The micro plastic gearmotor’s output shaft works with with our 14 mm wheels. We do not have any brackets because of this gearmotor, and it does not have any installation holes, but its small size makes it easy to fasten with tape or glue. Additionally, since this gearmotor can be nearly the same size as a 1/4″ fuse, it could be mounted using regular 1/4″ (6 mm) fuse clips.
The next diagram shows the micro plastic gearmotor dimensions in mm. The planetary gearbox has a D-shaped plastic result shaft, which is 2 mm in diameter with a section that’s flattened by 0.5 mm. The “D” part of the shaft is 2.5 mm long. The motor steps 6 mm in diameter and 9 mm long, and the gearbox size, labeled “L” in the diagram below, Micro Planetary Gear Motor depends on the gear ratio. The 26:1 gearbox can be 7.1 mm long, as the 136:1 option procedures 9.4 mm. The engine leads come with their ideas pre-stripped and extend around 2 cm (0.8″) from the trunk of the motor.
Because the gearmotor’s output shaft is nylon, there can be small variances in the diameter from unit to unit. These variations may cause press-suit attachments like our 14 mm wheel to match loosely occasionally. If you experience a loose fitting, you could try swapping tires or using a small dab of glue to greatly help hold the wheel on.