[NoodleKnight]

Originally Posted by mechanicalbrain

Yeah if you want one motor to run your drive train than you are going to have to do some fancy gearing, especially where steering is concerned. Is it a matter of a lack of motors, too much weight, or just to see if its possible. I know you can do it with three motors pretty easily but it wont be very powerful or it wont be fast (or both will be mediocre). On a side note i want to see a drive train that doesn't have a direct motor to wheel system (what i mean is having a system where you have a torque to speed ratio).

I believe "Tazlikesrobots" was making an EDU bot for prototyping/tinkering, it doesn't have to meet any weight specs and so forth. He's bound to two motors because of his controller (which reminds me, do you have more motors? Because you can do away with the coaxial junk and just make each wheel have their own motor and use a pwm cable split 4-ways).
And I don't exactaly understand by "a drivetrain that doesnt have a direct motors to wheel system" -- do you mean a shifting transmission? or some drivetrain that transfers power to the wheels via viscous fluids?