{"product_id":"egodrift-tengu-4730ec-eclipse-motor","title":"Egodrift Tengu 4730EC Eclipse 700 Class Helicopter Motor","description":"\u003cdiv style=\"background-color:#171717;color:#ffffff;padding:24px;border-radius:8px;\"\u003e\n\n  \u003ch2 style=\"color:#f58220;margin-top:0;\"\u003eEgodrift Tengu 4730EC Eclipse Helicopter Motor\u003c\/h2\u003e\n  \u003cp\u003e\n    Power your 700 class RC helicopter with the Egodrift Tengu 4730EC Eclipse\n    brushless motor. Available in 540Kv and 570Kv, both versions offered here\n    feature a 6 × 35 mm external shaft.\n  \u003c\/p\u003e\n  \u003cp\u003e\n    Built around Egodrift’s custom 47 mm stator with 0.1 mm laminations, the\n    4730EC Eclipse features a reinforced 8 mm internal shaft and larger bearings.\n    Egodrift designed this generation to reduce eddy-current losses and improve\n    torque delivery, throttle response, and efficiency.\n  \u003c\/p\u003e\n\n  \u003ch3 style=\"color:#f58220;\"\u003eChoose Your Motor Kv\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n      \u003cstrong\u003e540Kv — EGO-11973:\u003c\/strong\u003e\n      The lower-speed winding for builds targeting a lower head speed with\n      the same battery voltage and gearing.\n    \u003c\/li\u003e\n    \u003cli\u003e\n      \u003cstrong\u003e570Kv — EGO-11992:\u003c\/strong\u003e\n      Approximately 5.6% higher theoretical motor speed than 540Kv at the same\n      voltage, providing additional speed range for higher head-speed targets.\n    \u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003e\n    Select Kv and pinion together to match your intended head speed while\n    retaining governor headroom.\n  \u003c\/p\u003e\n\n  \u003ch3 style=\"color:#f58220;\"\u003eGoosky RS7 Ultra — Stock Gearing\u003c\/h3\u003e\n  \u003cp\u003e\n    The RS7 Ultra uses a 116T main gear and standard 13T motor pinion,\n    giving an 8.923:1 main reduction ratio.\n  \u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003e540Kv:\u003c\/strong\u003e Calculated head speed of approximately \u003cstrong\u003e2,210 RPM\u003c\/strong\u003e.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003e570Kv:\u003c\/strong\u003e Calculated head speed of approximately \u003cstrong\u003e2,330 RPM\u003c\/strong\u003e.\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003e\n    With the stock gearing on 12S, 540Kv is our suggested starting choice\n    for a target near 2,200 RPM. Choose 570Kv when targeting around 2,300 RPM.\n  \u003c\/p\u003e\n\n  \u003ch3 style=\"color:#f58220;\"\u003eXLPower Stratos 700 — With a 13T Pinion\u003c\/h3\u003e\n  \u003cp\u003e\n    Using the Stratos 700’s 125T main gear with a 13T motor pinion gives\n    a 9.615:1 main reduction ratio.\n  \u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003e540Kv:\u003c\/strong\u003e Calculated head speed of approximately \u003cstrong\u003e2,050 RPM\u003c\/strong\u003e.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003e570Kv:\u003c\/strong\u003e Calculated head speed of approximately \u003cstrong\u003e2,160 RPM\u003c\/strong\u003e.\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003e\n    With this gearing on 12S, 540Kv is our suggested starting choice for\n    targets around 2,000 RPM. Choose 570Kv for additional speed range\n    around 2,100–2,150 RPM.\n  \u003c\/p\u003e\n\n  \u003ch3 style=\"color:#f58220;\"\u003eHead-Speed Calculation Basis\u003c\/h3\u003e\n  \u003cp\u003e\n    The estimates above use 12S at 3.8V per cell and 80% ESC output, following\n    Egodrift’s calculator guidance. These are calculated reference values,\n    not guaranteed governed speeds. Actual results depend on battery voltage\n    under load, ESC governor behavior, blades, and flight load.