{"title":"RC Helicopter Servos","description":"\u003cp\u003eUltra-fast response and high-holding torque digital servos engineered for RC helicopter swashplates and tail rotors. Featuring coreless and brushless motors with durable metal gear sets for crisp, precise cyclic and rudder control.\u003c\/p\u003e","products":[{"product_id":"ds315mg-v8-0-mini-digital-metal-gear-coreless-servo-4-8kg-0-07sec-for-rc-helicopters","title":"KST DS315MG V8.0 HV Mini Digital Coreless Servo 4.8Kgf.cm 0.07sec for RC Helicopters","description":"\u003cp\u003eDesigned specifically for high-performance RC micro\/mini helicopters, 450-class cyclics, and agile fixed-wing aircraft, the \u003cstrong\u003eKST DS315MG V8.0\u003c\/strong\u003e mini digital servo delivers exceptional holding torque and blistering transit speeds in an ultra-compact 20g package. Featuring a high-response 12mm coreless motor, hardened steel gear train, and native 2S LiPo high-voltage compatibility (4.8V–8.4V), it ensures razor-sharp cyclic authority and precise centering under intense aerodynamic stress.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e12mm Coreless Motor:\u003c\/strong\u003e Instant throttle response, linear acceleration, and ultra-low latency control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Voltage Operation:\u003c\/strong\u003e Direct 2S LiPo capable (4.8V–8.4V), eliminating the need for dedicated voltage regulators.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardened Steel Geartrain:\u003c\/strong\u003e Dual ball-bearing supported metal drive train engineered for zero backlash and superior crash resistance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull CNC Aluminum Casing:\u003c\/strong\u003e Rugged protection and rapid thermal dissipation during aggressive 3D maneuvers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProgrammable \u0026amp; Soft Start:\u003c\/strong\u003e Customize travel limits and enjoy smooth soft-start protection upon power-up.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e DS315MG V8.0 Mini Digital Servo\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated Voltage:\u003c\/strong\u003e DC 6.0V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Range:\u003c\/strong\u003e DC 4.8V – 8.4V (2S LiPo compatible)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor Type:\u003c\/strong\u003e 12mm Coreless DC Motor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGear Set Material:\u003c\/strong\u003e Hardened Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCase Material:\u003c\/strong\u003e CNC Aluminum Alloy\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBearings:\u003c\/strong\u003e Dual Ball Bearings (2BB)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePosition Sensor:\u003c\/strong\u003e High-Precision Potentiometer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Frequency:\u003c\/strong\u003e 1520μs \/ 333Hz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDefault Travel Angle:\u003c\/strong\u003e ±70° (140° Total)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e -20°C to +65°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSoft Start \/ Programmability:\u003c\/strong\u003e Yes (Programmable)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 23.0 × 12.0 × 27.5 mm (±0.2mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 20g (±10%)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003ePerformance Ratings\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStall Torque:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e2.8 kgf.cm @ 4.8V\u003c\/li\u003e\n\u003cli\u003e3.5 kgf.cm @ 6.0V\u003c\/li\u003e\n\u003cli\u003e4.3 kgf.cm @ 7.4V\u003c\/li\u003e\n\u003cli\u003e4.8 kgf.cm @ 8.4V\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Speed (No-Load):\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e0.10 sec\/60° @ 4.8V\u003c\/li\u003e\n\u003cli\u003e0.09 sec\/60° @ 6.0V\u003c\/li\u003e\n\u003cli\u003e0.08 sec\/60° @ 7.4V\u003c\/li\u003e\n\u003cli\u003e0.07 sec\/60° @ 8.4V\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eDimensions \u0026amp; Sizing\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0846\/8280\/1402\/files\/DS315SIZE01.png?v=1789025736\" alt=\"KST DS315MG V8.0 Dimensions Diagram 1\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0846\/8280\/1402\/files\/DS315SIZE02.png?v=1789025737\" alt=\"KST DS315MG V8.0 Dimensions Diagram 2\"\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDocumentation\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0846\/8280\/1402\/files\/DS315MG_V8.0_Technical_Specification.pdf?v=1789028810\" rel=\"noopener noreferrer\" target=\"_blank\" title=\"DS315MG V8.0 Technical Specification\"\u003eDS315MG V8.0 Technical Specification\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KST","offers":[{"title":"Default Title","offer_id":50272696074490,"sku":null,"price":33.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0846\/8280\/1402\/files\/DS315MG-2.png?v=1789014713"},{"product_id":"sv15-12-shv-mini-coreless-digital-servo-dual-ball-bearing-20-0kgf-cm-0-10sec-60-for-rc-helicopters-industrial-uavs-robotics","title":"KST SV15-12 SHV 12V Mini Coreless Servo 20Kgf.cm 0.10sec for RC Helicopters \u0026 UAVs","description":"\u003cp\u003eWhen your airframe demands maximum torque, blinding speed, and the ability to run directly off a 3S LiPo without voltage regulation, the \u003cstrong\u003eKST SV15-12\u003c\/strong\u003e Super High-Voltage mini coreless digital servo is the answer. Delivering 20.0 kgf.cm at 13V and a 0.10s\/60° no-load response in a compact 35g package, it brings professional-grade cyclic precision and tail authority to RC helicopters, industrial-grade UAV control surfaces, and high-torque robotics applications where every gram and millisecond counts.