{"product_id":"hobbywing-seaking-3660sl-v2-2600kv-brushless-rc-boat-motor","title":"Hobbywing SEAKING 3660SL V2 2600KV Brushless RC Boat Motor for 2-4S","description":"\u003cstyle\u003e\n.cnhl-esc-content {\n  line-height: 1.7;\n  color: #222;\n}\n\n.cnhl-esc-content h2 {\n  font-size:18px;\n  font-weight:700;\n  margin:24px 0 10px;\n  color:#000;\n  border-bottom:1px solid #eee;\n  padding-bottom:6px;\n}\n\n.cnhl-esc-content h3 {\n  font-size:15px;\n  font-weight:bold;\n  margin:14px 0 8px;\n  color:#000;\n}\n\n.cnhl-esc-table-wrap {\n  width:100%;\n  overflow-x:auto;\n  -webkit-overflow-scrolling:touch;\n  margin:14px 0 20px;\n}\n\n.cnhl-esc-table {\n  width:100%;\n  min-width:620px;\n  border-collapse:collapse;\n  font-size:14px;\n  line-height:1.5;\n}\n\n.cnhl-esc-table th,\n.cnhl-esc-table td {\n  padding:10px 12px;\n  border:1px solid #ddd;\n  text-align:left;\n  vertical-align:top;\n}\n\n.cnhl-esc-table th {\n  width:34%;\n  background:#E60073;\n  color:#fff;\n  font-weight:700;\n}\n\n.cnhl-esc-table td {\n  background:#f2f2f2;\n}\n\n.cnhl-fit-box {\n  background:#f7f7f7;\n  padding:14px 16px;\n  margin:16px 0;\n  border-left:4px solid #E60073;\n  font-size:14px;\n  line-height:1.65;\n}\n\n.cnhl-img {\n  margin:20px 0;\n  text-align:left;\n}\n\n.cnhl-img img {\n  width:auto;\n  height:auto;\n  max-width:100%;\n  display:block;\n}\n\n.cnhl-esc-link {\n  color:#E60073;\n  text-decoration:underline;\n}\n\u003c\/style\u003e\n\n\n  \n\n\n\u003cdiv style=\"font-family:Arial,Helvetica,sans-serif;color:#222;line-height:1.75;font-size:15px;\"\u003e\n\n  \u003cp\u003e\n    Upgrade your RC boat propulsion system with the\n    \u003cstrong\u003eHobbywing SEAKING 3660SL V2 2600KV Brushless RC Boat Motor\u003c\/strong\u003e.\n    This 4-pole, sensorless marine motor combines a water-cooling jacket,\n    precision CNC aluminum construction, and a smooth power delivery\n    design for high-performance electric RC boats.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    Designed for \u003cstrong\u003e2S–4S LiPo setups\u003c\/strong\u003e and RC boats up to\n    \u003cstrong\u003e80cm (31.5 inches)\u003c\/strong\u003e in length, the SEAKING 3660SL V2\n    pairs with the Hobbywing SEAKING 90A V4 ESC to create a coordinated\n    brushless marine power system.\n  \u003c\/p\u003e\n\n  \u003cdiv style=\"background:#f8f8f8;border-left:4px solid #E60073;padding:16px 18px;margin:22px 0;border-radius:4px;\"\u003e\n    \u003ch2 style=\"font-size:20px;color:#111;margin:0 0 10px;\"\u003eQuick Fit Check\u003c\/h2\u003e\n    \u003cp style=\"margin:0 0 8px;\"\u003e\u003cstrong\u003eModel:\u003c\/strong\u003e SEAKING 3660SL 2600KV V2 (30419007)\u003c\/p\u003e\n    \u003cp style=\"margin:0 0 8px;\"\u003e\u003cstrong\u003eBattery:\u003c\/strong\u003e 2S–4S LiPo\u003c\/p\u003e\n    \u003cp style=\"margin:0 0 8px;\"\u003e\u003cstrong\u003eRecommended ESC:\u003c\/strong\u003e Hobbywing SEAKING 90A V4\u003c\/p\u003e\n    \u003cp style=\"margin:0 0 8px;\"\u003e\u003cstrong\u003eBoat Application:\u003c\/strong\u003e RC boats up to 80cm\u003c\/p\u003e\n    \u003cp style=\"margin:0 0 8px;\"\u003e\u003cstrong\u003eMotor Body:\u003c\/strong\u003e 60 × 36.5 × 36.5mm (L × W × H, excluding water-cooling jacket and shaft)\u003c\/p\u003e\n    \u003cp style=\"margin:0 0 8px;\"\u003e\u003cstrong\u003eOutput Shaft:\u003c\/strong\u003e 5mm diameter × 18mm length\u003c\/p\u003e\n    \u003cp style=\"margin:0;\"\u003e\u003cstrong\u003eMounting:\u003c\/strong\u003e Six M3 mounting holes, 6mm deep\u003c\/p\u003e\n  \u003c\/div\u003e\n  \n          \u003cdiv class=\"cnhl-img\"\u003e\n \u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0633\/0617\/0582\/files\/002_66255e6b-376b-44b6-9ea8-ab4cc3ac48a6.png\" alt=\"Hobbywing SEAKING 3660SL V2 2600KV brushless RC boat motor built for high-performance