{"product_id":"egodrift-tengu-4025ec-eclipse-motor","title":"Egodrift Tengu 4025EC Eclipse Brushless 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 4025EC Eclipse Brushless Motor\u003c\/h2\u003e\n  \u003cp\u003e\n    The Egodrift Tengu 4025EC Eclipse combines a custom 40 mm stator\n    with tailored arc magnets in a motor platform suited to\n    500–550 class RC helicopters and selected F3A drive applications.\n  \u003c\/p\u003e\n  \u003cp\u003e\n    For helicopter builders, the 1080Kv winding provides a 6S option\n    in the shorter 4025 motor size. Select your winding, shaft\n    configuration, and pinion to suit the installation and target\n    head speed.\n  \u003c\/p\u003e\n\n  \u003ch3 style=\"color:#f58220;\"\u003eChoose Your Motor Winding\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n      \u003cstrong\u003e1080Kv — EGO-11966:\u003c\/strong\u003e\n      Our 6S helicopter option for appropriately geared 500–550\n      class builds.\n    \u003c\/li\u003e\n    \u003cli\u003e\n      \u003cstrong\u003e550Kv — EGO-11964:\u003c\/strong\u003e\n      Egodrift identifies this winding for F3A and helicopter\n      applications. Match battery voltage and gearing to the\n      requirements of your complete drive system.\n    \u003c\/li\u003e\n    \u003cli\u003e\n      \u003cstrong\u003e650Kv — EGO-11965:\u003c\/strong\u003e\n      Egodrift identifies this winding for F3A applications.\n      Confirm compatibility with your specific drive system.\n    \u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3 style=\"color:#f58220;\"\u003eOMP M5 — Motor Size Guidance\u003c\/h3\u003e\n  \u003cp\u003e\n    \u003cstrong\u003eThe 4025 size is our recommended maximum motor size\n    for clearance beneath the OMP M5’s standard canopy.\u003c\/strong\u003e\n    The larger Tengu 4030EC Eclipse interferes with the canopy.\n  \u003c\/p\u003e\n  \u003cp\u003e\n    Choose the 1080Kv winding for a suitably geared 6S build.\n    Confirm mounting-hole alignment, shaft length, pinion engagement,\n    and clearance throughout the installation.\n  \u003c\/p\u003e\n\n  \u003ch3 style=\"color:#f58220;\"\u003eOther 500–550 Class Helicopters\u003c\/h3\u003e\n  \u003cp\u003e\n    Consider the 4025EC Eclipse where the helicopter calls for a\n    4025-size motor and its mounting and shaft requirements match.\n    Calculate head speed using the actual main gear and motor\n    pinion fitted to your model.\n  \u003c\/p\u003e\n  \u003cp\u003e\n    Motor size alone does not establish compatibility. Check the\n    complete installation before ordering.\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 4025EC Eclipse\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWinding options on this listing:\u003c\/strong\u003e 550Kv, 650Kv, and 1080Kv\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eStator dimensions:\u003c\/strong\u003e 40 mm diameter × 25 mm height\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 diameter:\u003c\/strong\u003e 6 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 50.2 mm\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMotor body length, excluding shaft:\u003c\/strong\u003e 52.2 mm\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3 style=\"color:#f58220;\"\u003eShaft Selection \u0026amp; Installation\u003c\/h3\u003e\n  \u003cp\u003e\n    Egodrift manufactures this motor family with different external\n    shaft lengths for helicopter and F3A applications. Confirm the\n    shaft length of your selected variant against your installation\n    requirements before ordering.\n  \u003c\/p\u003e\n  \u003cp\u003e\n    Verify mounting-screw length, motor-body clearance, and pinion\n    engagement. Where a shaft-support bearing is fitted, confirm\n    correct engagement and alignment.\n  \u003c\/p\u003e\n\n  \u003ch3 style=\"color:#f58220;\"\u003eMotor \u0026amp; Gearing Setup Support\u003c\/h3\u003e\n  \u003cp\u003e\n    Use Egodrift’s Headspeed Calculator to compare battery cell count,\n    motor Kv, main gear, pinion, and ESC output before selecting\n    your helicopter setup.\n  \u003c\/p\u003e\n  \u003cp\u003e\n    Egodrift recommends calculating at 3.8V per cell and aiming for\n    approximately 80% ESC output as a starting point for governor\n    headroom. Calculated head speeds are estimates; actual results\n    depend on battery condition, governor behavior, and flight load.\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 winding should I consider for a 6S helicopter?\u003c\/strong\u003e\u003cbr\u003e\n    The 1080Kv winding, with gearing selected for your target\n    head speed and model requirements.\n  \u003c\/p\u003e\n  \u003cp\u003e\n    \u003cstrong\u003eShould I choose the 4025EC or 4030EC for an OMP M5?\u003c\/strong\u003e\u003cbr\u003e\n    Choose the 4025 size for standard-canopy clearance.\n    The larger 4030EC Eclipse interferes with the canopy.\n  \u003c\/p\u003e\n  \u003cp\u003e\n    \u003cstrong\u003eAre all variants intended for the same application?\u003c\/strong\u003e\u003cbr\u003e\n    No. Egodrift identifies 1080Kv for helicopters, 550Kv for\n    F3A or helicopter applications, and 650Kv for F3A applications.\n    Match the winding and shaft to your drive system.\n  \u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"Egodrift","offers":[{"title":"550Kv","offer_id":42612197654606,"sku":"EGO-11964","price":299.0,"currency_code":"USD","in_stock":false},{"title":"650Kv","offer_id":42612197720142,"sku":"EGO-11965","price":299.0,"currency_code":"USD","in_stock":false},{"title":"1080Kv","offer_id":42612197752910,"sku":"EGO-11966","price":299.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0582\/8558\/8558\/files\/egodrift-4025ec-eclipse-packshot-min.jpg?v=1749851670","url":"https:\/\/newenglandrc.us\/products\/egodrift-tengu-4025ec-eclipse-motor","provider":"New England RC","version":"1.0","type":"link"}