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuper High-Voltage (SHV) Direct Drive:\u003c\/strong\u003e Native 8.4V–13.0V operation supports 3S LiPo direct connection — eliminating voltage regulators, reducing weight, and simplifying wiring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Performance Coreless Motor:\u003c\/strong\u003e Delivers instant linear response, ultra-low latency cyclic control, and smooth torque across the full travel range with minimal deadband.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20.0 kgf.cm Peak Torque:\u003c\/strong\u003e Class-leading stall torque at 13V provides exceptional cyclic authority and tail hold under aggressive 3D maneuvers and high-disc-loading conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardened Steel Geartrain:\u003c\/strong\u003e Precision-cut steel gears with dual ball bearing output shaft support deliver zero-backlash control and long-term durability under sustained high-load operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull CNC Aluminum Casing:\u003c\/strong\u003e Machined alloy housing provides maximum structural rigidity, precise servo bay fitment, and rapid heat dissipation during extended high-current operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProgrammable \u0026amp; Soft Start:\u003c\/strong\u003e Configurable travel limits and soft-start protection for safe power-up and precise control surface tuning across helicopter, UAV, and robotics platforms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Application Range:\u003c\/strong\u003e Engineered for RC helicopters, industrial UAVs, and robotic actuator applications requiring compact high-torque servo solutions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e SV15-12 SHV Mini Coreless Digital Servo\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated Voltage:\u003c\/strong\u003e DC 12.0V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Range:\u003c\/strong\u003e DC 8.4V – 13.0V (3S LiPo compatible)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor Type:\u003c\/strong\u003e Coreless DC Motor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGear Set Material:\u003c\/strong\u003e Hardened Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCase Material:\u003c\/strong\u003e CNC Aluminum Alloy\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBearings:\u003c\/strong\u003e Dual Ball Bearings (2BB)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePosition Sensor:\u003c\/strong\u003e Potentiometer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Frequency:\u003c\/strong\u003e 1520μs \/ 333Hz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDefault Travel Angle:\u003c\/strong\u003e ±60° (120° Total)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e -10°C to +65°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSoft Start \/ Programmability:\u003c\/strong\u003e Yes (Programmable)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 33.0 × 15.0 × 30.0 mm (±0.2mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 35g (±10%)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003ePerformance Ratings\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStall Torque:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e15.0 kgf.cm @ 8.4V\u003c\/li\u003e\n\u003cli\u003e18.0 kgf.cm @ 12.0V\u003c\/li\u003e\n\u003cli\u003e20.0 kgf.cm @ 13.0V\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Speed (No-Load):\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e0.15 sec\/60° @ 8.4V\u003c\/li\u003e\n\u003cli\u003e0.11 sec\/60° @ 12.0V\u003c\/li\u003e\n\u003cli\u003e0.10 sec\/60° @ 13.0V\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStart Current:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e1.50A @ 8.4V\u003c\/li\u003e\n\u003cli\u003e2.08A @ 12.0V\u003c\/li\u003e\n\u003cli\u003e2.25A @ 13.0V\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eDimensions \u0026amp; Sizing\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0846\/8280\/1402\/files\/SV15-12-02.png?v=1789532745\" alt=\"KST SV15-12 Servo Dimensions Diagram 1\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0846\/8280\/1402\/files\/SV15-12-01.png?v=1789532745\" alt=\"KST SV15-12 Servo Dimensions Diagram 2\"\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDocumentation\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0846\/8280\/1402\/files\/SV15-12_Technical_Specifcation.pdf?v=1789532755\" rel=\"noopener noreferrer\" target=\"_blank\" title=\"SV15-12 Technical Specification\"\u003eSV15-12 Technical Specification\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KST","offers":[{"title":"Default Title","offer_id":50437442928890,"sku":null,"price":83.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0846\/8280\/1402\/files\/SV15-12-3.png?v=1789014744"},{"product_id":"sv905-12-hv-brushless-metal-gear-17kgf-cm-0-04sec-tail-servo-for-550-700-class-rc-helicopters","title":"KST SV905-12 SHV 12V Brushless Tail Servo 17Kgf.cm 0.04sec for 550-700 RC Helicopters","description":"\u003cp\u003eEngineered exclusively for demanding 550 to 700 class 3D and F3C competition helicopters, the \u003cstrong\u003eKST SV905-12\u003c\/strong\u003e high-voltage brushless tail servo delivers blistering 0.040s\/60° transit speed, an immense 17 kgf.cm of holding torque at 13V, and a dedicated \u003cstrong\u003e760μs \/ 560Hz narrow-band\u003c\/strong\u003e working frequency. Featuring direct 3S LiPo \/ 12V battery drive capability, a high-efficiency brushless motor, and hardened steel gears housed in a full CNC aluminum casing, the SV905-12 locks in rock-solid tail authority through the most violent pirouetting maneuvers and high-speed backward flight.