move that fast on the ground without the problem of just wrecking whatever it's skidding across @_@