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potentiometer and Bluetooth module
Proto MAX(TM) metal knuckle couplers
Fuel tank end cage with separate plastic frame and wire grabirons
SXT40993 Car #760923
Loose parts
PATHFINDERS STEM kit Medieval Catapult potentiometer and Bluetooth moduleThe catapult has a long and interesting history. It has been around in many forms, evolving since about 400 BC. This model is based on the medieval styles that were used during the middle ages. Standing 15 cm tall and 12 cm wide, this siege engine can shoot a plasticine ball over 15 feet! Adjustable pads on the crossbar allow you to change the trajectory angle. The rope, strung through the middle gives great power to the swing arm! Easy to make in
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