1. VEX Drive Trains

2. Drive Trains Vocabulary Skid Steering (Tank Drive) Swerve Drive
Holonomic (Omni) Drive
Mecanum Drive

3. Drive Train
A robot’s drive train consists of all of the components used to make the robot move.
Motors
Wheels
Transmissions

4. Omni-Wheels rollers around the edges
allow omni-wheels to roll sideways

5. Mecanum-Wheels Rollers at 45° angles on the edges of
Left and right wheels are different.
Not Available for VEX
Rollers at 45° angles on the edges of
mecanum wheels allow multi-directional movement

6. X-Wheel Drive X = how many wheels are connected to motors
Two wheel drive: two wheels are powered
Four wheel drive: four wheels are powere
How many motors the robot has doesn’t matter:
The squarebot has only two motors, but it is an example of four wheel drive since all four wheels are connected to motors.

8. Skid Steering (Tank Drive)
The left and right side of the robot are independently powered.
To rotate, one side goes forward and the other goes backwards.

9. A swerve drive robot has the ability to rotate its wheels.
Swerve/Crab Drive
A swerve drive robot has the ability to rotate its wheels.

10. Omni Drive
Omni wheels pointing in opposite directions allow the robot to move in any direction or spin.

11. Mecanum Drive
Mecanum drive is an omnidirectional drive system where *mecanum wheels are setup in a traditional four wheel drive system.

12. Problems
We decided that all our future robots will have meccano or omni drives.
Give arguments, why?
Find on Internet good components for such drives.
Present a complete design of an inexpensive robot base for a large and heavy humanoid robot that would be able to move rotate in all directions making an impression that the robot walks. (robot has legs to imitate walking).