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Unconditional Satisfaction GuaranteeNo Shipping Fees Above 302 Months to Decide. Returns Simplified.The AndyMark 4-inch BB Mecanum Wheels Set (4x) is a lightweight, slim wheel. BB stands for Ball Bearing, referring to the bearings inside of each roller that make for incredibly smooth motion. This wheel was optimized for an FTC Chassis, such as the MecanAM Chassis. These wheels ship as an unassembled kit.
A full set consists of 2 “right” wheels and 2 “left” wheels. The “right” and “left” refer to the direction the rollers are pointing when viewing the wheel as if you’re about to get run over by the wheel itself. If the roller in the middle of the wheel points up and to the right, it’s a “right” wheel, and up and to the left would be a “left” wheel.
The configuration of these “right” and “left” wheels is important to a mecanum drive system! Be aware that the “right” wheel should not mean that it goes on the right side of your robot. The proper configuration would be to have the wheels create an “X” pattern when viewing your robot from above and drawing lines parallel to the rollers as viewed.
This means that a “right” wheel would be in the FRONT RIGHT, and the REAR LEFT position, while the “left” wheel would be in the FRONT LEFT, and REAR RIGHT, of your robot when viewed from above. All 4 wheels are required to make a Mecanum drive holonomic system work properly.
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