About this item:
This molded plastic bicycle wheel gyroscope is durably constructed and more resistant to distortion than a spoked wheel. Convincing demonstrations of the gyroscopic forces can be made using a rotating platform and the grooved hub and starting cord make accelerating the gyroscope to a sufficient speed easy. Features free-running bicycle bearings for long-duration runs. *Only includes bicycle wheel and string with handle.
 
Specifications
Wheel Diameter: 50cm
Wheel Width: 3.5cm
Hub Diameter: 5.3cm
Width across Handles: 33cm
Weight: 2.0kg
Moment of Inertia: approx. 0.07kgm2