Hint M8 - K'NEX Control motor
The K'NEX control motor is manufactured by taking a K'NEX Tethered battery motor, removing the red battery box, and adding a 4mm jack plug to the end of each wire.
The jack plugs should then be connected to a suitable 3v power supply to operate the motor.
The control motor is ideal for use with control devices such as Flowgo and Egg-Box.
K'NEX control motors can be bought in our K'NEX shop.
The photo shows one way in which a control motor may be attached to a K'NEX model.
Handy Hint M2 gives more detail on how to use the motor to drive K'NEX models.