K'NEX Flywheel motor
Ref: 99238 (or 92860)
Weight (approx.) 106g
Fascinating K'NEX motor that operates from an internal flywheel. Pull back the string to start the flywheel spinning at high speed, then release it and watch the motor go!
Includes a built-in tyred wheel, and lugs to attach the motor to a K'NEX vehicle such as a dragster.