Hey I was wondering what kind of chassis, wheels, gears are for a robot with a lot of torque. Please help. I have decided on a trapezoidal chassis, and I know that the servo connects to the small gear and the wheel connects to the bigger gear. But I do not know what the optimal gear ratio should be and size of the wheel. Also should I have 4 wheels (two in the back and 2 small ones in the front.
The competition is to see if you can pull the other robot in a tug of war. It is going to be happening on a typical gym floor at a school. We are provided with only two servos, and we can make any design that can move and work for the tug of war.
The robot has to be 8" x 8" x 8" and should not exceed 2 lbs. There is no budget, and I am building this for real, not fiction. I'm planning to laser cut the chassis but I don't know how long and wide it should be. We also can laser cut wheels (I don't know if I should use 4 wheels or 3). If I am going to do the tracks (like on a tank), how would I do that? Does it require 4 servos and 4 different gear boxes? Also, for the type of gears, which one would be the best?