{"product_id":"nuicent-minii-existing-customer-speed-conversion-upgrade","title":"NuiCent 31YZ 12-Variant Speed + Gyro Pack — STEP\/STL","description":"\n\u003cp\u003e\u003cstrong\u003eNuiCent 31YZ 12-Variant Speed + Gyro Pack\u003c\/strong\u003e — choose one development configuration for \u003cstrong\u003e£19.99\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eEach purchase now delivers a \u003cstrong\u003evariant-specific ZIP\u003c\/strong\u003e containing the matching gyro plates, labelled STEP assembly, setup\/commissioning manual, fit coupons and shared N20 centre-mount reference.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGyro\/carrier size families: \u003cstrong\u003e70 cm (700 mm), 100 cm (1000 mm), 130 cm (1300 mm)\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eGyro speed targets: \u003cstrong\u003e700 rpm or 1,400 rpm\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e31YZ shaft targets: \u003cstrong\u003e4,000 rpm or 8,000 rpm\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eN20\/centre-drive study choices: \u003cstrong\u003e60 \/ 90 \/ 120 rpm\u003c\/strong\u003e using the shared floating\/freewheel mount geometry.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThat gives \u003cstrong\u003e12 selectable configurations\u003c\/strong\u003e. The plate geometry changes with the 70\/100\/130 cm family. The speed settings use their own configuration\/manual information and must be verified by measured RPM on the physical build.\u003c\/p\u003e\n\u003ch3\u003eWhat the selected variant includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe matching \u003cstrong\u003etop and bottom 4 × 31YZ gyro plates\u003c\/strong\u003e in STEP\/STL for the selected 70 cm, 100 cm or 130 cm family.\u003c\/li\u003e\n\u003cli\u003eThe matching labelled 16 × 31YZ assembly STEP reference.\u003c\/li\u003e\n\u003cli\u003eA manual labelled for the selected \u003cstrong\u003egyro RPM\u003c\/strong\u003e and \u003cstrong\u003e31YZ shaft RPM\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e31.2 mm 31YZ body-fit and 3.1 mm shaft-alignment coupons.\u003c\/li\u003e\n\u003cli\u003eShared N20 60\/90\/120 rpm centre-mount geometry reference.\u003c\/li\u003e\n\u003cli\u003eFit, balance, RPM, belt\/pulley and electrical measurement checklist.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e the 700\/1,400 rpm gyro and 4,000\/8,000 rpm 31YZ figures are test targets, not certified safe-speed ratings or guaranteed outputs. Final pulley tooth counts must be selected\/verified from the real driver speed and confirmed with a tachometer under load.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePrice: £19.99 for one selected configuration.\u003c\/strong\u003e The \u003cstrong\u003e£99.99 Complete 12-Variant Bundle\u003c\/strong\u003e contains all twelve purchaser-specific packs plus the shared extras.\u003c\/p\u003e\n\u003ch3\u003eTwo 3600 mm main-belt reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2 × nominal 3600 mm GT2 main belts remain two independent closed loops.\u003c\/li\u003e\n\u003cli\u003eFinishedNew mechanical\/belt-route references remain the M4 authority for locks, idlers and the two-level main-belt route.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eEngineering status\u003c\/h3\u003e\n\u003cp\u003eThese are experimental development files. Verify fit, balance, belt tracking, gyro RPM, 31YZ RPM, mechanical loads, electrical input and electrical output on the physical build. Use suitable guarding, retained fasteners, current limiting and an emergency stop.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNuiCent Gen by Will Cole.\u003c\/strong\u003e\u003c\/p\u003e","brand":"NuiCent Perpetual Generator","offers":[{"title":"70 cm \/ gyro 700 rpm \/ 31YZ 4,000 rpm","offer_id":59788236587333,"sku":"NCM-70-G700-4K-R1","price":19.99,"currency_code":"GBP","in_stock":true},{"title":"70 cm \/ gyro 700 rpm \/ 31YZ 8,000 rpm","offer_id":59788236620101,"sku":"NCM-70-G700-8K-R1","price":19.99,"currency_code":"GBP","in_stock":true},{"title":"130 cm \/ gyro 700 rpm \/ 31YZ 4,000 rpm","offer_id":59788236718405,"sku":"NCM-130-G700-4K-R1","price":19.99,"currency_code":"GBP","in_stock":true},{"title":"130 cm \/ gyro 700 rpm \/ 31YZ 8,000 rpm","offer_id":59788236751173,"sku":"NCM-130-G700-8K-R1","price":19.99,"currency_code":"GBP","in_stock":true},{"title":"100 cm \/ gyro 700 rpm \/ 31YZ 4,000 rpm","offer_id":59792171336005,"sku":"NCM-100-G700-4K-R1","price":19.99,"currency_code":"GBP","in_stock":true},{"title":"100 cm \/ gyro 700 rpm \/ 31YZ 8,000 rpm","offer_id":59792171368773,"sku":"NCM-100-G700-8K-R1","price":19.99,"currency_code":"GBP","in_stock":true},{"title":"70 cm \/ gyro 1,400 rpm \/ 31YZ 4,000 rpm","offer_id":59847272825157,"sku":"NCM-70-G1400-4K-R1","price":19.99,"currency_code":"GBP","in_stock":false},{"title":"70 cm \/ gyro 1,400 rpm \/ 31YZ 8,000 rpm","offer_id":59847272857925,"sku":"NCM-70-G1400-8K-R1","price":19.99,"currency_code":"GBP","in_stock":false},{"title":"100 cm \/ gyro 1,400 rpm \/ 31YZ 4,000 rpm","offer_id":59847272890693,"sku":"NCM-100-G1400-4K-R1","price":19.99,"currency_code":"GBP","in_stock":false},{"title":"100 cm \/ gyro 1,400 rpm \/ 31YZ 8,000 rpm","offer_id":59847272923461,"sku":"NCM-100-G1400-8K-R1","price":19.99,"currency_code":"GBP","in_stock":false},{"title":"130 cm \/ gyro 1,400 rpm \/ 31YZ 4,000 rpm","offer_id":59847272956229,"sku":"NCM-130-G1400-4K-R1","price":19.99,"currency_code":"GBP","in_stock":false},{"title":"130 cm \/ gyro 1,400 rpm \/ 31YZ 8,000 rpm","offer_id":59847272988997,"sku":"NCM-130-G1400-8K-R1","price":19.99,"currency_code":"GBP","in_stock":false}],"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-minii-existing-customer-speed-conversion-upgrade","provider":"NuiCent Perpetual Generator ","version":"1.0","type":"link"}