electric boat power\"\u003e\u003c\/p\u003e\n \u003c\/div\u003e\n\n  \u003ch2 style=\"font-size:22px;font-weight:bold;color:#111;margin:30px 0 12px;border-bottom:2px solid #E60073;padding-bottom:8px;\"\u003e\n    Hobbywing SEAKING 3660SL V2 2600KV Specifications\n  \u003c\/h2\u003e\n\n  \u003ctable style=\"width:100%;border-collapse:separate;border-spacing:0 8px!important;font-size:14px;\"\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd style=\"background:#E60073;color:#fff;padding:10px 12px;width:40%;font-weight:bold;\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"background:#f2f2f2;padding:10px 12px;\"\u003eHobbywing\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd style=\"background:#E60073;color:#fff;padding:10px 12px;font-weight:bold;\"\u003eProduct Series\u003c\/td\u003e\n\u003ctd style=\"background:#f2f2f2;padding:10px 12px;\"\u003eSEAKING SL V2\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd style=\"background:#E60073;color:#fff;padding:10px 12px;font-weight:bold;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"background:#f2f2f2;padding:10px 12px;\"\u003e3660SL 2600KV V2\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd style=\"background:#E60073;color:#fff;padding:10px 12px;font-weight:bold;\"\u003eProduct Number \/ SKU\u003c\/td\u003e\n\u003ctd style=\"background:#f2f2f2;padding:10px 12px;\"\u003e30419007\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd style=\"background:#E60073;color:#fff;padding:10px 12px;font-weight:bold;\"\u003eMotor Type\u003c\/td\u003e\n\u003ctd style=\"background:#f2f2f2;padding:10px 12px;\"\u003eBrushless Inrunner\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd style=\"background:#E60073;color:#fff;padding:10px 12px;font-weight:bold;\"\u003eSensor Type\u003c\/td\u003e\n\u003ctd style=\"background:#f2f2f2;padding:10px 12px;\"\u003eSensorless\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd style=\"background:#E60073;color:#fff;padding:10px 12px;font-weight:bold;\"\u003eMotor Poles\u003c\/td\u003e\n\u003ctd style=\"background:#f2f2f2;padding:10px 12px;\"\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd style=\"background:#E60073;color:#fff;padding:10px 12px;font-weight:bold;\"\u003eKV Rating\u003c\/td\u003e\n\u003ctd style=\"background:#f2f2f2;padding:10px 12px;\"\u003e2600KV\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd style=\"background:#E60073;color:#fff;padding:10px 12px;font-weight:bold;\"\u003eLiPo Compatibility\u003c\/td\u003e\n\u003ctd style=\"background:#f2f2f2;padding:10px 12px;\"\u003e2S–4S (7.4V–14.8V nominal)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd style=\"background:#E60073;color:#fff;padding:10px 12px;font-weight:bold;\"\u003eNo-Load Current\u003c\/td\u003e\n\u003ctd style=\"background:#f2f2f2;padding:10px 12px;\"\u003e8.4A\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd style=\"background:#E60073;color:#fff;padding:10px 12px;font-weight:bold;\"\u003eMotor Dimensions (L × W × H)\u003c\/td\u003e\n\u003ctd style=\"background:#f2f2f2;padding:10px 12px;\"\u003e60 × 36.5 × 36.5mm (without water-cooling jacket)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd style=\"background:#E60073;color:#fff;padding:10px 12px;font-weight:bold;\"\u003eShaft Diameter\u003c\/td\u003e\n\u003ctd style=\"background:#f2f2f2;padding:10px 12px;\"\u003e5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd style=\"background:#E60073;color:#fff;padding:10px 12px;font-weight:bold;\"\u003eShaft Length\u003c\/td\u003e\n\u003ctd style=\"background:#f2f2f2;padding:10px 12px;\"\u003e18mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd style=\"background:#E60073;color:#fff;padding:10px 12px;font-weight:bold;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"background:#f2f2f2;padding:10px 12px;\"\u003e284g\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd