Servo Specs, Reviews, & Comparison Tool
Ace RC S1903 - Standard Servo
Specifications
| Last Updated: | 2025-08-03 |
| Modulation: | Analog |
| Torque: |
4.8V: 41.70 oz-in (3.00 kg-cm) |
| Speed: |
4.8V: 0.19 sec/60° |
| Weight: | 1.64 oz (46.5 g) |
| Dimensions: |
Length:1.59 in (40.4 mm) Width:0.79 in (20.1 mm) Height:1.49 in (37.8 mm) |
| Motor Type: | (add) |
| Gear Type: | Plastic |
| Rotation/Support: | Bushing |
| Rotational Range: | (add) |
| Pulse Cycle: | (add) |
| Pulse Width: | (add) |
| Connector Type: | (add) |
*We may earn a commission from your purchase.
Notes
- The discontinued Ace RC S1903 is a 'sport' grade standard analog servo that has long been a favorite among RC enthusiasts for its reliability and versatility. As a step up from the most basic standard servos, the S1903 incorporates dual ball bearings on the output shaft, a feature that significantly enhances its performance and longevity. The ball bearings provide a smoother, more precise action and reduce the wear and tear on the geartrain, resulting in a servo that not only feels more connected but also lasts longer. This makes the S1903 an excellent choice for a wide range of applications, from the steering and throttle control of 1/10 scale on-road and off-road vehicles to the flight control surfaces of sport and scale aircraft. Its blend of performance, durability, and affordability makes it a true 'jack-of-all-trades' servo that is at home in a variety of models.
- The S1903's reliable motor and durable plastic gear train provide a good balance of speed and torque for most sport-level applications. Its performance is predictable and consistent, giving the user the confidence to push their models a little harder. The universal connector ensures compatibility with all major radio systems, making it a convenient upgrade or replacement for less capable stock servos. For the hobbyist who is looking for a servo that offers a tangible performance improvement over basic RTR components without breaking the bank, the S1903 is an ideal choice. Its reputation for reliability has made it a go-to servo for many seasoned modelers who value a component that they can trust in their everyday flyers and bashers. The Ace RC S1903 is a classic sport servo that continues to deliver exceptional value and performance.
- Ace RC S1903MG is the same servo, but with metal and plastic gears.
Similar Servos
Reviews of Ace RC S1903 (5)
Submit a review of Ace RC S1903