{"product_id":"eco-ii-4720-brushless-motor","title":"ECO II 4720 Brushless Motor","description":"\u003cdiv class=\"emx4720\"\u003e\n  \u003cstyle\u003e\n    .emx4720{--red:#e31b23;--black:#070809;--line:#292d33;--text:#f3f4f6;background:var(--black);color:var(--text);border:1px solid #1c1f24;font-family:Arial,Helvetica,sans-serif;line-height:1.55;overflow:hidden;isolation:isolate}\n    .emx4720 *{box-sizing:border-box}.emx4720 img{display:block;width:100%;height:auto}.emx4720 p{margin-top:0;color:#c9cdd4}.emx4720 h2,.emx4720 h3,.emx4720 h4{margin-top:0;color:#fff;font-weight:800;letter-spacing:.02em;line-height:1.12}.emx4720 h2{font-size:clamp(36px,6vw,72px);margin-bottom:18px}.emx4720 h3{font-size:clamp(24px,3vw,36px);margin-bottom:14px}.emx4720 h4{font-size:18px;margin-bottom:7px}\n    .emx4720 .wrap{width:min(1160px,100%);margin:auto;padding:0 26px}.emx4720 .section{padding:68px 0;border-top:1px solid var(--line)}.emx4720 .kicker{display:flex;align-items:center;gap:10px;margin-bottom:17px;color:#ff4a50;font-size:12px;font-weight:800;letter-spacing:.18em;text-transform:uppercase}.emx4720 .kicker:before{content:\"\";width:34px;height:2px;background:var(--red);box-shadow:10px 0 0 rgba(227,27,35,.24)}.emx4720 .lede{max-width:850px;font-size:17px;line-height:1.7;color:#d5d8dd}\n    .emx4720 .hero{position:relative;padding:76px 0 58px;background:linear-gradient(120deg,rgba(227,27,35,.13),transparent 34%),linear-gradient(180deg,#0b0d10,#070809)}.emx4720 .hero:after{content:\"4720\";position:absolute;right:-18px;bottom:-55px;color:transparent;-webkit-text-stroke:1px rgba(255,255,255,.055);font-size:clamp(130px,24vw,330px);font-weight:900;line-height:1;pointer-events:none}.emx4720 .hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1.4fr) minmax(270px,.6fr);gap:40px;align-items:end}.emx4720 .series{display:inline-flex;padding:7px 11px;border:1px solid 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strong{display:block;color:#fff;font-size:28px;line-height:1}.emx4720 .stat span{display:block;color:#9ba1aa;font-size:12px;margin-top:7px}.emx4720 .media{margin:30px 0 0;border:1px solid #25292f;background:#050607;box-shadow:0 22px 55px rgba(0,0,0,.36)}\n    .emx4720 .grid2{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:start}.emx4720 .kv-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:28px}.emx4720 .kv{padding:22px 18px;border-top:3px solid var(--red);background:#0d0f12}.emx4720 .kv b{display:block;font-size:28px;color:#fff}.emx4720 .kv span{display:block;color:#b7bcc4;font-size:13px;margin-top:7px}.emx4720 .scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}.emx4720 table{width:100%;border-collapse:collapse;background:#0b0d0f}.emx4720 th,.emx4720 td{padding:13px 14px;border:1px solid var(--line);text-align:left;vertical-align:top}.emx4720 th{background:#15181c;color:#fff;font-size:12px;letter-spacing:.08em;text-transform:uppercase}.emx4720 td{color:#cbd0d7;font-size:14px}.emx4720 tbody tr:nth-child(even) td{background:#0e1013}.emx4720 .accent{color:#ff4a50;font-weight:800}.emx4720 .caption{font-size:12px;color:#8f969f;margin:12px 0 0}.emx4720 .features{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:28px}.emx4720 .feature{padding:22px;border:1px solid var(--line);background:#0d0f12}.emx4720 .feature b{display:block;color:#fff;margin-bottom:6px}.emx4720 .feature span{color:#9fa5ae;font-size:13px}.emx4720 .box-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin:26px 0 0;padding:0;list-style:none}.emx4720 .box-list li{position:relative;padding:15px 15px 15px 42px;border:1px solid var(--line);background:#0d0f12;color:#e4e6ea}.emx4720 .box-list