style=\"background:#E60073;color:#fff;padding:10px 12px;font-weight:bold;\"\u003eFront Bearing\u003c\/td\u003e\n\u003ctd style=\"background:#f2f2f2;padding:10px 12px;\"\u003eD16 × D5 × T5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd style=\"background:#E60073;color:#fff;padding:10px 12px;font-weight:bold;\"\u003eRear Bearing\u003c\/td\u003e\n\u003ctd style=\"background:#f2f2f2;padding:10px 12px;\"\u003eD11 × D5 × T5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd style=\"background:#E60073;color:#fff;padding:10px 12px;font-weight:bold;\"\u003eMotor Mounting\u003c\/td\u003e\n\u003ctd style=\"background:#f2f2f2;padding:10px 12px;\"\u003e6 × M3 threaded holes, 6mm depth\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd style=\"background:#E60073;color:#fff;padding:10px 12px;font-weight:bold;\"\u003eCooling System\u003c\/td\u003e\n\u003ctd style=\"background:#f2f2f2;padding:10px 12px;\"\u003eWater-cooling jacket with external cooling fins\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd style=\"background:#E60073;color:#fff;padding:10px 12px;font-weight:bold;\"\u003eRecommended ESC\u003c\/td\u003e\n\u003ctd style=\"background:#f2f2f2;padding:10px 12px;\"\u003eHobbywing SEAKING 90A V4\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd style=\"background:#E60073;color:#fff;padding:10px 12px;font-weight:bold;\"\u003eRecommended Boat Size\u003c\/td\u003e\n\u003ctd style=\"background:#f2f2f2;padding:10px 12px;\"\u003eUp to 80cm (31.5 inches)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003cp style=\"font-size:13px;color:#666;margin-top:6px;\"\u003e\n    Note: Motor body dimensions exclude the water-cooling jacket, hose fittings,\n    and protruding shaft. Check the official dimensional drawing for complete\n    installation clearance. The 8.4A specification is no-load current, not\n    maximum operating current.\n  \u003c\/p\u003e\n\n  \n  \u003ch2 style=\"font-size:22px;font-weight:bold;color:#111;margin:32px 0 12px;border-bottom:2px solid #E60073;padding-bottom:8px;\"\u003e\n    Built for High-Performance RC Boat Power Systems\n  \u003c\/h2\u003e\n\n  \u003cp\u003e\n    A marine motor must handle more than a quick burst of acceleration.\n    Propeller load changes as the boat accelerates, turns, and encounters\n    different water conditions. Sustained running also places continuous\n    demands on the motor and its cooling system.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    The SEAKING 3660SL V2 uses a 4-pole brushless inrunner design with\n    a 2600KV rating, giving RC boat builders a practical foundation\n    for 2S, 3S, and 4S propulsion configurations.\n    Its sensorless design and construction support responsive acceleration\n    and stable operation when matched with the correct ESC and propeller.\n  \u003c\/p\u003e\n\n  \u003ch3 style=\"font-size:18px;color:#111;margin:20px 0 8px;\"\u003e\n    Smooth Startup and Responsive Throttle Control\n  \u003c\/h3\u003e\n  \u003cp\u003e\n    The motor is developed for smooth startup and strong power delivery.\n    When combined with a compatible marine ESC, it provides a flexible\n    platform for tuning throttle response and acceleration to match\n    the boat's intended use.\n  \u003c\/p\u003e\n\n  \u003ch3 style=\"font-size:18px;color:#111;margin:20px 0 8px;\"\u003e\n    Designed for Boats Up to 80cm\n  \u003c\/h3\u003e\n  \u003cp\u003e\n    Hobbywing specifies the 3660SL V2 2600KV for RC boats measuring up\n    to 80cm in length. It is suitable for consideration in performance\n    speedboat projects, brushless marine builds, and compatible\n    replacement motor installations.\n  \u003c\/p\u003e\n  \u003cp\u003e\n    Hull length is an application guideline rather than a universal\n    guarantee of compatibility. Propeller diameter, pitch, drivetrain\n    resistance, hull weight, and battery voltage must also be considered.