[xXhunter47Xx]

I can help you on drive trains.
Usually, from just observation, you can only determine if it's a dual gearbox system or a holonomic setup.
If the robot rotates and goes forward at high speeds, it usually is a dual gearbox system.
If the robot can strafe (move side to side without rotation), it's most likely a holonomic drive.

In a holonomic drive, you can have mecanum wheels or omni wheels.
Mecanum wheels have rollers positioned at 45 degree angles on the wheels, and will overcome the motors when they are moving against each other.
Omniwheels have free spinning rollers, and operate similarly to mecanum except you have to set it up in an "x" orientation as opposed to the regular wheel configuration to mecanum wheels. You can also use 5 omniwheels and set it up as a regular wheel configuration with the 5th driven in the center of the bot.