{"product_id":"gear-combination-kit-hand-cranked-gears-chain-belt-worm-drive-stem-model","title":"Gear Combination Kit – Hand-Cranked Gears, Chain, Belt \u0026 Worm Drive STEM Model","description":"\u003ch2\u003eFive transmission mechanisms on one base\u003c\/h2\u003e\n\u003cp\u003eBuild a hand-cranked model that brings spur gears, bevel gears, a chain drive, a belt drive and a worm drive together. Watch how different mechanisms transfer rotation and change shaft direction through a hands-on mechanical assembly.\u003c\/p\u003e\n\u003ch3\u003eExplore and learn\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eObserve the direction of adjacent externally meshing gears\u003c\/li\u003e\n\u003cli\u003eCompare the motion of different-sized gears, sprockets and pulleys under similar input conditions\u003c\/li\u003e\n\u003cli\u003eSee how bevel gears transfer rotation between differently oriented shafts\u003c\/li\u003e\n\u003cli\u003eCompare chain, belt and worm-drive arrangements\u003c\/li\u003e\n\u003cli\u003ePractise assembly, alignment and mechanical troubleshooting\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIllustrated components\u003c\/h3\u003e\n\u003cp\u003eBase sections and joining parts, supports, long and short shafts, spur and bevel gears, sprockets and yellow chain links, pulleys with an O-ring belt, a worm, crank handle and sleeve. Exact quantities and supplied version should be checked against the packing list.\u003c\/p\u003e\n\u003ch3\u003eAssembly overview\u003c\/h3\u003e\n\u003cp\u003eJoin the base sections and mount the main supports and shafts. Fit the illustrated gears and sprockets, snap the chain links into a loop and fit the chain. Mount the bevel-gear shafts, pulleys and O-ring belt, then align the worm with its mating gear. Fit the crank and turn slowly to check all moving parts. Use the supplied assembly diagrams for hole positions and orientation.\u003c\/p\u003e\n\u003cp\u003eThis is a manually operated teaching model, not a powered machine or load-bearing device. Exact ratios, torque, dimensions, weight and load capacity have not been verified.\u003c\/p\u003e\n\u003ch3\u003eCare and safety\u003c\/h3\u003e\n\u003cp\u003eContains small parts; assemble with adult guidance and keep away from young children. Keep fingers, hair and clothing clear of gears, chain and belt. Stop and check alignment if it jams; do not force the crank, attach loads or add a powered drive.\u003c\/p\u003e","brand":"RetroMakerKits by innoelement","offers":[{"title":"Default Title","offer_id":67621212356691,"sku":null,"price":10.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/0891\/1443\/files\/O1CN01asoIl81HQSo6To8RS__377280752.webp?v=1791426746","url":"https:\/\/www.retromakerkits.com\/products\/gear-combination-kit-hand-cranked-gears-chain-belt-worm-drive-stem-model","provider":"RetroMakerKits by innoelement","version":"1.0","type":"link"}