\n  \u003c\/p\u003e\n\n  \u003ch2 style=\"font-size:22px;font-weight:bold;color:#111;margin:32px 0 12px;border-bottom:2px solid #E60073;padding-bottom:8px;\"\u003e\n    Advanced Water-Cooling Design\n  \u003c\/h2\u003e\n\n  \u003cp\u003e\n    Consistent cooling is essential in a high-output brushless RC boat motor.\n    The SEAKING 3660SL V2 incorporates a water-cooling jacket designed\n    to transfer heat away from the motor during operation.\n  \u003c\/p\u003e\n\n          \u003cdiv class=\"cnhl-img\"\u003e\n \u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0633\/0617\/0582\/files\/003_1f168e4a-fa2a-480c-872e-0884ba1fd984.png\" alt=\"Water-cooled jacket design of the Hobbywing SEAKING 3660SL V2 2600KV brushless marine motor\"\u003e\u003c\/p\u003e\n \u003c\/div\u003e\n  \n  \u003cul style=\"padding-left:22px;margin:12px 0;\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eInternal water circulation:\u003c\/strong\u003e Directs cooling water through the surrounding jacket to help remove motor heat.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCNC-machined cooling fins:\u003c\/strong\u003e Increase the external surface area available for heat transfer.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFan blade-shaped end-cap openings:\u003c\/strong\u003e Add a distinctive ventilation design to the motor assembly.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eExtended-run cooling support:\u003c\/strong\u003e Helps manage operating temperature when the boat's water-cooling circuit is functioning correctly.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n            \u003cdiv class=\"cnhl-img\"\u003e\n \u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0633\/0617\/0582\/files\/005_d212f534-cef4-4c13-b863-2b7c808db15b.png\" alt=\"Fan blade vents and polished cooling fins on the Hobbywing SEAKING 3660SL V2 brushless RC boat motor\"\u003e\u003c\/p\u003e\n \u003c\/div\u003e\n  \n  \u003cdiv style=\"background:#fff5f9;border:1px solid #f3b4d0;border-radius:5px;padding:14px 16px;margin:18px 0;\"\u003e\n    \u003cp style=\"margin:0;\"\u003e\n      \u003cstrong\u003eImportant:\u003c\/strong\u003e Connect the motor's water-cooling jacket\n      to the boat's water-cooling system before operation. Secure all tubing\n      connections and verify that cooling water can circulate properly.\n      A cooling jacket does not eliminate the need to monitor motor temperature.\n    \u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003ch2 style=\"font-size:22px;font-weight:bold;color:#111;margin:32px 0 12px;border-bottom:2px solid #E60073;padding-bottom:8px;\"\u003e\n    Premium Construction for Marine Use\n  \u003c\/h2\u003e\n\n  \u003cp\u003e\n    The SEAKING V2 series combines precision machining and selected\n    internal materials to improve mechanical durability and support\n    reliable power delivery.\n  \u003c\/p\u003e\n\n  \u003cul style=\"padding-left:22px;margin:12px 0;\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCNC aluminum housing:\u003c\/strong\u003e Provides a rigid structure and accurate component alignment.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHigh-temperature copper windings:\u003c\/strong\u003e Designed to tolerate the thermal demands of brushless motor operation.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eUltra-thin silicon steel laminations:\u003c\/strong\u003e Support efficient magnetic operation within the stator.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eKevlar-wrapped rotor:\u003c\/strong\u003e Reinforces the rotating assembly for demanding operation.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePrecision output shaft and quality bearings:\u003c\/strong\u003e Support consistent rotation and mechanical stability.