Servo selection: torque, speed, gears and voltage
How to select servos for trainers, sport aircraft, large models, cars and boats without under-sizing a control surface.
DS315MG V8.0 Mini Digital Metal Gear Coreless Servo 4.8kg 0.07sec for RC Helicopters is a KST Servos product selected for Helicopter Servos. This page is written for practical buying decisions, with the key fit, size, voltage and performance details organized in one place.
Use it to compare torque, speed, voltage range, construction, dimensions, weight, variants and accessory compatibility before choosing the right component for an RC aircraft, helicopter, car, glider, UAV or workshop installation.
These guides explain the setup, safety checks and accessory choices that usually matter for this product type.
How to select servos for trainers, sport aircraft, large models, cars and boats without under-sizing a control surface.
A buying table for matching servo size, torque, speed, gear type and voltage to trainers, gliders, 3D aircraft, EDF jets and Giant Scale models.
Mechanical setup guide for servo arms, linkage angles, throw, control horns, neutral position and radio setup after geometry is correct.
Make an aircraft calmer for beginners by setting low rates, high rates and expo without hiding mechanical setup problems.
Failsafe setup for electric and fuel aircraft: throttle behavior, receiver signal loss, switch positions and safe verification before flight.
| Technical Specifications | |
| Manufacturer | KST Servos |
| Brand | KST |
| Product Code | BR0023.0031 |
| All Variant SKUs | BR0023.0031 |
| Rated Voltage | DC6.0V |
| Voltage Range | DC4.8V-8.4V |
| Working Frequency | 1520μs/333Hz |
| Default Travel Angle | ±70°=140° Total |
| Temperature Range | -20℃……+65℃ |
| Soft Start | Programmable |
| Programmable | Yes |
| Case Material | Aluminium Alloy |
| Motor Type | Coreless DC Motor |
| Gear Set Material | Hardened Steel |
| Position Sensor | Potentiometer |
| Ball Bearing | 2BB |
| Case Dimensions | 23mm*12mm*27.5mm±0.2mm |
| Weight | 20g±10% |
| KST Collections | Helicopter Servos, Industrial, Mini Servos, DS Series |
| Series | DS Series |
| Size Class | Mini Servos |
| Application | Helicopter Servos |
| Features | CNC Aluminium Case; Programmable; 2 Ball Bearings; With 12mm Coreless Motor; High Precision Metal Gear; Large Stall Torque of 4.8Kg; Lightweight and Compact Design |
| Package Includes | 1 * DS315MG V8.0 Mini Servo; 3 * Plastic Servo Horn; 2 * Mounting Screw; 1 * Servo Horn Screw; Download |
| Item | DS315MG V8.0 Mini Servo |
| Torque | 2.8Kgf.cm@4.8V / 3.5Kgf.cm@6.0V / 4.3Kgf.cm@7.4V / 4.8Kgf.cm@8.4V |
| Speed | 0.10sec/60°@4.8V / 0.09sec/60°@6.0V / 0.08sec/60°@7.4V / 0.07sec/60°@8.4V |
| Product Type | RC |
Tags: KST Servos, BR0023.0031, Helicopter Servos, Industrial & UAV Servos, Mini Servos, DS Series, Gears, RC servo
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