ProTek RC PTK381 "ULP" High-Performance Racing Servo
The 381 Ultra Low Profile Servo brings together cutting-edge brushless technology and unmatched performance, delivering the holding power, speed, and precision that rival coreless servos. With the added advantages of brushless motors—greater efficiency and extended lifespan—this servo is the perfect choice for pro-level builds demanding top-tier reliability and accuracy. Housed in a sleek black anodized aluminum case for a premium look, the servo's design is both rugged and functional. The aluminum upper case ensures extreme durability, while the heat sink center case efficiently dissipates heat and reduces overall weight. Included is an aluminum single-arm clamping servo horn and a complete set of mounting washers for secure, long-lasting installation.
About the ProTek 381ULP:
Size
This High-Performance Racing Servo is specifically designed for 1/10 on-road applications like Formula F1, with its ultra-low profile design allowing it to fit seamlessly into tight chassis spaces. Its compact size ensures optimal weight distribution, enhancing the performance of high-precision on-road vehicles.
Power & Gears
The ProTek RC PTK-381 ULP servo is equipped with a high-performance brushless motor and durable steel gears, ensuring maximum efficiency and longevity. The brushless motor provides smoother operation and higher torque, with less heat generation and longer lifespan compared to traditional motors. Additionally, the steel gears offer exceptional durability, resisting wear and maintaining precise performance even under the high-stress demands of competitive racing environments.
Application & Design
The ProTek ULP servo is a perfect fit for 1/10 F1 chassis, where space is often minimal due to tight servo fitment. Its ultra-low profile and sleek, squarish design ensure easy integration into narrow compartments, optimizing chassis balance and weight distribution.
Features:
- Ideal for 1/10 On-Road and Off-Road Racing Platforms
- Brushless motor
- High voltage circuitry
- Full steel gears
- Full aluminum black anodized heat sink case
- Single offset servo spline
Includes:
- (1) 381 Ultra Low Profile High Speed Brushless Servo
- (1) Aluminum clamping servo horn
- Servo Hardware and grommets
Specifications:
| Application |
1:10 Scale |
| Operating Voltage |
6.0V - 8.4V |
| Operating Temperature |
14° to 140° F (-10 to +60° C) |
| Operating Speed @ 7.4V |
0.06/60° sec |
| Operating Speed @ 8.4V |
0.05/60° sec |
| Dynamic Torque @ 7.4V |
307oz-in (22.1 kg-cm) |
| Dynamic Torque @ 8.4.0V |
381oz-in (27.4 kg-cm) |
| Motor Type |
Brushless Digital |
| Output Shaft |
25T |
| Gears |
Steel |
| Weight |
64g |
| Pulse/Frequency |
1520s / 333hz |
| Dimensions |
39.5x20x25mm |
| Length (Bottom to Mount) |
14mm |
