{"product_id":"nuicent-31yz-pick-your-speed-gyro-size-1","title":"NuiCent 31YZ — Pick Your Speed \u0026 Gyro Size","description":"\n\u003cp\u003e\u003cstrong\u003eNuiCent 31YZ — Pick Your Speed \u0026amp; Gyro Size\u003c\/strong\u003e is a standalone digital development package by Will Cole. Choose one configuration for \u003cstrong\u003e£19.99\u003c\/strong\u003e. No previous NuiCent purchase is required.\u003c\/p\u003e\n\n\u003ch3\u003e120 mm Mini carrier speed family\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eOption\u003c\/th\u003e\n\u003cth\u003eGyro\/carrier target\u003c\/th\u003e\n\u003cth\u003e31YZ shaft target\u003c\/th\u003e\n\u003cth\u003eT41 upper input\u003c\/th\u003e\n\u003cth\u003eT36 study input\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eL4\u003c\/td\u003e\n\u003ctd\u003e1,000 rpm\u003c\/td\u003e\n\u003ctd\u003e4,000 rpm\u003c\/td\u003e\n\u003ctd\u003e390 rpm\u003c\/td\u003e\n\u003ctd\u003e444 rpm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eL8\u003c\/td\u003e\n\u003ctd\u003e1,000 rpm\u003c\/td\u003e\n\u003ctd\u003e8,000 rpm\u003c\/td\u003e\n\u003ctd\u003e390 rpm\u003c\/td\u003e\n\u003ctd\u003e444 rpm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM4\u003c\/td\u003e\n\u003ctd\u003e2,000 rpm\u003c\/td\u003e\n\u003ctd\u003e4,000 rpm\u003c\/td\u003e\n\u003ctd\u003e780 rpm\u003c\/td\u003e\n\u003ctd\u003e889 rpm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM8\u003c\/td\u003e\n\u003ctd\u003e2,000 rpm\u003c\/td\u003e\n\u003ctd\u003e8,000 rpm\u003c\/td\u003e\n\u003ctd\u003e780 rpm\u003c\/td\u003e\n\u003ctd\u003e889 rpm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eH4\u003c\/td\u003e\n\u003ctd\u003e3,000 rpm\u003c\/td\u003e\n\u003ctd\u003e4,000 rpm\u003c\/td\u003e\n\u003ctd\u003e1,171 rpm\u003c\/td\u003e\n\u003ctd\u003e1,333 rpm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eH8\u003c\/td\u003e\n\u003ctd\u003e3,000 rpm\u003c\/td\u003e\n\u003ctd\u003e8,000 rpm\u003c\/td\u003e\n\u003ctd\u003e1,171 rpm\u003c\/td\u003e\n\u003ctd\u003e1,333 rpm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003e125 mm 4×31YZ gyro family\u003c\/h3\u003e\n\u003cp\u003eThe separate 125 mm development module uses a documented ideal local shaft ratio of about \u003cstrong\u003e2.6163:1\u003c\/strong\u003e. Reference points include about 1,338 rpm local input for about 3,500 rpm at the 31YZ shaft and about 1,530 rpm local input for about 4,000 rpm at the 31YZ shaft. The carrier's own orbital RPM is a separate measurement.\u003c\/p\u003e\n\n\u003ch3\u003eLarge-radius gyro scale studies\u003c\/h3\u003e\n\u003cp\u003eThe 70 cm, 100 cm and 130 cm options are \u003cstrong\u003econcept scale studies\u003c\/strong\u003e showing how distance from the centre changes rotational inertia and radial loading. They are treated as gyro diameters, giving nominal radii of 0.35 m, 0.50 m and 0.65 m.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eGyro diameter\u003c\/th\u003e\n\u003cth\u003eNominal radius\u003c\/th\u003e\n\u003cth\u003eRelative inertia*\u003c\/th\u003e\n\u003cth\u003eRelative radial load*\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e70 cm\u003c\/td\u003e\n\u003ctd\u003e0.35 m\u003c\/td\u003e\n\u003ctd\u003e1.00×\u003c\/td\u003e\n\u003ctd\u003e1.00×\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e100 cm\u003c\/td\u003e\n\u003ctd\u003e0.50 m\u003c\/td\u003e\n\u003ctd\u003e2.04×\u003c\/td\u003e\n\u003ctd\u003e1.43×\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e130 cm\u003c\/td\u003e\n\u003ctd\u003e0.65 m\u003c\/td\u003e\n\u003ctd\u003e3.45×\u003c\/td\u003e\n\u003ctd\u003e1.86×\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003csmall\u003e*For the same rotating mass distribution and the same RPM, using the usual point-mass radius relationships. Larger radius can store more rotational energy and resist short speed changes more strongly, which may help smooth a handover\/repeat cycle, but it also takes more energy to accelerate and increases structural and bearing loads. It does not create extra energy.