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eServiceable construction:\u003c\/strong\u003e Allows inspection, cleaning, and maintenance following the manufacturer's instructions.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n              \u003cdiv class=\"cnhl-img\"\u003e\n \u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0633\/0617\/0582\/files\/006_8dbd1b08-8c4e-458e-a149-59e8efad47ec.png\" alt=\"Premium materials used in the Hobbywing SEAKING 3660SL V2 brushless RC boat motor\"\u003e\u003c\/p\u003e \u003c\/div\u003e\n  \n  \u003cp\u003e\n    These construction details make the 3660SL V2 a strong candidate\n    for builders who prioritize cooling design, dimensional accuracy,\n    and long-term serviceability when selecting a marine brushless motor.\n  \u003c\/p\u003e\n\n  \u003ch2 style=\"font-size:22px;font-weight:bold;color:#111;margin:32px 0 12px;border-bottom:2px solid #E60073;padding-bottom:8px;\"\u003e\n    Recommended ESC: Hobbywing SEAKING 90A V4\n  \u003c\/h2\u003e\n\n  \u003cp\u003e\n    Hobbywing identifies the \u003cstrong\u003eSEAKING 90A V4 ESC\u003c\/strong\u003e as\n    the recommended speed controller for the 3660SL V2 2600KV motor.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    Matching a marine motor with an appropriate ESC is important for\n    throttle control, battery voltage compatibility, motor direction,\n    and protection settings. The SEAKING V4 platform is designed\n    to work with Hobbywing's corresponding marine brushless motors.\n  \u003c\/p\u003e\n   \n                              \u003cdiv class=\"cnhl-img\"\u003e\n \u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0633\/0617\/0582\/files\/004_d0c83987-622f-4581-b3dd-366846ed0508.png\" alt=\"Hobbywing SEAKING 3660SL V2 2600KV motor matched with the SeaKing 90A V4 ESC\"\u003e\u003c\/p\u003e \u003c\/div\u003e\n\n  \u003cp\u003e\n    This motor supports 2S–4S LiPo batteries. Before selecting a\n    propeller or increasing battery voltage, make sure the complete\n    propulsion system operates within the ESC, battery, motor,\n    and drivetrain limits.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    Explore compatible marine speed controllers in the\n    \u003ca href=\"https:\/\/chinahobbyline.com\/collections\/hobbywing-seaking-escs\" style=\"color:#E60073;text-decoration:underline;font-weight:bold;\"\u003eHobbywing SEAKING ESCs collection\u003c\/a\u003e.\n  \u003c\/p\u003e\n\n  \u003ch2 style=\"font-size:22px;font-weight:bold;color:#111;margin:32px 0 12px;border-bottom:2px solid #E60073;padding-bottom:8px;\"\u003e\n    2600KV vs 3400KV: Which SEAKING 3660SL V2?\n  \u003c\/h2\u003e\n\n  \u003cp\u003e\n    The SEAKING 3660SL V2 family includes two KV configurations.\n    Although both use the same general 3660 motor format,\n    their official supported LiPo ranges differ.\n  \u003c\/p\u003e\n\n  \u003cdiv style=\"overflow-x:auto;margin:16px 0;\"\u003e\n    \u003ctable style=\"width:100%;border-collapse:collapse;font-size:14px;min-width:420px;\"\u003e\n      \u003cthead\u003e\n        \u003ctr style=\"background:#E60073;color:white;\"\u003e\n          \u003cth style=\"padding:11px;text-align:left;\"\u003eSpecification\u003c\/th\u003e\n          \u003cth style=\"padding:11px;text-align:left;\"\u003e2600KV V2\u003c\/th\u003e\n          \u003cth style=\"padding:11px;text-align:left;\"\u003e3400KV V2\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:10px;\"\u003eMotor KV\u003c\/td\u003e\n\u003ctd style=\"padding:10px;\"\u003e2600KV\u003c\/td\u003e\n\u003ctd style=\"padding:10px;\"\u003e3400KV\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd style=\"padding:10px;\"\u003eLiPo Range\u003c\/td\u003e\n\u003ctd style=\"padding:10px;\"\u003e2S–4S\u003c\/td\u003e\n\u003ctd