![]() Includes: Track with high traction surface Tug-of-War and Tractor Pull Car Kits (12 W X 48 in. They can try to move the greatest weight or pull another vehicle across the threshold. By altering gear ratios, vehicle weight, traction systems and wheel sizes student s build vehicles with the greatest pulling power. 1 KELVIN EDUCATIONAL TUG-OF-WAR ROBOTICS TUG OF WAR: The first team that pulls the other one over the line is the winner! WAR TUG OF KELVIN Tug-of-War & Tractor Lift Competition with Track Classmates can compete directly against each other with the Kelvin Tug-of War Activity or they can compete indirectly with the Kelvin Tractor Pull.
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