{"product_id":"jet-boat-experiment-kit-diy-water-jet-propulsion-buoyancy-stem-boat","title":"Jet Boat Experiment Kit – DIY Water-Jet Propulsion \u0026 Buoyancy STEM Boat","description":"\u003ch2\u003eBuild a boat powered by a backward water jet\u003c\/h2\u003e\u003cp\u003eAssemble a motor-driven jet boat and explore Newton’s third law, buoyancy, centrifugal pumping, rudder steering and simple circuits. The impeller sends water backward through the spray tube; the reaction force pushes the boat forward. The hollow hull provides buoyancy, and the pointed bow helps reduce water resistance.\u003c\/p\u003e\u003ch3\u003eAssembly and experiments\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003eConnect the motor, switch and battery contacts with the red and black wires, following the illustrated polarity markings.\u003c\/li\u003e\n\u003cli\u003eFit the motor in the hull, press the impeller onto the shaft and install the impeller cover and spray tube.\u003c\/li\u003e\n\u003cli\u003eInstall the contact plates, battery cover and pressure blocks. Secure the parts with the supplied screws.\u003c\/li\u003e\n\u003cli\u003eFit the steering wheel from above and the rudder from below. The steering is manual, not motor-driven; this is not a remote-control boat.\u003c\/li\u003e\n\u003cli\u003ePlace the boat in a shallow basin before switching on. Change the rudder angle and spray-tube direction to compare the boat’s path.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eIllustrated parts list\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eHull, rudder, battery cover, impeller, motor, steering wheel and impeller cover: 1 each\u003c\/li\u003e\n\u003cli\u003ePressure blocks: 2; decorative sticker: 1; screwdriver: 1\u003c\/li\u003e\n\u003cli\u003eRed wires: 2; black wire: 1; switch: 1; water spray tube: 1\u003c\/li\u003e\n\u003cli\u003eScrew A: 3; screw B: 2\u003c\/li\u003e\n\u003cli\u003eNegative spring contact, positive\/negative contact plate and positive spring contact: 1 each\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eBattery powered. Follow the battery type and polarity markings on the supplied compartment and instructions. Batteries are not shown in the illustrated parts list; do not assume they are supplied.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eApproximate assembled dimensions: 170 × 100 × 65 mm\u003c\/li\u003e\n\u003cli\u003eListed product weight: approximately 210 g, excluding shipping packaging\u003c\/li\u003e\n\u003cli\u003eConstruction: plastic hull with motor, metal contacts and wiring\u003c\/li\u003e\n\u003cli\u003eSuggested age: 8+, with adult guidance; assembly required\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCare and safety\u003c\/h3\u003e\u003cp\u003eTest in a shallow sink, basin or tub, never in ponds, rivers or other open water. Put the boat in water before turning it on. Keep water out of the interior and fingers clear of moving parts. Switch off after use, remove the batteries for storage, and drain and dry the boat. Contains small parts; keep away from young children.\u003c\/p\u003e","brand":"RetroMakerKits by innoelement","offers":[{"title":"Default Title","offer_id":67621203148883,"sku":null,"price":10.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/0891\/1443\/files\/01_f62ef7a9-1efe-444e-b83d-9249e36027cd.jpg?v=1791426514","url":"https:\/\/www.retromakerkits.com\/products\/jet-boat-experiment-kit-diy-water-jet-propulsion-buoyancy-stem-boat","provider":"RetroMakerKits by innoelement","version":"1.0","type":"link"}