{"product_id":"frsky-xact-act-coreless-5400-series-hv-servos","title":"FrSky Xact ACT Coreless 5400 Series HV Servos – S5412H, S5414H \u0026 S5415H","description":"\u003ch2\u003eFrSky ACT 5400 Series Coreless HV Servos\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe FrSky ACT 5400 Series Coreless HV Servos deliver fast response, high torque, and dependable control for sport, 3D, aerobatic, and giant-scale RC aircraft.\u003c\/strong\u003e Available in three models — \u003cstrong\u003eS5412H, S5414H, and S5415H\u003c\/strong\u003e — these high-voltage servos are designed for pilots who need smooth movement, strong holding power, and reliable performance in demanding flight applications.\u003c\/p\u003e\n\n\u003cp\u003eBuilt with a \u003cstrong\u003ecoreless motor\u003c\/strong\u003e, \u003cstrong\u003eprecision potentiometer feedback system\u003c\/strong\u003e, fully \u003cstrong\u003eCNC-machined aluminum case\u003c\/strong\u003e, \u003cstrong\u003emetal gear train\u003c\/strong\u003e, \u003cstrong\u003edual precision ball bearings\u003c\/strong\u003e, and integrated \u003cstrong\u003eSoft Start technology\u003c\/strong\u003e, the ACT 5400 Series is engineered to handle sustained control-surface loads flight after flight.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eRecommended Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e50cc–120cc giant-scale RC airplanes\u003c\/li\u003e\n  \u003cli\u003eIMAC and precision aerobatic aircraft\u003c\/li\u003e\n  \u003cli\u003eLarge 3D and sport aircraft\u003c\/li\u003e\n  \u003cli\u003eTurbine jets\u003c\/li\u003e\n  \u003cli\u003eHigh-load rudder, elevator, and aileron surfaces\u003c\/li\u003e\n  \u003cli\u003eScale warbirds and large sport models\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eKey Features – All Models\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoreless motor\u003c\/strong\u003e — faster acceleration and smoother operation compared to conventional brushed servo motors\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrecision potentiometer feedback system\u003c\/strong\u003e — smooth, accurate control response\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSoft Start technology\u003c\/strong\u003e — reduces startup shock loads on gears, linkages, and control surfaces at power-up\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMetal gear train\u003c\/strong\u003e — heavy-duty durability under sustained high-load conditions\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFully CNC-machined aluminum case\u003c\/strong\u003e — rigid construction with excellent heat dissipation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual precision ball bearings\u003c\/strong\u003e — smooth, accurate output shaft support\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-voltage operation\u003c\/strong\u003e — 4.8V to 8.4V compatible\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e333Hz refresh rate\u003c\/strong\u003e — fast, responsive signal processing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eΦ6 25T horn spline\u003c\/strong\u003e — compatible with standard 25T servo arms\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003ePerformance Specifications by Model\u003c\/h3\u003e\n\n\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eModel\u003c\/th\u003e\n      \u003cth\u003eTorque @ 6.0V\u003c\/th\u003e\n      \u003cth\u003eSpeed @ 6.0V\u003c\/th\u003e\n      \u003cth\u003eTorque @ 7.4V\u003c\/th\u003e\n      \u003cth\u003eSpeed @ 7.4V\u003c\/th\u003e\n      \u003cth\u003eTorque @ 8.4V\u003c\/th\u003e\n      \u003cth\u003eSpeed @ 8.4V\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eS5412H\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e22 kg-cm \/ 305.5 oz-in\u003c\/td\u003e\n      \u003ctd\u003e0.07 sec\/60°\u003c\/td\u003e\n      \u003ctd\u003e27 kg-cm \/ 375.0 oz-in\u003c\/td\u003e\n      \u003ctd\u003e0.08 sec\/60°\u003c\/td\u003e\n      \u003ctd\u003e30 kg-cm \/ 416.6 oz-in\u003c\/td\u003e\n      \u003ctd\u003e0.05 sec\/60°\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eS5414H\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e47 kg-cm \/ 652.7 oz-in\u003c\/td\u003e\n      \u003ctd\u003e0.12 sec\/60°\u003c\/td\u003e\n      \u003ctd\u003e55 kg-cm \/ 763.8 oz-in\u003c\/td\u003e\n      \u003ctd\u003e0.10 sec\/60°\u003c\/td\u003e\n      \u003ctd\u003e63 kg-cm \/ 874.9 oz-in\u003c\/td\u003e\n      \u003ctd\u003e0.08 sec\/60°\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eS5415H\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e53 kg-cm \/ 736.0 oz-in\u003c\/td\u003e\n      \u003ctd\u003e0.15 sec\/60°\u003c\/td\u003e\n      \u003ctd\u003e63 kg-cm \/ 874.9 oz-in\u003c\/td\u003e\n      \u003ctd\u003e0.12 sec\/60°\u003c\/td\u003e\n      \u003ctd\u003e71 kg-cm \/ 986.0 oz-in\u003c\/td\u003e\n      \u003ctd\u003e0.10 sec\/60°\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eWhich Model Should I Choose?