\n  \u003c\/p\u003e\n\n  \u003ch3 style=\"color:#f58220;\"\u003eSpecifications\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Egodrift\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMotor family:\u003c\/strong\u003e Tengu 4730EC Eclipse\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAvailable windings:\u003c\/strong\u003e 540Kv and 570Kv\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eStator dimensions:\u003c\/strong\u003e 47 mm diameter × 30 mm height\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eStator lamination thickness:\u003c\/strong\u003e 0.1 mm\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMotor configuration:\u003c\/strong\u003e 12N10P — 10 magnetic poles\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eExternal shaft:\u003c\/strong\u003e 6 mm diameter × 35 mm length\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eInternal shaft diameter:\u003c\/strong\u003e 8 mm\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMounting pattern:\u003c\/strong\u003e Four M4 holes on a 30 mm bolt circle\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMotor body diameter:\u003c\/strong\u003e 58.4 mm\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMotor body length, excluding shaft:\u003c\/strong\u003e 58 mm\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3 style=\"color:#f58220;\"\u003eInstallation \u0026amp; Fitment\u003c\/h3\u003e\n  \u003cp\u003e\n    Before ordering, confirm clearance for the 58.4 mm motor body, mounting-hole\n    alignment, and engagement of your pinion and any motor-shaft support bearing.\n    Model-specific gearing recommendations do not replace checking the physical\n    installation requirements of your helicopter.\n  \u003c\/p\u003e\n\n  \u003ch3 style=\"color:#f58220;\"\u003eWhat’s Included\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eOne Tengu 4730EC Eclipse motor in your selected Kv with a 6 × 35 mm shaft\u003c\/li\u003e\n    \u003cli\u003eThree pairs of gold-plated Amass bullet connectors\u003c\/li\u003e\n    \u003cli\u003eMounting screws — verify the correct length for your motor mount\u003c\/li\u003e\n    \u003cli\u003eTwo Egodrift decal sheets\u003c\/li\u003e\n    \u003cli\u003eIndividual Certificate of Authenticity\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3 style=\"color:#f58220;\"\u003eMotor \u0026amp; Gearing Setup Support\u003c\/h3\u003e\n  \u003cp\u003e\n    Compare motor Kv, battery cell count, main gear, pinion, and ESC output\n    with Egodrift’s Headspeed Calculator. Use it to explore your target rotor\n    speed before choosing a winding or changing gearing.\n  \u003c\/p\u003e\n  \u003cp\u003e\n    Egodrift recommends using 3.8V per cell and aiming for approximately 80%\n    ESC output as a starting point, allowing room for governor regulation.\n  \u003c\/p\u003e\n  \u003cp\u003e\n    \u003ca href=\"https:\/\/egodrift.com\/pages\/headspeed-calculator\" target=\"_blank\" rel=\"noopener noreferrer\" style=\"display:inline-block;background-color:#f58220;color:#171717;padding:12px 18px;border-radius:4px;font-weight:bold;text-decoration:none;\"\u003e\n      Calculate Your Head Speed\n    \u003c\/a\u003e\n  \u003c\/p\u003e\n\n  \u003ch3 style=\"color:#f58220;\"\u003eFrequently Asked Questions\u003c\/h3\u003e\n  \u003cp\u003e\n    \u003cstrong\u003eWhich Kv should I choose?\u003c\/strong\u003e\u003cbr\u003e\n    Choose based on your battery voltage, gearing, and target head speed.\n    With identical gearing and voltage, 570Kv produces approximately 5.6%\n    more theoretical motor speed than 540Kv.\n  \u003c\/p\u003e\n  \u003cp\u003e\n    \u003cstrong\u003eDo both variants have the same shaft?\u003c\/strong\u003e\u003cbr\u003e\n    Yes. Both motor variants offered on this page have a 6 × 35 mm external shaft.\n  \u003c\/p\u003e\n  \u003cp\u003e\n    \u003cstrong\u003eIs the internal shaft also 6 mm?\u003c\/strong\u003e\u003cbr\u003e\n    No. The reinforced internal shaft is 8 mm in diameter; the external\n    pinion-mounting section is 6 mm.\n  \u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"Egodrift","offers":[{"title":"540Kv","offer_id":44558402322510,"sku":"EGO-11973","price":529.0,"currency_code":"USD","in_stock":false},{"title":"570Kv","offer_id":44558402355278,"sku":"EGO-11992","price":529.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0582\/8558\/8558\/files\/4730ec-eclipse-choose-kv-main_2.jpg?v=1759772208","url":"https:\/\/newenglandrc.us\/products\/egodrift-tengu-4730ec-eclipse-motor","provider":"New England RC","version":"1.0","type":"link"}