li:before{content:\"\";position:absolute;left:18px;top:23px;width:8px;height:8px;border-radius:50%;background:var(--red)}.emx4720 .foot{padding:25px 0;border-top:1px solid var(--line);background:#050607}.emx4720 .foot p{font-size:12px;color:#848b95;margin:0}\n    @media(max-width:820px){.emx4720 .hero-grid,.emx4720 .grid2{grid-template-columns:1fr}.emx4720 .stats{grid-template-columns:repeat(2,1fr)}.emx4720 .features{grid-template-columns:1fr}.emx4720 .section{padding:48px 0}}\n    @media(max-width:520px){.emx4720 .wrap{padding:0 16px}.emx4720 .hero{padding-top:50px}.emx4720 .stats,.emx4720 .kv-grid,.emx4720 .box-list{grid-template-columns:1fr}.emx4720 th,.emx4720 td{padding:10px;font-size:12px}}\n  \u003c\/style\u003e\n\n  \u003cheader class=\"hero\"\u003e\u003cdiv class=\"wrap\"\u003e\n    \u003cdiv class=\"hero-grid\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"series\"\u003eEMAX \/ ECO II SERIES\u003c\/div\u003e\n\u003ch2\u003eEMAX ECO II \u003cspan\u003e4720\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp class=\"lede\"\u003eA 324 g high-torque external-rotor platform for 15-inch aircraft, offered in 290KV and 380KV windings across 6S through 12S systems.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hero-side\"\u003e\n\u003cstrong\u003eTwo windings. Up to 10.39 kg tested thrust.\u003c\/strong\u003e\u003cspan\u003eChoose 290KV for the widest voltage range or 380KV for 6S–8S systems.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"stats\" aria-label=\"ECO II 4720 key specifications\"\u003e\n\u003cdiv class=\"stat\"\u003e\n\u003csmall\u003eFramework\u003c\/small\u003e\u003cstrong\u003e12N14P\u003c\/strong\u003e\u003cspan\u003eExternal-rotor architecture\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"stat\"\u003e\n\u003csmall\u003eMotor size\u003c\/small\u003e\u003cstrong\u003e55.1 × 71\u003c\/strong\u003e\u003cspan\u003eMillimeters\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"stat\"\u003e\n\u003csmall\u003eWeight\u003c\/small\u003e\u003cstrong\u003e324 g\u003c\/strong\u003e\u003cspan\u003eWithout silicone wire\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"stat\"\u003e\n\u003csmall\u003ePropeller\u003c\/small\u003e\u003cstrong\u003e15 in\u003c\/strong\u003e\u003cspan\u003eBoth KV variants\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cfigure class=\"media\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0371\/2814\/2907\/files\/exec-82b4b0d5-6636-4909-bb09-0f63e710bf8a.png?v=1787945198\" alt=\"EMAX ECO II 4720 brushless motor for 15-inch FPV aircraft with 290KV and 380KV options\" loading=\"eager\"\u003e\u003c\/figure\u003e\n  \u003c\/div\u003e\u003c\/header\u003e\n\n  \u003csection class=\"section\"\u003e\u003cdiv class=\"wrap\"\u003e\n\u003cdiv class=\"kicker\"\u003e01 \/ Choose Your KV\u003c\/div\u003e\n\u003ch3\u003eMatch the winding to the voltage.\u003c\/h3\u003e\n\u003cp class=\"lede\"\u003eBoth versions are specified for 15-inch propellers, with cell-count options spanning 6S through 12S.\u003c\/p\u003e\n\u003cdiv class=\"kv-grid\"\u003e\n\u003cdiv class=\"kv\"\u003e\n\u003cb\u003e290KV\u003c\/b\u003e\u003cspan\u003e6–12S · 15-inch propeller\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kv\"\u003e\n\u003cb\u003e380KV\u003c\/b\u003e\u003cspan\u003e6S–8S · 15-inch propeller\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cfigure class=\"media\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0371\/2814\/2907\/files\/exec-3684da3a-678b-441d-a12f-71c73d0df925.png?v=1787945219\" alt=\"EMAX ECO II 4720 KV guide showing cell count and maximum recorded thrust for 290KV and 380KV\" loading=\"lazy\"\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\n  \u003csection class=\"section\" style=\"background:#090b0d\"\u003e\u003cdiv class=\"wrap\"\u003e\n\u003cdiv class=\"kicker\"\u003e02 \/ Performance Envelope\u003c\/div\u003e\n\u003ch3\u003eMaximum recorded thrust by KV.