FingerTech Robotics Mecanum Wheels
FingerTech Robotics Mecanum Wheels (website)
• FingerTech's Mecanum Wheels allow any robotics enthusiast to add omni-directional capabilities to their creation.
• Outer roller diameter is 54mm (2.125"). Width: 34mm (1.3125" ). Set includes four wheels (2 A-side, 2 B-side).
• The new upgraded version is all-metal construction for maximum strength.
• Precision engineered aluminum hubs and rubber rollers with a customizable mount for any motor shaft size between 3mm - 6mm (0.118" - 0.25").
What can they do?
The four Mecanum wheels are each connected to a separate motor with independent control. The robot can move forward, backward and turn just like it would with four regular wheels.
The configuration of rollers at 45° also allows the robot to translate sideways, and through a combination of movements, drive in any direction - even while spinning!
How do they work?
Adjacent corners of the robot use mirrored wheels so that they can freely roll outward from the center. This splits the force into two vectors, one forward/backward and one right/left. When the wheels on one side are spun in opposite directions, the forward and backward vectors cancel out while both sideways vectors add up. Doing the reverse with the other two wheels results in four added sideways vectors.