Hint M14 - Flywheel motor
The K'NEX Flywheel motor may be attached to a model by fixing it between two 8-way white connectors, as shown in the photo.
To use the motor:
1. Lift the model off the ground.
2. Hold the flywheel motor firmly in one hand.
3. With other hand, pull back the string quickly several times, to its full extent.
4. Place the model carefully onto the ground, and watch it race away.
You may have to experiment with different surfaces to get the best out of your flywheel motor (eg carpet, smooth flooring).