{"product_id":"bj-craft-anthem-epi-2m-f3a-rc-airplane-arf-elliptical-wing-non-contra-and-contra","title":"BJ Craft Anthem EPI 2M F3A RC Airplane ARF – Elliptical Wing (Non-Contra and Contra)","description":"\u003cp\u003eThe BJ Craft Anthem EPI is a refined 2-meter F3A pattern aircraft featuring an elliptical wing design for smoother handling, improved lift, and precision flight performance. Designed for serious pattern pilots.\u003c\/p\u003e\n\u003ch2\u003eBJ Craft Anthem EPI 2M F3A RC Airplane\u003c\/h2\u003e\n\u003cp\u003eThe Anthem EPI is a precision-engineered 2-meter F3A pattern aircraft from BJCraft, designed for pilots who want smooth, predictable handling and consistent performance. This version features an elliptical wing design, offering a refined flying experience compared to traditional swept wing configurations.\u003c\/p\u003e\n\u003ch3\u003eElliptical Wing Design – Smooth \u0026amp; Predictable\u003c\/h3\u003e\n\u003cp\u003eUnlike swept wing F3A aircraft, the Anthem EPI uses an elliptical leading edge design that provides a more even lift distribution across the wing. This results in smoother flight characteristics, improved low-speed handling, and a more forgiving feel in precision maneuvers.\u003c\/p\u003e\n\u003ch3\u003eFlight Characteristics\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSmoother tracking with reduced corrections\u003c\/li\u003e\n\u003cli\u003eImproved lift and control at lower speeds\u003c\/li\u003e\n\u003cli\u003eMore forgiving handling for consistent performance\u003c\/li\u003e\n\u003cli\u003eClean, axial rolls and stable lines\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAirframe Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWingspan: 1900mm\u003c\/li\u003e\n\u003cli\u003eLength: 2000mm\u003c\/li\u003e\n\u003cli\u003eWing Area: 60.3 dm²\u003c\/li\u003e\n\u003cli\u003eStabilizer Area: 17 dm²\u003c\/li\u003e\n\u003cli\u003eWeight: 2000–2200g\u003c\/li\u003e\n\u003cli\u003eCG: 210mm from leading edge\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eRecommended Servos\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAileron: MKS HV737 (x2)\u003c\/li\u003e\n\u003cli\u003eElevator: MKS HV69 (x2)\u003c\/li\u003e\n\u003cli\u003eRudder: MKS HV747 (x1)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWho Is This Plane For?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePilots transitioning into F3A competition\u003c\/li\u003e\n\u003cli\u003ePattern pilots seeking smoother, more forgiving handling\u003c\/li\u003e\n\u003cli\u003ePilots who prefer precision over aggressive response\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eElliptical vs Swept Wing – What’s the Difference?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eElliptical Wing (EPI):\u003c\/strong\u003e smoother, more forgiving, better lift distribution\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSwept Wing:\u003c\/strong\u003e more locked-in, higher stability in wind, more aggressive feel\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy Choose the Anthem EPI?\u003c\/h3\u003e\n\u003cp\u003eThe Anthem EPI delivers a refined flying experience with improved smoothness and control, making it an excellent choice for pilots who want precision without the aggressive feel of a swept wing design.\u003c\/p\u003e\n\u003cdiv dir=\"ltr\" aria-busy=\"false\" aria-live=\"polite\" id=\"model-response-message-contentr_7ab7caa6d5702080\" class=\"markdown markdown-main-panel tutor-markdown-rendering force-compact-layout enable-updated-hr-color\"\u003e\n\u003cp data-path-to-node=\"0\"\u003eIn the world of F3A pattern competition and high-performance RC flight, the choice between \u003cb data-index-in-node=\"91\" data-path-to-node=\"0\"\u003eNon-Contra (Single Prop)\u003c\/b\u003e and \u003cb data-index-in-node=\"120\" data-path-to-node=\"0\"\u003eContra-Rotating\u003c\/b\u003e systems significantly changes how the airplane handles and how you manage motor alignment (thrust angles).\u003c\/p\u003e\n\u003chr data-path-to-node=\"1\"\u003e\n\u003ch2 data-path-to-node=\"2\"\u003e1. Non-Contra (Single Propeller)\u003c\/h2\u003e\n\u003cp data-path-to-node=\"3\"\u003eThis is the traditional setup using one motor and one propeller. Because the propeller spins in one direction, it creates several aerodynamic forces that try to pull the airplane off its flight path.