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUltra-Fast 760μs \/ 560Hz Narrow Band:\u003c\/strong\u003e Purpose-built for modern flybarless (FBL) gyro tail channels, delivering instantaneous corrections, ultra-low latency, and pinpoint stopping power without bounce-back.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSuper High-Voltage (SHV) Direct Drive:\u003c\/strong\u003e Native 8.0V–13.0V operating range supports direct 3S LiPo connection — bypassing separate voltage regulators, cutting system weight, and simplifying wiring.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBlistering 0.040s Transit Speed:\u003c\/strong\u003e Blazing-fast 0.040 sec\/60° response at 13V (0.045s at 12V) ensures immediate tail lock under sudden pitch-pump and load changes.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrushless DC Motor:\u003c\/strong\u003e Delivers higher sustained torque efficiency, cooler running temperatures, and exceptional lifespan with zero brush degradation under extreme 3D flight loads.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHardened Steel Geartrain:\u003c\/strong\u003e Precision-cut steel gears with dual ball bearing support eliminate slop and resist shock loads from aggressive tail stops.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFull CNC Aluminum Casing:\u003c\/strong\u003e Precision-machined alloy housing provides structural rigidity, exact mount alignment, and rapid thermal dissipation during high-power sessions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProgrammable:\u003c\/strong\u003e Supports customizable parameters for fine-tuning via KST programming tool (check programming tool manual for voltage compatibility).\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e SV905-12 Brushless Tail Servo\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e 550–700 Class RC Helicopter Tail Rotor\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRated Voltage:\u003c\/strong\u003e DC 12.0V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoltage Range:\u003c\/strong\u003e DC 8.0V – 13.0V (2S–3S LiPo Direct Drive)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWorking Frequency:\u003c\/strong\u003e 760μs \/ 560Hz (Tail Gyro Dedicated)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMotor Type:\u003c\/strong\u003e Brushless DC Motor\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGear Set Material:\u003c\/strong\u003e Hardened Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCase Material:\u003c\/strong\u003e CNC Aluminum Alloy\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBearings:\u003c\/strong\u003e Dual Ball Bearings (2BB)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePosition Sensor:\u003c\/strong\u003e Potentiometer\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e -10°C to +65°C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProgrammable:\u003c\/strong\u003e Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 40.5 × 20.0 × 38.0 mm (±0.2mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 70g (±10%)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003ePerformance Ratings\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStall Torque:\u003c\/strong\u003e\n    \u003cul\u003e\n      \u003cli\u003e13 kgf.cm @ 8.4V\u003c\/li\u003e\n      \u003cli\u003e16 kgf.cm @ 12.0V\u003c\/li\u003e\n      \u003cli\u003e17 kgf.cm @ 13.0V\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Speed (No-Load):\u003c\/strong\u003e\n    \u003cul\u003e\n      \u003cli\u003e0.060 sec\/60° @ 8.4V\u003c\/li\u003e\n      \u003cli\u003e0.045 sec\/60° @ 12.0V\u003c\/li\u003e\n      \u003cli\u003e0.040 sec\/60° @ 13.0V\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eDimensions \u0026amp; Sizing\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0846\/8280\/1402\/files\/SV905-12-02.png?v=1789615016\" alt=\"KST SV905-12 Servo Dimensions Diagram 1\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0846\/8280\/1402\/files\/SV905-12-01.png?v=1789615016\" alt=\"KST SV905-12 Servo Dimensions Diagram 2\"\u003e\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eDocumentation\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0846\/8280\/1402\/files\/SV905-12_Specification_d276fb57-5276-4d0c-a58b-f59a9633b49f.pdf?v=1789615028\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eDownload SV905-12 HV Brushless Servo Technical Specification Sheet (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KST","offers":[{"title":"Default Title","offer_id":50444214698234,"sku":null,"price":88.