{"product_id":"frsky-xact-bls5404h-brushless-hv-servo-707oz","title":"FrSky Xact BLS5404H Brushless HV Servo – 707 oz-in, 0.11 sec, Soft Start, FBUS Telemetry","description":"\u003cp\u003e\u003cstrong\u003eThe FrSky Xact BLS5404H is a premium giant-scale brushless HV servo engineered for high-load RC aircraft, turbine jets, and precision aerobatic applications.\u003c\/strong\u003e Delivering up to \u003cstrong\u003e707 oz-in of torque at 8.4V\u003c\/strong\u003e with fast \u003cstrong\u003e0.11 sec\/60° speed\u003c\/strong\u003e, Soft Start technology, hall sensor precision, and FBUS telemetry capability, the BLS5404H is designed for pilots who demand serious control authority and reliability.\u003c\/p\u003e\n\n\u003ch2\u003eFrSky Xact BLS5404H Brushless High Torque HV Servo\u003c\/h2\u003e\n\n\u003cp\u003eThe FrSky Xact BLS5404H is part of the Xact 5400 Series brushless servo lineup and is built for demanding RC applications where torque, precision, and durability matter. It features a fully CNC-machined aluminum protective case, metal gear train, brushless motor system, dual precision ball bearings, and high-voltage operation up to 8.4V.\u003c\/p\u003e\n\n\u003cp\u003eWith support for \u003cstrong\u003eFBUS, SBUS, and PWM\u003c\/strong\u003e, this servo works with a wide range of control setups. When used in FBUS mode with compatible FrSky receivers or flight controllers, the servo can provide telemetry feedback such as real-time voltage, current, and temperature.\u003c\/p\u003e\n\n\u003cp\u003eThe integrated \u003cstrong\u003eSoft Start\u003c\/strong\u003e function helps reduce sudden startup shock loads on linkages, gears, and control surfaces during power-up, making it especially useful in large aircraft with high-load control surfaces.\u003c\/p\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\u003eTurbine jets\u003c\/li\u003e\n  \u003cli\u003eIMAC and precision aerobatic aircraft\u003c\/li\u003e\n  \u003cli\u003eLarge rudder and elevator surfaces\u003c\/li\u003e\n  \u003cli\u003eHigh-load scale warbirds\u003c\/li\u003e\n  \u003cli\u003eLarge sport and 3D aircraft\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eUp to \u003cstrong\u003e707 oz-in\u003c\/strong\u003e \/ \u003cstrong\u003e50.9 kg-cm\u003c\/strong\u003e torque at 8.4V\u003c\/li\u003e\n  \u003cli\u003eFast \u003cstrong\u003e0.11 sec\/60°\u003c\/strong\u003e speed at 8.4V\u003c\/li\u003e\n  \u003cli\u003eBrushless motor for efficiency, durability, and long service life\u003c\/li\u003e\n  \u003cli\u003eHall sensor precision for smooth, accurate positioning\u003c\/li\u003e\n  \u003cli\u003eSoft Start technology helps reduce startup shock loads\u003c\/li\u003e\n  \u003cli\u003eSupports \u003cstrong\u003eFBUS, SBUS, and PWM\u003c\/strong\u003e protocols\u003c\/li\u003e\n  \u003cli\u003eTelemetry feedback through FBUS mode: voltage, current, and temperature\u003c\/li\u003e\n  \u003cli\u003eFully CNC-machined aluminum protective case\u003c\/li\u003e\n  \u003cli\u003eHeavy-duty metal gear train\u003c\/li\u003e\n  \u003cli\u003eDual precision ball bearings\u003c\/li\u003e\n  \u003cli\u003eHigh-voltage operation from 4.8V to 8.4V\u003c\/li\u003e\n  \u003cli\u003eConfigurable servo travel: 90°, 120°, or 180°\u003c\/li\u003e\n  \u003cli\u003eFirmware updatable through the FrSky ecosystem\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Choose a Brushless Servo?