{"product_id":"kst-a20-3813-v8-0-brushless-hv-servo-43kg-cm-high-torque-servo","title":"KST A20-3813 V8.0 Brushless HV Servo – 43kg.cm High-Torque Servo","description":"\u003ch1\u003eKST A20-3813 V8.0 Brushless HV Servo – 43kg.cm High-Torque Servo\u003c\/h1\u003e\n\u003cp\u003eThe \u003cstrong\u003eKST A20-3813 V8.0 Brushless HV Servo\u003c\/strong\u003e is a high-performance, high-torque digital servo designed for demanding \u003cstrong\u003elarge-scale RC aircraft, aerobatic models and 3D airplanes\u003c\/strong\u003e. With an impressive \u003cstrong\u003e43kg.cm of torque at 8.4V\u003c\/strong\u003e and a fast \u003cstrong\u003e0.12 sec\/60° response\u003c\/strong\u003e, this servo delivers the power, precision and speed required for large control surfaces and high-performance flight.\u003c\/p\u003e\n\u003cp\u003eAt the heart of the A20-3813 is a \u003cstrong\u003ehigh-efficiency brushless DC motor\u003c\/strong\u003e, combined with a heavy-duty \u003cstrong\u003ephosphor bronze and hardened steel gear train\u003c\/strong\u003e. The rigid CNC-machined aluminum housing provides excellent strength and helps dissipate heat during demanding operation.\u003c\/p\u003e\n\u003cp\u003eWith its standard-size 20mm servo case, high-voltage capability and massive torque output, the A20-3813 V8.0 is an excellent choice for \u003cstrong\u003elarge aerobatic RC planes, 3D aircraft, giant-scale models and other applications where reliable high torque is essential\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2\u003eBuilt for Large and High-Performance RC Aircraft\u003c\/h2\u003e\n\u003cp\u003eThe KST A20-3813 V8.0 is designed for pilots who need substantially more power than a conventional standard-size servo can provide.\u003c\/p\u003e\n\u003cp\u003eWith up to \u003cstrong\u003e43kg.cm of torque\u003c\/strong\u003e, it is ideally suited for large control surfaces such as:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eAilerons\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eElevators\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRudders\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFlaps\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eThrottle and other high-load applications\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe powerful brushless motor provides fast and precise movement, while the heavy-duty gear train is engineered to handle the high loads generated by large RC aircraft.\u003c\/p\u003e\n\u003ch2\u003eBrushless Power and High-Voltage Performance\u003c\/h2\u003e\n\u003cp\u003eThe brushless motor offers excellent efficiency, fast response and long-term durability compared with traditional brushed servo motors.\u003c\/p\u003e\n\u003cp\u003eThe servo supports \u003cstrong\u003e6.0V to 8.4V\u003c\/strong\u003e, making it suitable for modern HV receiver and power systems. At the maximum operating voltage of 8.4V, the A20-3813 delivers an impressive \u003cstrong\u003e43kg.cm of torque at just 0.12 sec\/60°\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eTorque and Speed\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e6.0V:\u003c\/strong\u003e 30kg.cm \/ 0.15 sec\/60°\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e7.4V:\u003c\/strong\u003e 38kg.cm \/ 0.13 sec\/60°\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e8.4V:\u003c\/strong\u003e 43kg.cm \/ 0.12 sec\/60°\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis combination of high torque and fast response makes the A20-3813 particularly well suited to demanding \u003cstrong\u003e3D aerobatics and large-scale precision aerobatic models\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2\u003eHeavy-Duty Phosphor Bronze \u0026amp; Hardened Steel Gears\u003c\/h2\u003e\n\u003cp\u003eThe A20-3813 uses a robust \u003cstrong\u003ephosphor bronze and hardened steel gear train\u003c\/strong\u003e designed for high-load applications.\u003c\/p\u003e\n\u003cp\u003eThis heavy-duty gearing provides excellent resistance to wear and helps maintain precise control under the demanding loads generated by large control surfaces.\u003c\/p\u003e\n\u003cp\u003eCombined with the powerful brushless motor and dual ball bearings, the result is a servo designed for serious RC aircraft applications where strength and reliability are critical.\u003c\/p\u003e\n\u003ch2\u003eCNC Aluminum Housing\u003c\/h2\u003e\n\u003cp\u003eThe precision-machined aluminum case provides a rigid mounting platform while helping to dissipate heat generated during high-load operation.\u003c\/p\u003e\n\u003cp\u003eThe compact \u003cstrong\u003e40.5 × 20 × 38mm standard-size housing\u003c\/strong\u003e makes the A20-3813 easy to integrate into many large RC aircraft without requiring an oversized servo installation.\u003c\/p\u003e\n\u003ch2\u003eIdeal for Large-Scale Aerobatic \u0026amp; 3D Models\u003c\/h2\u003e\n\u003cp\u003eThe KST A20-3813 V8.0 is an excellent choice for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eLarge-scale aerobatic RC airplanes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e3D RC aircraft\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eGiant-scale models\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLarge Extra, Edge and Slick aircraft\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHigh-performance aerobatic models\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLarge control surfaces\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eApplications requiring high servo torque and fast response\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf your model requires a powerful, fast and precise standard-size HV servo, the \u003cstrong\u003eKST A20-3813 V8.0\u003c\/strong\u003e offers an outstanding combination of torque, speed and durability.