\u003c\/h3\u003e\n\u003cdiv class=\"scroll\"\u003e\u003ctable aria-label=\"ECO II 4720 maximum recorded bench results\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eKV\u003c\/th\u003e\n\u003cth\u003eTest propeller\u003c\/th\u003e\n\u003cth\u003eVoltage\u003c\/th\u003e\n\u003cth\u003eCurrent\u003c\/th\u003e\n\u003cth\u003eThrust\u003c\/th\u003e\n\u003cth\u003ePower\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"accent\"\u003e290KV\u003c\/td\u003e\n\u003ctd\u003eHQ 15×7×3, 3-blade\u003c\/td\u003e\n\u003ctd\u003e48.0 V\u003c\/td\u003e\n\u003ctd\u003e76.5 A\u003c\/td\u003e\n\u003ctd\u003e10,387 g\u003c\/td\u003e\n\u003ctd\u003e3672.0 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"accent\"\u003e380KV\u003c\/td\u003e\n\u003ctd\u003eHQ 15×7×3, 3-blade\u003c\/td\u003e\n\u003ctd\u003e33.6 V\u003c\/td\u003e\n\u003ctd\u003e70.3 A\u003c\/td\u003e\n\u003ctd\u003e7,693 g\u003c\/td\u003e\n\u003ctd\u003e2362.08 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp class=\"caption\"\u003eMaximum-throttle bench results from the supplied EMAX load-test sheets. Results are configuration-dependent and are not guaranteed aircraft-level performance.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\n  \u003csection class=\"section\"\u003e\u003cdiv class=\"wrap\"\u003e\n\u003cdiv class=\"kicker\"\u003e03 \/ Motor Construction\u003c\/div\u003e\n\u003ch3\u003eExternal-rotor torque with a 12N14P magnetic circuit.\u003c\/h3\u003e\n\u003cp class=\"lede\"\u003eThe permanent-magnet bell rotates around the fixed copper-wound stator, supported by an 8 mm bearing shaft and precision bearings.\u003c\/p\u003e\n\u003cfigure class=\"media\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0371\/2814\/2907\/files\/exec-964353e3-8e71-4e1c-9a25-6dd09a82f92e.png?v=1787945228\" alt=\"Exploded EMAX ECO II 4720 external-rotor motor showing M6 shaft, 14-pole magnet ring, 12-slot copper-wound stator, precision bearing support and 30 by 30 millimeter four-hole base\" loading=\"lazy\"\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\n  \u003csection class=\"section\" style=\"background:#090b0d\"\u003e\u003cdiv class=\"wrap\"\u003e\n\u003cdiv class=\"kicker\"\u003e04 \/ Platform Details\u003c\/div\u003e\n\u003ch3\u003e4720 geometry and installation details.\u003c\/h3\u003e\n\u003cdiv class=\"grid2\"\u003e\n\u003cdiv class=\"scroll\"\u003e\u003ctable aria-label=\"ECO II 4720 mechanical specifications\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eFramework\u003c\/th\u003e\n\u003ctd\u003e12N14P\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOverall dimensions\u003c\/th\u003e\n\u003ctd\u003eØ55.1 × 71 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e324 g without silicone wire\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePropeller shaft\u003c\/th\u003e\n\u003ctd\u003eM6 clockwise thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBearing shaft\u003c\/th\u003e\n\u003ctd\u003e8 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMounting pattern\u003c\/th\u003e\n\u003ctd\u003e30 × 30 mm, four holes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLeads\u003c\/th\u003e\n\u003ctd\u003e360 mm, 13 AWG silicone wire\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"features\"\u003e\n\u003cdiv class=\"feature\"\u003e\n\u003cb\u003eSteel shaft\u003c\/b\u003e\u003cspan\u003eM6 CW propeller thread.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feature\"\u003e\n\u003cb\u003eAnodized finish\u003c\/b\u003e\u003cspan\u003ePolished gunmetal rotor bell.