KiwiCo Kiwi Crate Science Kit Record Racer Building set Engineering racetrack tr

KiwiCo Kiwi Crate Science Kit Record Racer Building set Engineering racetrack track Used set - put together one time, tested, and disassembled. All parts included. Race and dodge obstacles with a mechanical racing game you engineer yourself. Construct a spinning racetrack with a potentiometer that lets you control the spinning speed. Topics explored: gears & linkages, electronics, and mechanical video games Comes from a pet-free and smoke-free home. Fast shipping. Trusted Seller = Buy with confidence.