\u003c\/p\u003e\n\u003cul data-path-to-node=\"4\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"4,0,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"4,0,0\"\u003eP-Factor:\u003c\/b\u003e At high angles of attack, the descending blade produces more thrust than the ascending blade, pulling the plane to the left.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"4,1,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"4,1,0\"\u003eSlipstream Effect:\u003c\/b\u003e The \"corkscrew\" air from the prop hits the left side of the vertical tail, pushing the tail right and the nose left.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"4,2,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"4,2,0\"\u003eTorque:\u003c\/b\u003e The motor spinning the prop one way tries to roll the entire airframe the opposite way.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-path-to-node=\"5\"\u003eThe Role of Right Thrust\u003c\/h3\u003e\n\u003cp data-path-to-node=\"6\"\u003eTo counter these \"left-pulling\" forces, pilots build \u003cb data-index-in-node=\"53\" data-path-to-node=\"6\"\u003eRight Thrust\u003c\/b\u003e into the motor mount.\u003c\/p\u003e\n\u003cul data-path-to-node=\"7\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,0,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"7,0,0\"\u003eThe Angle:\u003c\/b\u003e Usually between \u003cb data-index-in-node=\"27\" data-path-to-node=\"7,0,0\"\u003e2.0° and 3.5°\u003c\/b\u003e of right thrust is required.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,1,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"7,1,0\"\u003eThe Goal:\u003c\/b\u003e You want the airplane to climb perfectly straight at full throttle without you having to hold right rudder manually.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-path-to-node=\"8\"\u003e\n\u003ch2 data-path-to-node=\"9\"\u003e2. Contra-Rotating Systems\u003c\/h2\u003e\n\u003cp data-path-to-node=\"10\"\u003eA Contra system (like those often used on the \u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003eBJCraft Anthem EPI\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e) uses two propellers spinning in opposite directions on the same axis.\u003c\/p\u003e\n\u003cul data-path-to-node=\"11\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,0,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"11,0,0\"\u003eNeutralized Torque:\u003c\/b\u003e Since the props spin in opposite directions, the rotational forces cancel each other out. There is virtually no torque-roll.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,1,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"11,1,0\"\u003eStraight Slipstream:\u003c\/b\u003e The second prop \"straightens\" the air coming off the first one. This results in a symmetrical airflow over the fuselage and tail.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,2,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"11,2,0\"\u003eBraking Effect:\u003c\/b\u003e Contra systems provide massive aerodynamic braking during downlines, allowing for very constant speed throughout a flight sequence.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-path-to-node=\"12\"\u003eRight Thrust in Contra Systems\u003c\/h3\u003e\n\u003cp data-path-to-node=\"13\"\u003eUnlike single prop setups, \u003cb data-index-in-node=\"27\" data-path-to-node=\"13\"\u003eContra systems typically require 0° (Neutral) Right Thrust.\u003c\/b\u003e * Because the aerodynamic forces are balanced, the plane doesn't naturally pull to the left.\u003c\/p\u003e\n\u003cul data-path-to-node=\"14\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"14,0,0\"\u003eBuilding in right thrust on a Contra system would actually cause the plane to pull to the right under power.