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eS5412H:\u003c\/strong\u003e Best where speed is the priority. With 0.05 sec\/60° at 8.4V, it works well for ailerons and lighter control surfaces on 30cc–50cc class models.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eS5414H:\u003c\/strong\u003e Strong balance of torque and speed for large rudder and elevator surfaces. Excellent all-around choice for 50cc–100cc giant-scale aircraft.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eS5415H:\u003c\/strong\u003e Maximum torque option at up to 986 oz-in at 8.4V. Best for heavy control surfaces on 100cc–120cc aircraft, turbine jets, and large scale warbirds.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eGeneral Specifications – All Models\u003c\/h3\u003e\n\n\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eSpecification\u003c\/th\u003e\n      \u003cth\u003eDetails\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eServo Type\u003c\/td\u003e\n      \u003ctd\u003eCoreless High-Voltage Digital Servo\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eMotor Type\u003c\/td\u003e\n      \u003ctd\u003eCoreless\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003ePosition Feedback\u003c\/td\u003e\n      \u003ctd\u003ePotentiometer\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eGear Type\u003c\/td\u003e\n      \u003ctd\u003eMetal Gear\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eCase Material\u003c\/td\u003e\n      \u003ctd\u003eFully CNC-Machined Aluminum\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eOperating Voltage\u003c\/td\u003e\n      \u003ctd\u003e4.8V – 8.4V\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eStall Current\u003c\/td\u003e\n      \u003ctd\u003e4.7A @ 6.0V \/ 5.8A @ 7.4V \/ 6.6A @ 8.4V\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eDimensions\u003c\/td\u003e\n      \u003ctd\u003e40 × 20 × 39 mm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eWeight\u003c\/td\u003e\n      \u003ctd\u003e80g\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eHorn Spline\u003c\/td\u003e\n      \u003ctd\u003eΦ6 25T\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eBearings\u003c\/td\u003e\n      \u003ctd\u003eDual Precision Ball Bearings\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eMax Refresh Rate\u003c\/td\u003e\n      \u003ctd\u003e333Hz \/ 1520μs\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eSoft Start\u003c\/td\u003e\n      \u003ctd\u003eYes\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eWhy Choose a Coreless Servo?\u003c\/h3\u003e\n\u003cp\u003eCoreless motors eliminate the heavy iron core found in conventional brushed servo motors, resulting in faster acceleration, smoother operation, and improved responsiveness. This makes the ACT 5400 Series a strong choice for pilots who want precise control feel and fast reaction from their aircraft.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eSoft Start Technology\u003c\/h3\u003e\n\u003cp\u003eAll three ACT 5400 Series models include integrated \u003cstrong\u003eSoft Start\u003c\/strong\u003e, which gradually initializes servo movement at power-on instead of snapping immediately to position. This helps reduce stress on gears, pushrods, control horns, hinges, and large control surfaces during startup.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eImportant Setup Notes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eUse a properly rated receiver battery, regulator, or power distribution system for HV servo operation.\u003c\/li\u003e\n  \u003cli\u003eAt 8.4V, stall current can reach 6.6A, so power system capacity should be planned accordingly.\u003c\/li\u003e\n  \u003cli\u003eFor best results, use rigid linkages and heavy-duty servo arms rated for giant-scale loads.\u003c\/li\u003e\n  \u003cli\u003eDual battery systems are recommended for large aircraft running multiple HV servos simultaneously.\u003c\/li\u003e\n  \u003cli\u003eAlways verify direction, travel, centering, and linkage geometry before flight.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eFrSky ACT 5400 Series Coreless HV Servo — selected model: S5412H, S5414H, or S5415H\u003c\/li\u003e\n  \u003cli\u003eServo arms\u003c\/li\u003e\n  \u003cli\u003eMounting screws\u003c\/li\u003e\n  \u003cli\u003eFactory packaging\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FrSky","offers":[{"title":"S5412H","offer_id":47659194122462,"sku":"03050657","price":49.95,"currency_code":"USD","in_stock":true},{"title":"S5414H","offer_id":47659194155230,"sku":"03050662","price":49.95,"currency_code":"USD","in_stock":true},{"title":"S5415H","offer_id":47659194187998,"sku":"03050658","price":49.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/1436\/6686\/files\/frsky_act_bls5404.png?v=1778082074","url":"https:\/\/www.gator-rc.com\/products\/frsky-xact-act-coreless-5400-series-hv-servos","provider":"Gator RC","version":"1.0","type":"link"}