Discontinued - See our newly upgraded Mecanum V2 Set!
Use our Mecanum Wheels to add omni-directional capabilities to your robot.
set includes upgraded aluminum mounts and threaded pins with screws to hold the rollers on. No gluing is required. Loctite on the screws will ensure that a roller will not fall off during a competition.
What can they do?
The four mecanum wheels are each connected to a motor for independent control. The robot can move forward, reverse and spin just like four regular wheels. The configuration of rollers at 45° also allows the robot to translate sideways and through a combination of these, in any direction (even while spinning!).
How do they work?
Adjacent corners use mirrored hubs so that the wheels freely roll outward from the center of the robot. 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.
How do I drive?
Control can be accomplished with a microcontroller or simply using an R/C transmitter! When both sticks are pushed in any direction, the robot moves in that direction. Pushing the sticks towards or away from each other makes the robot spin in place.
The easiest way to think of it is that the left stick controls the front two wheels in any direction, and the right stick controls the rear two wheels in any direction. To achieve this control, two of our V-Tail mixers
are required. One mixes the front two wheels to the left stick to respond just like a two-wheel-drive robot. The second mixes the rear two wheels to the right stick in the opposite fashion.
Mecanum Hub material: Black Acetal (Delrin)
Roller material: EPDM 50-60D(A) Rubber
Outside wheel diameter: 2.125"
Wheel width at widest point: 1.25"
Mount Diameter: 1"
Mount Width: 0.375"
Bore of mount: 3mm (can be drilled to any size up to 1/4")
Weight: 52grams (1.83oz) per wheel
Capacity: 0.5-13kg (1-30lb) robot.
Testing a 1.36kg (3lb) Mecanum robot pushing against another unpowered robot equipped with Lite Flite
Pushing Forward, the Mecanum robot easily moves 66% of its own weight and can slowly push 100%.
Pushing Sideways, the Mecanum robot can easily move 33% of its own weight and can slowly push 66%.
One 0.050" hex wrench and one 1/16" hex wrench
Four Mecanum wheels (two A-style, two B-style), each with:
-Six threaded brass pins, twelve pre-drilled rubber rollers, twelve 2-56 screws
-One delrin hub, one aluminum mount, four 4-40 screws, one 6-32 setscrew
The guys over at Robot Logic
have put together an R/C Mixer
for Mecanum Wheels. Now control your omni-directional robot with just 3 channels of your transmitter! The right stick is used for translation left/right/forward/back while the left stick is used to spin the robot. This gives you a super simple method of driving your robot! Combine this with a heading-lock gyro (common in R/C helicopters) for rock-solid operation!