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feature\"\u003e\n\u003cb\u003eMulti-strand winding\u003c\/b\u003e\u003cspan\u003eThree-phase copper-wound stator.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cfigure class=\"media\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0371\/2814\/2907\/files\/exec-53c5f0ca-a192-4791-8e8c-50021107021d.png?v=1787945237\" alt=\"EMAX ECO II 4720 motor platform for 15-inch FPV aircraft with 290KV and 380KV options\" loading=\"lazy\"\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\n  \u003csection class=\"section\"\u003e\u003cdiv class=\"wrap\"\u003e\n\u003cdiv class=\"kicker\"\u003e05 \/ Electrical Specifications\u003c\/div\u003e\n\u003ch3\u003eKV-specific published limits.\u003c\/h3\u003e\n\u003cdiv class=\"scroll\"\u003e\u003ctable aria-label=\"ECO II 4720 electrical specifications by KV\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eKV\u003c\/th\u003e\n\u003cth\u003eCells\u003c\/th\u003e\n\u003cth\u003ePropeller\u003c\/th\u003e\n\u003cth\u003eIdle current at 10 V\u003c\/th\u003e\n\u003cth\u003eResistance\u003c\/th\u003e\n\u003cth\u003ePeak current\u003c\/th\u003e\n\u003cth\u003eMaximum power\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"accent\"\u003e290KV\u003c\/td\u003e\n\u003ctd\u003e6–12S\u003c\/td\u003e\n\u003ctd\u003e15 in\u003c\/td\u003e\n\u003ctd\u003e1.7 A\u003c\/td\u003e\n\u003ctd\u003e47 mΩ\u003c\/td\u003e\n\u003ctd\u003e77 A at 12S\u003c\/td\u003e\n\u003ctd\u003e3696 W at 12S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"accent\"\u003e380KV\u003c\/td\u003e\n\u003ctd\u003e6S–8S\u003c\/td\u003e\n\u003ctd\u003e15 in\u003c\/td\u003e\n\u003ctd\u003e2.4 A\u003c\/td\u003e\n\u003ctd\u003e32 mΩ\u003c\/td\u003e\n\u003ctd\u003e72 A\u003c\/td\u003e\n\u003ctd\u003e2420 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\n  \u003csection class=\"section\" style=\"background:#090b0d\"\u003e\u003cdiv class=\"wrap\"\u003e\n\u003cdiv class=\"kicker\"\u003e06 \/ In The Box\u003c\/div\u003e\n\u003ch3\u003eCore installation hardware included.\u003c\/h3\u003e\n\u003cfigure class=\"media\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0371\/2814\/2907\/files\/exec-339d6ab6-0717-40a2-9f80-761d0abf3978.png?v=1787945208\" alt=\"EMAX ECO II 4720 motor, four M4 by 14 millimeter screws, steel M6 nylock nut and propeller washer\" loading=\"lazy\"\u003e\u003c\/figure\u003e\u003cul class=\"box-list\"\u003e\n\u003cli\u003e1 × ECO II 4720 motor\u003c\/li\u003e\n\u003cli\u003e4 × M4×14 mounting screws\u003c\/li\u003e\n\u003cli\u003e1 × steel M6 nylock nut\u003c\/li\u003e\n\u003cli\u003e1 × propeller washer\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\n  \u003cfooter class=\"foot\"\u003e\u003cdiv class=\"wrap\"\u003e\u003cp\u003e\u003cb\u003eBench-test note:\u003c\/b\u003e Performance values are measured test data, not guaranteed aircraft-level performance. Current draw, thrust, efficiency, RPM and temperature vary with propeller, battery voltage and sag, ESC behavior, airflow, ambient conditions and test equipment. Select the motor winding, propeller, ESC, battery and cooling appropriate for the complete aircraft.\u003c\/p\u003e\u003c\/div\u003e\u003c\/footer\u003e\n\u003c\/div\u003e\n","brand":"Emax USA","offers":[{"title":"290KV","offer_id":49376430948491,"sku":"ECOII4720290","price":65.99,"currency_code":"USD","in_stock":true},{"title":"380KV","offer_id":49376430981259,"sku":"ECOII4720380","price":65.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0584\/2200\/1803\/files\/ECOII-4720-380KV_4.jpg?v=1789587548","url":"https:\/\/webleedfpv.com\/products\/eco-ii-4720-brushless-motor","provider":"weBLEEDfpv","version":"1.0","type":"link"}