I've just been puttering around with some tech stuff about my aborted PC race (I want to give them another run, with a bit of setup IC to drum up interest) and I got to wondering: Just how effective is the anti-grav used in the setting? Does it perfectly nullify all gravitational effects on the unit? Or does it have a certain degree of load it can handle? Does it have an absolute cutoff point somewhere (i.e. it can handle 100 Gs of force, and then cuts out) or does it become less and less effective as the load increases?