style=\"padding:10px;\"\u003e2S–3S\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:10px;\"\u003eNo-load Current\u003c\/td\u003e\n\u003ctd style=\"padding:10px;\"\u003e8.4A\u003c\/td\u003e\n\u003ctd style=\"padding:10px;\"\u003e7.6A\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd style=\"padding:10px;\"\u003eMotor Weight\u003c\/td\u003e\n\u003ctd style=\"padding:10px;\"\u003e284g\u003c\/td\u003e\n\u003ctd style=\"padding:10px;\"\u003e290g\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:10px;\"\u003eRecommended ESC\u003c\/td\u003e\n\u003ctd style=\"padding:10px;\"\u003eSEAKING 90A V4\u003c\/td\u003e\n\u003ctd style=\"padding:10px;\"\u003eSEAKING 90A V4\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003cp\u003e\n    \u003cstrong\u003eChoose 2600KV\u003c\/strong\u003e if your build requires the\n    manufacturer's supported 2S–4S voltage range.\n    The \u003cstrong\u003e3400KV\u003c\/strong\u003e version has a higher\n    theoretical no-load RPM per volt but is officially rated for\n    2S–3S LiPo operation.\n  \u003c\/p\u003e\n\n             \u003cdiv class=\"cnhl-img\"\u003e\n \u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0633\/0617\/0582\/files\/001_1057909c-ad6f-4657-82e5-4aeaac3d5d72.png\" alt=\"Hobbywing SEAKING SL V2 brushless marine motor lineup including 3674 3660 2850 and 2040 sizes\"\u003e\u003c\/p\u003e\n                                \u003c\/div\u003e\n                                \n  \u003cp\u003e\n    A higher KV number does not automatically mean a faster boat.\n    Actual performance depends on propeller load, hull design,\n    drivetrain efficiency, battery voltage, and available current.\n  \u003c\/p\u003e\n\n  \u003ch2 style=\"font-size:22px;font-weight:bold;color:#111;margin:32px 0 12px;border-bottom:2px solid #E60073;padding-bottom:8px;\"\u003e\n    Installation, Motor Mounting \u0026amp; Wiring\n  \u003c\/h2\u003e\n\n  \u003ch3 style=\"font-size:18px;color:#111;margin:20px 0 8px;\"\u003e\n    1. Confirm Motor Mounting Dimensions\n  \u003c\/h3\u003e\n\n  \u003cp\u003e\n    The 3660SL V2 uses six M3 threaded mounting holes with\n    a specified hole depth of 6mm. Check the motor mount,\n    screw diameter, screw engagement, and surrounding clearance\n    before tightening the motor.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    The motor body measures 36.5mm in diameter and 60mm in length,\n    excluding the water-cooling jacket. The shaft measures\n    5mm in diameter with an 18mm specified length.\n    Verify coupling compatibility and alignment before installation.\n  \u003c\/p\u003e\n\n  \u003ch3 style=\"font-size:18px;color:#111;margin:20px 0 8px;\"\u003e\n    2. Connect the Motor to the ESC\n  \u003c\/h3\u003e\n\n  \u003cp\u003e\n    Connect the motor's three phase wires to the corresponding\n    brushless ESC outputs. The manufacturer does not require\n    a specific phase-wire sequence.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    If the motor rotates in the wrong direction, swap any two\n    motor phase wires or use the ESC's supported motor rotation\n    setting. Always disconnect the propulsion battery before\n    changing the wiring.\n  \u003c\/p\u003e\n\n  \u003ch3 style=\"font-size:18px;color:#111;margin:20px 0 8px;\"\u003e\n    3. Connect the Water-Cooling System\n  \u003c\/h3\u003e\n\n  \u003cp\u003e\n    Attach the boat's cooling hoses to the motor jacket fittings.\n    Follow the water-cooling circuit arrangement specified\n    for your boat and secure the connections against loosening.\n  \u003c\/p\u003e\n\n  \u003ch3 style=\"font-size:18px;color:#111;margin:20px 0 8px;\"\u003e\n    4. Inspect Before Operation\n  \u003c\/h3\u003e\n\n  \u003cp\u003e\n    Before powering on the ESC, check the motor mounting,\n    propeller shaft alignment, phase connections, battery wiring,\n    and cooling hoses. Keep hands and loose objects away\n    from the rotating drivetrain.