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0846\/8280\/1402\/files\/SV905-12-2.png?v=1789014748"},{"product_id":"sv915-12-hv-brushless-metal-gear-30kgf-cm-0-07sec-cyclic-servo-for-550-700-class-rc-helicopters","title":"KST SV915-12 SHV 12V Brushless Cyclic Servo 30Kgf.cm 0.07sec for 550-700 RC Helicopters","description":"\u003cp\u003eDesigned specifically to conquer the extreme cyclic loads of 550 to 700 class 3D and F3C competition helicopters, the \u003cstrong\u003eKST SV915-12\u003c\/strong\u003e super high-voltage brushless cyclic servo delivers an immense \u003cstrong\u003e30 kgf.cm of stall torque\u003c\/strong\u003e and a blistering 0.07s\/60° transit speed at 13V. Featuring direct 3S LiPo \/ 12V battery drive capability, an ultra-durable brushless motor, and hardened steel gears enclosed in a full CNC aluminum casing, the SV915-12 provides the unyielding swashplate authority and instantaneous pitch response that aggressive competition pilots demand.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColossal 30 kgf.cm Holding Torque:\u003c\/strong\u003e Provides massive swashplate control authority under extreme collective pitch-pumps and high-speed directional changes, eliminating cyclic deflection.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSuper High-Voltage (SHV) Direct Drive:\u003c\/strong\u003e Wide 8.0V–13.0V operating range allows direct connection to 3S LiPo receiver packs — eliminating heavy BEC voltage regulators, simplifying airframe wiring, and lowering system weight.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBlistering 0.07s Speed:\u003c\/strong\u003e Fast 0.07 sec\/60° transit response at 13V (0.08s at 12V) ensures instantaneous flybarless (FBL) cyclic tracking and razor-sharp maneuvering precision.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Efficiency Brushless DC Motor:\u003c\/strong\u003e Delivers higher sustained torque output, cooler operating temperatures, and exceptional service life with zero brush wear under relentless 3D flight routines.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHardened Steel Geartrain:\u003c\/strong\u003e Precision-cut steel gears supported by dual ball bearings minimize backlash, resist impact loads from hard autorotations, and maintain precise centering over hundreds of flights.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFull CNC Aluminum Casing:\u003c\/strong\u003e Precision-machined alloy housing provides maximum structural rigidity, exact mounting alignment, and rapid thermal dissipation during high-power sessions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProgrammable:\u003c\/strong\u003e Supports customizable servo parameters via KST programming tool (please refer to programming tool manual for voltage compatibility).\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e SV915-12 Brushless Cyclic Servo\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e 550–700 Class RC Helicopter Cyclic \/ Swashplate\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRated Voltage:\u003c\/strong\u003e DC 12.0V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoltage Range:\u003c\/strong\u003e DC 8.0V – 13.0V (2S–3S LiPo Direct Drive)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWorking Frequency:\u003c\/strong\u003e 760μs \/ 560Hz\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMotor Type:\u003c\/strong\u003e Brushless DC Motor\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGear Set Material:\u003c\/strong\u003e Hardened Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCase Material:\u003c\/strong\u003e CNC Aluminum Alloy\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBearings:\u003c\/strong\u003e Dual Ball Bearings (2BB)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePosition Sensor:\u003c\/strong\u003e Potentiometer\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e -10°C to +65°C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProgrammable:\u003c\/strong\u003e Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 40.5 × 20.0 × 38.0 mm (±0.2mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 70g (±10%)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003ePerformance Ratings\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStall Torque:\u003c\/strong\u003e\n    \u003cul\u003e\n      \u003cli\u003e24 kgf.cm @ 8.4V\u003c\/li\u003e\n      \u003cli\u003e28 kgf.cm @ 12.0V\u003c\/li\u003e\n      \u003cli\u003e30 kgf.cm @ 13.0V\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Speed (No-Load):\u003c\/strong\u003e\n    \u003cul\u003e\n      \u003cli\u003e0.10 sec\/60° @ 8.4V\u003c\/li\u003e\n      \u003cli\u003e0.08 sec\/60° @ 12.0V\u003c\/li\u003e\n      \u003cli\u003e0.07 sec\/60° @ 13.0V\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eDimensions \u0026amp; Sizing\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0846\/8280\/1402\/files\/SV915-12-02.png?v=1789630022\" alt=\"KST SV915-12 Servo Dimensions Diagram 1\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0846\/8280\/1402\/files\/SV915-12-01.png?v=1789630022\" alt=\"KST SV915-12 Servo Dimensions Diagram 2\"\u003e\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eDocumentation\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0846\/8280\/1402\/files\/SV915-12_Specification_e5e8b905-0ed5-41fe-817d-78f31b91524d.pdf?v=1789629799\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eDownload SV915-12 HV Brushless Servo Technical Specification Sheet (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KST","offers":[{"title":"Default Title","offer_id":50446372274426,"sku":null,"price":88.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0846\/8280\/1402\/files\/SV915-12-4.png?v=1789014756"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0846\/8280\/1402\/collections\/KST01102.jpg?v=1789726488","url":"https:\/\/kstdigital.com\/collections\/rc-helicopter-servos.oembed","provider":"KSTDigital","version":"1.0","type":"link"}