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-path-to-node=\"15\"\u003e\n\u003ch2 data-path-to-node=\"16\"\u003eComparison Summary\u003c\/h2\u003e\n\u003ctable data-path-to-node=\"17\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eNon-Contra (Single Prop)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eContra-Rotating\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"17,1,0,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"17,1,0,0\"\u003eRight Thrust\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"17,1,1,0\"\u003eRequired (\u003cb data-index-in-node=\"10\" data-path-to-node=\"17,1,1,0\"\u003e2.5° – 3.0°\u003c\/b\u003e typically)\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"17,1,2,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"17,1,2,0\"\u003e0° (Neutral)\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"17,2,0,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"17,2,0,0\"\u003eTorque Effect\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"17,2,1,0\"\u003eNoticeable; requires pilot compensation\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"17,2,2,0\"\u003eAlmost non-existent\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"17,3,0,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"17,3,0,0\"\u003eDownline Braking\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"17,3,1,0\"\u003eMinimal (depends on prop pitch)\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"17,3,2,0\"\u003eExcellent (constant speed)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"17,4,0,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"17,4,0,0\"\u003eComplexity\/Cost\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"17,4,1,0\"\u003eLower; simpler maintenance\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"17,4,2,0\"\u003eHigher; requires specialized gearboxes\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"17,5,0,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"17,5,0,0\"\u003eFlight Feel\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"17,5,1,0\"\u003eMore \"organic\" and traditional\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"17,5,2,0\"\u003eVery \"locked-in\" and robotic\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3 data-path-to-node=\"18\"\u003eWhich is right for the Anthem EPI?\u003c\/h3\u003e\n\u003cp data-path-to-node=\"19\"\u003eThe \u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003ca class=\"ng-star-inserted\" href=\"https:\/\/admin.shopify.com\/store\/gator-rc\/products\/9106880135390?fromInventory=true\" rel=\"noopener\" target=\"_blank\"\u003eAnthem EPI\u003c\/a\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e is \"Contra Ready,\" meaning the nose is designed to accommodate the extra length and weight of a contra drive.\u003c\/p\u003e\n\u003cul data-path-to-node=\"20\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"20,0,0\"\u003eIf you choose the \u003cb data-index-in-node=\"18\" data-path-to-node=\"20,0,0\"\u003eNon-Contra\u003c\/b\u003e variant, ensure you shim your motor mount for the necessary right thrust.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"20,1,0\"\u003eIf you go \u003cb data-index-in-node=\"10\" data-path-to-node=\"20,1,0\"\u003eContra\u003c\/b\u003e, keep the motor axis perfectly aligned with the fuselage centerline.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003ch3\u003eWhy Buy From Gator RC?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFast U.S. shipping\u003c\/li\u003e\n\u003cli\u003eExpert RC support\u003c\/li\u003e\n\u003cli\u003eCarefully packed for safe delivery\u003c\/li\u003e\n\u003cli\u003eTrusted source for premium RC aircraft\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eShipping \u0026amp; Handling\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCarefully packed to protect your airframe\u003c\/li\u003e\n\u003cli\u003eShipped from the USA\u003c\/li\u003e\n\u003cli\u003eCalculated shipping ensures accurate rates\u003c\/li\u003e\n\u003cli style=\"font-weight: bold; color: rgb(255, 42, 0);\"\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003e\u003cstrong\u003eBuilding Services\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003eAre you too busy or in need of building services?\u003cbr\u003e If so let us know we can fully assemble this model for you for a nominal fee.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BJ Craft","offers":[{"title":"Non-Contra","offer_id":48136058699998,"sku":"BJAnthemEpi-non-con","price":2565.0,"currency_code":"USD","in_stock":true},{"title":"Contra","offer_id":48136058732766,"sku":"BJAnthemEpi-con","price":2565.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/1436\/6686\/files\/8.webp?v=1750964516","url":"https:\/\/www.gator-rc.com\/products\/bj-craft-anthem-epi-2m-f3a-rc-airplane-arf-elliptical-wing-non-contra-and-contra","provider":"Gator RC","version":"1.0","type":"link"}