\n  \u003c\/p\u003e\n\n  \u003ch2 style=\"font-size:22px;font-weight:bold;color:#111;margin:32px 0 12px;border-bottom:2px solid #E60073;padding-bottom:8px;\"\u003e\n    Maintenance \u0026amp; Operating Precautions\n  \u003c\/h2\u003e\n\n  \u003cul style=\"padding-left:22px;margin:12px 0;\"\u003e\n    \u003cli\u003eInspect the motor bearings regularly for unusual noise, resistance, or wear.\u003c\/li\u003e\n    \u003cli\u003eCheck cooling hoses and fittings for leaks, kinks, or loose connections.\u003c\/li\u003e\n    \u003cli\u003eRemove dirt and contamination as recommended in the manufacturer manual.\u003c\/li\u003e\n    \u003cli\u003eVerify that the propeller and shaft coupling run without excessive binding or vibration.\u003c\/li\u003e\n    \u003cli\u003eMonitor operating temperature, especially after changing propeller size or battery voltage.\u003c\/li\u003e\n    \u003cli\u003eStop operation if motor temperature exceeds 100°C (212°F), as specified by Hobbywing.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003cp\u003e\n    The modular motor construction supports periodic inspection\n    and maintenance. For disassembly, bearing inspection, and\n    reassembly, follow the SEAKING V2 user manual.\n  \u003c\/p\u003e\n\n  \u003ch2 style=\"font-size:22px;font-weight:bold;color:#111;margin:32px 0 12px;border-bottom:2px solid #E60073;padding-bottom:8px;\"\u003e\n    Hobbywing SEAKING 3660SL V2 User Manual (PDF)\n  \u003c\/h2\u003e\n\n  \u003cp\u003e\n    For complete installation instructions, motor dimensional drawings,\n    water-cooling connections, wiring guidance, and service information,\n    download the official Hobbywing SEAKING V2 manual.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0633\/0617\/0582\/files\/Hobbywing_Seaking_Motor_V2_Manual.pdf\" target=\"_blank\" rel=\"noopener noreferrer\" style=\"display:inline-block;background:#E60073;color:#fff;text-decoration:none;padding:12px 18px;border-radius:5px;font-weight:bold;\"\u003e\n      Download Official SEAKING V2 Motor Manual (PDF)\n    \u003c\/a\u003e\n  \u003c\/p\u003e\n\n  \u003cp style=\"font-size:13px;color:#666;\"\u003e\n    The official document covers the SEAKING 2040SL, 2850SL,\n    3660SL, 3674SL, 4082SL, 4685SL, and 54113SL V2 motor families.\n    Use the specifications and dimensional drawing for the\n    3660SL V2 when installing this product.\n  \u003c\/p\u003e\n\n  \u003ch2 style=\"font-size:22px;font-weight:bold;color:#111;margin:32px 0 12px;border-bottom:2px solid #E60073;padding-bottom:8px;\"\u003e\n    Frequently Asked Questions\n  \u003c\/h2\u003e\n\n  \u003ch3 style=\"font-size:17px;color:#111;margin:20px 0 7px;\"\u003e\n    Is the Hobbywing SEAKING 3660SL V2 2600KV motor brushless?\n  \u003c\/h3\u003e\n  \u003cp\u003e\n    Yes. It is a 4-pole, sensorless brushless inrunner motor designed\n    for electric RC boat propulsion. It requires a compatible\n    brushless ESC.\n  \u003c\/p\u003e\n\n  \u003ch3 style=\"font-size:17px;color:#111;margin:20px 0 7px;\"\u003e\n    Can the SEAKING 3660SL 2600KV V2 run on 4S LiPo?\n  \u003c\/h3\u003e\n  \u003cp\u003e\n    Yes. Hobbywing specifies a 2S–4S LiPo operating range\n    for the 2600KV version. A 4S LiPo battery has a nominal\n    voltage of 14.8V. Use a compatible ESC and choose the\n    propeller load carefully to avoid overloading the motor.\n  \u003c\/p\u003e\n\n  \u003ch3 style=\"font-size:17px;color:#111;margin:20px 0 7px;\"\u003e\n    Which ESC is recommended for the 3660SL V2 2600KV?\n  \u003c\/h3\u003e\n  \u003cp\u003e\n    The officially recommended controller is the\n    \u003cstrong\u003eHobbywing SEAKING 90A V4 ESC\u003c\/strong\u003e.\n    Verify the complete electrical setup, including battery\n    voltage, connectors, and cooling requirements.