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e43kg.cm maximum torque at 8.4V\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e0.12 sec\/60° speed at 8.4V\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHigh-performance \u003cstrong\u003ebrushless DC motor\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh-voltage operation from 6.0V to 8.4V\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHeavy-duty \u003cstrong\u003ephosphor bronze \u0026amp; hardened steel gears\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePrecision \u003cstrong\u003eCNC aluminum alloy housing\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDual ball bearings\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eStandard-size \u003cstrong\u003e20mm servo case\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e25T \/ 6mm output spline\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e22AWG shielded connection cable\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDesigned for large-scale and high-performance RC aircraft\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eKST A20-3813 V8.0\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eA20-3813 V8.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eServo Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDigital HV Brushless Servo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMotor Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBrushless DC Motor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC 6.0V – 8.4V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRated Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC 7.4V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTorque @ 6.0V\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e30kg.cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTorque @ 7.4V\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e38kg.cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTorque @ 8.4V\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e43kg.cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSpeed @ 6.0V\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.15 sec\/60°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSpeed @ 7.4V\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.13 sec\/60°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSpeed @ 8.4V\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.12 sec\/60°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGear Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePhosphor Bronze \u0026amp; Hardened Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCase Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCNC Aluminum Alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBearings\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 Ball Bearings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Spline\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e25T \/ 6mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDefault Travel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±50° \/ 100° total\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWorking Frequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1520μs \/ 333Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-10°C to +65°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e40.5 × 20 × 38mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e72g ±10%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCable\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e22AWG Shielded Cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e1 × KST A20-3813 V8.0 Brushless HV Servo\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1 × Servo Accessory Set\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eRecommended Application\u003c\/h2\u003e\n\u003cp\u003eFor best performance, use the A20-3813 with a suitable \u003cstrong\u003eHV receiver and power supply capable of safely delivering the required current\u003c\/strong\u003e. Always ensure that your receiver, power system and servo voltage are compatible before installation.\u003c\/p\u003e\n\u003ch3\u003eKST A20-3813 V8.0 – Maximum Power for Large RC Aircraft\u003c\/h3\u003e\n\u003cp\u003eWhen your large RC aircraft demands \u003cstrong\u003ehigh torque, fast response and precise control\u003c\/strong\u003e, the KST A20-3813 V8.0 is built to deliver. Its \u003cstrong\u003e43kg.cm torque, brushless motor, heavy-duty metal gears and CNC aluminum housing\u003c\/strong\u003e make it a powerful choice for serious large-scale and 3D RC aircraft.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Rc Planes","offers":[{"title":"Default Title","offer_id":58805920072064,"sku":null,"price":99.95,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0980\/6954\/5344\/files\/01_758e5996-fa67-4b80-8fed-80803d00e993_1800x1800_jpg.jpg?v=1788001095","url":"https:\/\/www.rc-planes.nl\/de\/products\/kst-a20-3813-v8-0-brushless-hv-servo-43kg-cm-high-torque-servo","provider":"Rc Planes","version":"1.0","type":"link"}