2mm Shaft Adapter for LEGO Wheels (Pair)
This adapter allows the Pololu 120:1 mini plastic gearmotors (offset output and 90-degree output) and the Solarbotics GM6 and GM7 gearmotors to be connected to LEGO’s wide variety of high-quality wheels. The adapters are sold in pairs.
Alternatives available with variations in these parameter(s): shaft diameter
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This adapter makes it possible to use LEGO wheels with the Pololu 120:1 mini plastic gearmotors (offset output and 90-degree output) and the Solarbotics GM6 and GM7 gearmotors. These are great motors for building small robots, and LEGO makes a number of very high-quality wheels as part of their Technic and Mindstorms product lines, many of which would also be excellent for use on a small robot. With this adapter, you can integrate LEGO wheels of your choice into a robot. We sell the adapters in pairs, so that you can make a two-wheeled robot.
- Fit the adapter onto the metal output shaft of one of the four gearmotors linked above. You will need to push quite hard; be careful not to damage the gearmotor.
- Slide the adapter into a LEGO wheel of your choice.
The adapter fits very tightly to the metal axle of the gearmotor, so that it will remain attached to the gearmotor when the wheel is removed. We recommend that you leave the adapter permanently attached to the metal axle; repeated removal and insertion may loosen the connection, causing slippage.
The adapter is made of ABS plastic, similar to the plastic used in LEGO blocks. Its dimensions are shown in the following picture:
The adapter can be used with any LEGO wheel that accepts a standard axle, as long as the tire does not extend more than 0.35" beyond the inner edge of the hub so that the motor body will not rub against the tire.
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