The Trestle Propulsion Principle:
TRESTLE: A flat surface suspended by two or more legs.
PROPULSION: The action of driving or pushing an object forward.
PRINCIPLE: A natural law that forms the basis for the functioning of a machine or system.
With Trestle Tracks, these three concepts work together to create an innovative marble run experience like no other. Each track has an opening that gradually widens from one end to the other. When placed on this opening, the ball perpetually falls forward, transforming the force of gravity into a unique form of propulsion. Using this principle and the easy to stack risers, young engineers are able to build endless variations of kinetic fascination. A step-by-step building guide is included and multiple / different sets can be combined. Get creative and discover the wonders of simple engineering. Box Size approx. 15cm x 13cm