\u003c\/small\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e31YZ shaft RPM is set by the drive ratio, not by gyro diameter alone.\u003c\/strong\u003e The 70\/100\/130 cm studies therefore do not claim a fixed generator-shaft speed until matching gearing and CAD are defined.\u003c\/p\u003e\n\n\u003ch3\u003eWhat the selected package is for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMatching CAD\/reference material where already supplied for that configuration.\u003c\/li\u003e\n\u003cli\u003e31YZ speed, pulley and ratio calculations.\u003c\/li\u003e\n\u003cli\u003eGyro-size \/ radius comparison and development notes.\u003c\/li\u003e\n\u003cli\u003eBelt-route, pulley-fit and build-reference material where available.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eDevelopment status:\u003c\/strong\u003e RPM values are prototype targets or calculated references, not certified motor ratings or guaranteed measured operating speeds. The 70\/100\/130 cm options are scale studies only until matching physical CAD and structural validation are completed.\u003c\/p\u003e\n\u003cp\u003eDigital files only. Motors, bearings, belts, fasteners and electronics are not included.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNuiCent Gen by Will Cole.\u003c\/strong\u003e\u003c\/p\u003e\n","brand":"NuiCent Perpetual Generator","offers":[{"title":"120 mm L4 — Gyro 1000 \/ 31YZ 4000","offer_id":59847246741829,"sku":"NCM-31YZ-120-L4","price":19.99,"currency_code":"GBP","in_stock":true},{"title":"120 mm L8 — Gyro 1000 \/ 31YZ 8000","offer_id":59847246774597,"sku":"NCM-31YZ-120-L8","price":19.99,"currency_code":"GBP","in_stock":true},{"title":"120 mm M4 — Gyro 2000 \/ 31YZ 4000","offer_id":59847246807365,"sku":"NCM-31YZ-120-M4","price":19.99,"currency_code":"GBP","in_stock":true},{"title":"120 mm M8 — Gyro 2000 \/ 31YZ 8000","offer_id":59847246840133,"sku":"NCM-31YZ-120-M8","price":19.99,"currency_code":"GBP","in_stock":true},{"title":"120 mm H4 — Gyro 3000 \/ 31YZ 4000","offer_id":59847246872901,"sku":"NCM-31YZ-120-H4","price":19.99,"currency_code":"GBP","in_stock":true},{"title":"120 mm H8 — Gyro 3000 \/ 31YZ 8000","offer_id":59847246905669,"sku":"NCM-31YZ-120-H8","price":19.99,"currency_code":"GBP","in_stock":true},{"title":"125 mm — 31YZ 3500 rpm target","offer_id":59847246938437,"sku":"NCM-31YZ-125-35","price":19.99,"currency_code":"GBP","in_stock":true},{"title":"125 mm — 31YZ 4000 rpm target","offer_id":59847246971205,"sku":"NCM-31YZ-125-40","price":19.99,"currency_code":"GBP","in_stock":true},{"title":"70 cm gyro diameter — radius\/inertia scale study","offer_id":59847247003973,"sku":"NCM-31YZ-700-STUDY","price":19.99,"currency_code":"GBP","in_stock":true},{"title":"100 cm gyro diameter — radius\/inertia scale study","offer_id":59847247036741,"sku":"NCM-31YZ-1000-STUDY","price":19.99,"currency_code":"GBP","in_stock":true},{"title":"130 cm gyro diameter — radius\/inertia scale study","offer_id":59847247069509,"sku":"NCM-31YZ-1300-STUDY","price":19.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1106\/4773\/8693\/files\/NuiCent-31YZ-Speed-Pulley-Study.png?v=1792631607","url":"https:\/\/nuicent.com\/products\/nuicent-31yz-pick-your-speed-gyro-size-1","provider":"NuiCent Perpetual Generator ","version":"1.0","type":"link"}