\u003c\/h3\u003e\n\u003cp\u003eBrushless servos offer longer service life, improved efficiency, smoother operation, and better heat management compared to traditional brushed servos. Combined with hall sensor positioning technology, the BLS5404H delivers precise centering and consistent control authority for demanding giant-scale aircraft applications.\u003c\/p\u003e\n\n\u003ch3\u003eFBUS Telemetry Advantage\u003c\/h3\u003e\n\u003cp\u003eWhen connected through FBUS with compatible FrSky equipment, the Xact BLS5404H can send servo telemetry data back to the radio system. This allows supported setups to monitor useful servo information such as voltage, current, and temperature, helping pilots better understand the health and load of their control system.\u003c\/p\u003e\n\n\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\"\u003e\n  \u003ctr\u003e\n    \u003cth\u003eSpecification\u003c\/th\u003e\n    \u003cth\u003eDetails\u003c\/th\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003eBrand\u003c\/td\u003e\n    \u003ctd\u003eFrSky\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003eModel\u003c\/td\u003e\n    \u003ctd\u003eXact BLS5404H\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003eServo Type\u003c\/td\u003e\n    \u003ctd\u003eBrushless High-Voltage Digital Servo\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003eMotor Type\u003c\/td\u003e\n    \u003ctd\u003eBrushless\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\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\u003eTorque @ 8.4V\u003c\/td\u003e\n    \u003ctd\u003e50.9 kg-cm \/ 706.9 oz-in\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003eSpeed @ 8.4V\u003c\/td\u003e\n    \u003ctd\u003e0.11 sec\/60°\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003eDimensions\u003c\/td\u003e\n    \u003ctd\u003e40 × 20 × 33.5 mm\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003eWeight\u003c\/td\u003e\n    \u003ctd\u003e77.5 g \/ 2.73 oz\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\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003eSupported Protocols\u003c\/td\u003e\n    \u003ctd\u003eFBUS, SBUS, PWM\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003eServo Travel\u003c\/td\u003e\n    \u003ctd\u003eConfigurable: 90°, 120°, 180°\u003c\/td\u003e\n  \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eTorque \u0026amp; Speed Performance\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\"\u003e\n  \u003ctr\u003e\n    \u003cth\u003eVoltage\u003c\/th\u003e\n    \u003cth\u003eTorque\u003c\/th\u003e\n    \u003cth\u003eSpeed\u003c\/th\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003e6.0V\u003c\/td\u003e\n    \u003ctd\u003e43.6 kg-cm \/ 605.5 oz-in\u003c\/td\u003e\n    \u003ctd\u003e0.15 sec\/60°\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003e7.0V\u003c\/td\u003e\n    \u003ctd\u003e47.2 kg-cm \/ 655.5 oz-in\u003c\/td\u003e\n    \u003ctd\u003e0.12 sec\/60°\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003e8.4V\u003c\/td\u003e\n    \u003ctd\u003e\u003cstrong\u003e50.9 kg-cm \/ 706.9 oz-in\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd\u003e\u003cstrong\u003e0.11 sec\/60°\u003c\/strong\u003e\u003c\/td\u003e\n  \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eXact 5400 Series Comparison\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\"\u003e\n  \u003ctr\u003e\n    \u003cth\u003eModel\u003c\/th\u003e\n    \u003cth\u003e6.0V\u003c\/th\u003e\n    \u003cth\u003e7.0V\u003c\/th\u003e\n    \u003cth\u003e8.4V\u003c\/th\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003eBLS5401H\u003c\/td\u003e\n    \u003ctd\u003e17.2 kg-cm \/ 238.9 oz-in\u003cbr\u003e0.05 sec\u003c\/td\u003e\n    \u003ctd\u003e20.0 kg-cm \/ 277.8 oz-in\u003cbr\u003e0.04 sec\u003c\/td\u003e\n    \u003ctd\u003e22.8 kg-cm \/ 316.6 oz-in\u003cbr\u003e0.03 sec\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003eBLS5402H\u003c\/td\u003e\n    \u003ctd\u003e28.0 kg-cm \/ 388.9 oz-in\u003cbr\u003e0.07 sec\u003c\/td\u003e\n    \u003ctd\u003e34.4 kg-cm \/ 477.7 oz-in\u003cbr\u003e0.06 sec\u003c\/td\u003e\n    \u003ctd\u003e38.3 kg-cm \/ 531.9 oz-in\u003cbr\u003e0.05 sec\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003eBLS5403H\u003c\/td\u003e\n    \u003ctd\u003e35.5 kg-cm \/ 493.0 oz-in\u003cbr\u003e0.11 sec\u003c\/td\u003e\n    \u003ctd\u003e43.0 kg-cm \/ 597.2 oz-in\u003cbr\u003e0.09 sec\u003c\/td\u003e\n    \u003ctd\u003e48.9 kg-cm \/ 679.1 oz-in\u003cbr\u003e0.08 sec\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background-color:#eaf7ea;\"\u003e\n    \u003ctd\u003e\u003cstrong\u003eBLS5404H\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd\u003e\n\u003cstrong\u003e43.6 kg-cm \/ 605.5 oz-in\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003e0.15 sec\u003c\/strong\u003e\n\u003c\/td\u003e\n    \u003ctd\u003e\n\u003cstrong\u003e47.2 kg-cm \/ 655.5 oz-in\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003e0.12 sec\u003c\/strong\u003e\n\u003c\/td\u003e\n    \u003ctd\u003e\n\u003cstrong\u003e50.9 kg-cm \/ 706.9 oz-in\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003e0.11 sec\u003c\/strong\u003e\n\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003eBLS5405H\u003c\/td\u003e\n    \u003ctd\u003e46.3 kg-cm \/ 643.0 oz-in\u003cbr\u003e0.17 sec\u003c\/td\u003e\n    \u003ctd\u003e52.9 kg-cm \/ 734.6 oz-in\u003cbr\u003e0.14 sec\u003c\/td\u003e\n    \u003ctd\u003e54.9 kg-cm \/ 762.4 oz-in\u003cbr\u003e0.12 sec\u003c\/td\u003e\n  \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eRecommended Accessories\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eHeavy-duty aluminum servo arms\u003c\/li\u003e\n  \u003cli\u003eFrSky FBUS-capable receivers\u003c\/li\u003e\n  \u003cli\u003eHigh-current switches and power distribution systems\u003c\/li\u003e\n  \u003cli\u003eGiant scale servo extensions\u003c\/li\u003e\n  \u003cli\u003eHeavy-duty linkage hardware\u003c\/li\u003e\n  \u003cli\u003eDual battery systems for large aircraft\u003c\/li\u003e\n\u003c\/ul\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 high-current HV servo operation.\u003c\/li\u003e\n  \u003cli\u003eFor best results, use rigid linkages and high-quality servo arms suitable for giant-scale loads.\u003c\/li\u003e\n  \u003cli\u003eServo telemetry requires compatible FrSky FBUS equipment.\u003c\/li\u003e\n  \u003cli\u003eServo travel and configuration options can be adjusted using supported FrSky configuration tools.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat’s Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eFrSky Xact BLS5404H Brushless High Torque HV Servo\u003c\/li\u003e\n  \u003cli\u003eFactory packaging\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FrSky","offers":[{"title":"Default Title","offer_id":46988924256478,"sku":"03050629","price":79.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/1436\/6686\/files\/xact_frsky.png?v=1776038426","url":"https:\/\/www.gator-rc.com\/products\/frsky-xact-bls5404h-brushless-hv-servo-707oz","provider":"Gator RC","version":"1.0","type":"link"}