I am working on creating 1:1 scale (6m or less) speeder bikes for use on the planets' surface for my server. The problem is, with them have such little mass, one thruster coil will allow it to easily escape the planet's atmosphere. The solutions that come to my mind are either find a way to increase the mass of it's hull, create a new thruster specifically designed for land based vehicles, or change the strength of the planets' gravity. I'm not sure if there is a mass setting heavier than "heavy", making a separate thruster block seems a bit complex.... is it even possible to change the gravitational strength of planets?