{"product_id":"military-helicopter-turboshaft-engine","title":"Military Helicopter Turboshaft Engine","description":"\u003cp\u003eBuild a 1\/4 scale helicopter turboshaft engine and then run it. More than 470 aluminum alloy and stainless steel parts come together into a motor-driven display piece.\u003c\/p\u003e\u003ch3\u003eAbout this kit\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e470+ aluminum alloy and stainless steel parts\u003c\/li\u003e\n\u003cli\u003eScale 1\/4; finished size 11.5 x 4.7 x 7.8 in (29.2 x 11.9 x 19.8 cm), about 6.6 lb (3.0 kg)\u003c\/li\u003e\n\u003cli\u003eMotor-driven, powered by a 3.7V 800mAh lithium battery with USB charging\u003c\/li\u003e\n\u003cli\u003eAbout 2 hours to charge for about 30 minutes of run time\u003c\/li\u003e\n\u003cli\u003eTools and manual included\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eThe real thing\u003c\/h3\u003e\u003cp\u003eA turboshaft engine is a gas turbine tuned to deliver shaft power rather than jet thrust. It has a gas generator (compressor, combustion chambers, turbine) and a power section that drives an output shaft, which is how helicopters turn their rotors. The Kaman K-225 flew on December 11, 1951 as the first turboshaft-powered helicopter.\u003c\/p\u003e\u003ch3\u003eWhat to know\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSkill level: difficulty 4 of 5; 4+ hours to assemble\u003c\/li\u003e\n\u003cli\u003eAges 14+\u003c\/li\u003e\n\u003cli\u003eContains a lithium battery; charge with the supplied USB cable and do not leave it charging unattended\u003c\/li\u003e\n\u003cli\u003eMade to order: ships from our specialty supplier in about 2-3 weeks. US shipping.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Metal Time Workshop","offers":[{"title":"Default Title","offer_id":50549516402850,"sku":"DM136","price":430.32,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/1875\/4210\/files\/4-2026-03-31T133321.859_e709fc60-75cb-4761-a9b0-954c6aab5f87.jpg?v=1790731390","url":"https:\/\/shoptinkertown.com\/products\/military-helicopter-turboshaft-engine","provider":"TinkerTown","version":"1.0","type":"link"}