\n  \u003c\/p\u003e\n\n  \u003ch3 style=\"font-size:17px;color:#111;margin:20px 0 7px;\"\u003e\n    Does the motor need water cooling?\n  \u003c\/h3\u003e\n  \u003cp\u003e\n    Yes. The motor uses a water-cooling jacket and is intended\n    for installation in a properly functioning marine\n    water-cooling system. Secure the tubing and confirm\n    water circulation before running the boat.\n  \u003c\/p\u003e\n\n  \u003ch3 style=\"font-size:17px;color:#111;margin:20px 0 7px;\"\u003e\n    What size shaft does the 3660SL V2 use?\n  \u003c\/h3\u003e\n  \u003cp\u003e\n    The output shaft is 5mm in diameter with an\n    18mm specified length. Match the motor coupling\n    to the shaft dimensions and verify drivetrain alignment.\n  \u003c\/p\u003e\n\n  \u003ch3 style=\"font-size:17px;color:#111;margin:20px 0 7px;\"\u003e\n    What is the difference between the 2600KV and 3400KV models?\n  \u003c\/h3\u003e\n  \u003cp\u003e\n    The 2600KV motor supports 2S–4S LiPo batteries, while\n    the 3400KV version supports 2S–3S. Both belong to\n    the 3660SL V2 family but have different KV ratings\n    and no-load current specifications.\n  \u003c\/p\u003e\n\n  \u003ch3 style=\"font-size:17px;color:#111;margin:20px 0 7px;\"\u003e\n    Can I reverse the motor rotation?\n  \u003c\/h3\u003e\n  \u003cp\u003e\n    Yes. You can reverse the rotation direction by swapping\n    any two motor phase wires. Alternatively, use the\n    motor rotation setting if supported by your ESC.\n    Disconnect the battery before changing connections.\n  \u003c\/p\u003e\n\n  \u003ch3 style=\"font-size:17px;color:#111;margin:20px 0 7px;\"\u003e\n    What size RC boat can use this motor?\n  \u003c\/h3\u003e\n  \u003cp\u003e\n    Hobbywing recommends this motor for boats up to 80cm\n    (approximately 31.5 inches). Actual compatibility depends\n    on hull weight, motor mounting, propeller selection,\n    drivetrain configuration, and cooling capacity.\n  \u003c\/p\u003e\n\n  \u003ch2 style=\"font-size:22px;font-weight:bold;color:#111;margin:32px 0 12px;border-bottom:2px solid #E60073;padding-bottom:8px;\"\u003e\n    Complete Your RC Boat Power Setup\n  \u003c\/h2\u003e\n\n  \u003cp\u003e\n    A well-matched RC boat power system brings together\n    the motor, ESC, battery, propeller, and cooling circuit.\n    Explore related components for your next marine\n    brushless build:\n  \u003c\/p\u003e\n\n  \u003cul style=\"padding-left:22px;margin:12px 0;\"\u003e\n    \u003cli\u003e\n\u003ca href=\"https:\/\/chinahobbyline.com\/collections\/hobbywing-seaking-escs\" style=\"color:#E60073;text-decoration:underline;\"\u003eHobbywing SEAKING ESCs\u003c\/a\u003e – Marine speed controllers for Hobbywing brushless power systems.\u003c\/li\u003e\n    \u003cli\u003e\n\u003ca href=\"https:\/\/chinahobbyline.com\/collections\/rc-boat-escs\" style=\"color:#E60073;text-decoration:underline;\"\u003eRC Boat ESCs\u003c\/a\u003e – Compare electronic speed controllers for electric boats.\u003c\/li\u003e\n    \u003cli\u003e\n\u003ca href=\"https:\/\/chinahobbyline.com\/collections\/rc-boat-battery\" style=\"color:#E60073;text-decoration:underline;\"\u003eRC Boat LiPo Batteries\u003c\/a\u003e – Find battery options for your boat's electrical and physical requirements.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n\u003c\/div\u003e\n","brand":"ChinaHobbyLine","offers":[{"title":"Global","offer_id":67967721504982,"sku":"30419007 GL","price":57.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0633\/0617\/0582\/files\/SEAKING-3660SL-V2-2_2048x_6a69d361-b7cf-4643-931c-56b22885c75f.webp?v=1794549336","url":"https:\/\/chinahobbyline.com\/id\/products\/hobbywing-seaking-3660sl-v2-2600kv-brushless-rc-boat-motor","provider":"ChinaHobbyLine","version":"1.0","type":"link"}