Grav Locomotion in the RH on high-G planets?

[MasterGwydion]

Hey all! Just out of curiosity. Does anyone know what the limits on the Grav Locomotion in the RH? It seems to me to be designed for 1G worlds, so is likely to be a 2G G-Drive, but I have no actual information to base that assumption on. Also, if that is the case, how do We adjust the G-Drive to be able to function on High-G worlds?

Edit: Just occurred to Me that this may apply to the new Vehicle Handbook as well.