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VEX Drive Trains. Drive Trains. Vocabulary Skid Steering (Tank Drive) Swerve Drive Holonomic (Omni) Drive Mecanum Drive. Drive Train. A robot’s drive train consists of all of the components used to make the robot move. Motors Wheels Transmissions. Omni-Wheels.

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Presentation Transcript
drive trains
Drive Trains
  • Vocabulary
  • Skid Steering (Tank Drive)
  • Swerve Drive
  • Holonomic (Omni) Drive
  • Mecanum Drive
drive train
Drive Train

A robot’s drive train consists of all of the components used to make the robot move.

  • Motors
  • Wheels
  • Transmissions
omni wheels
Omni-Wheels

rollers around the edges

allow omni-wheels to roll sideways

mecanum wheels
Mecanum-Wheels

Rollers at 45° angles on the edges of

mecanum wheels allow multi-directional movement

Left and right wheels are different.

Not Available for VEX

x wheel drive
X-Wheel Drive

X = how many wheels are connected to motors

  • Two wheel drive: two wheels are powered
  • Four wheel drive: four wheels are powered

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.
skid steering tank drive
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.

swerve crab drive
Swerve/Crab Drive

A swerve drive robot has the ability to rotate its wheels.

omni drive
Omni Drive

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

holonomic drive in action
Holonomic Drive in Action

A VEX robot with a holonomic drive

mecanum drive
Mecanum Drive

*Mecanum wheels are not for sale for VEX

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

mecanum drive in action
Mecanum Drive in Action

A VEX robot with custom made mecanum wheels