Servo Overview:
The KST SV905-12 Aluminum Brushless Metal Gear High Voltage Tail Servo is an exceptional choice for pilots of 550 to 700 class RC helicopters seeking top-tier performance and reliability. Designed specifically for high-voltage (HV) operation, this servo runs on twelve volts and supports direct drive from 2-3S LiPo batteries, delivering stable power even under demanding conditions.
About the Metal Gear HV Servo
Performance & Durability
The SV905-12 produces an impressive 236.09 ounce-inches of torque at thirteen volts and operates at a rapid speed of 0.04 seconds per sixty degrees, providing lightning-fast responsiveness for critical flight maneuvers. Equipped with a brushless DC motor, hardened steel gears, and dual ball bearings, it guarantees smooth, accurate, and reliable operation. Its aluminum housing ensures durability, while the servo’s fast response and high torque make it perfect for precise tail control in advanced helicopter flying.
Features:
- Fast 0.04-second response speed
- Brushless DC motor for efficiency and durability
- Dual ball bearings for smooth, precise operation
- Hardened steel gears for strength and reliability
- CNC aluminum case for durability and cooling
- Ideal for tail control on 550-700 class RC helicopters
Includes:
- (1) SV905-12 Aluminum Brushless Metal Gear High Voltage Tail Servo
- Servo Accessories
- Mounting Hardware
Specifications:
| Application | 550-700 Helicopters |
|---|---|
| Input Voltage | 8.4-13.0V |
| Operating Speed @ 8.4V | 0.06sec/60° |
| Operating Speed @ 12.0V | 0.045sec/60° |
| Operating Speed @ 13.0V | 0.04sec/60° |
| Dynamic Torque @ 8.4V | 180.56oz-in (13kg-cm) |
| Dynamic Torque @ 12.0V | 222.22oz-in (16kg-cm) |
| Dynamic Torque @ 13.0V | 236.11oz-in (17kg-cm) |
| Pulse/Frequency | 560Hz |
| Motor Type | Brushless |
| Output Shaft Spline | 25T |
| Gear Material | Hardened Steel |
| Dimensions | 1.59×0.79×1.50in (40.5x20x38mm) |
| Weight | 2.47oz (70g) |
This product was added to our catalog on August 11, 2025
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