What kind of steering gear is used for fixed-wing tail: comprehensive analysis and purchasing guide
Among aircraft model enthusiasts, the choice of tail servo for fixed-wing aircraft is a key issue. The performance of the steering gear directly affects the controllability and stability of the aircraft. This article will combine the hot topics and hot content on the Internet in the past 10 days to provide you with a detailed analysis of the key points for selecting fixed-wing tail servos, and provide structured data for reference.
1. Basic requirements for fixed-wing tail servo

The tail servo needs to meet the following basic requirements:
1.sufficient torque: The tail servo needs to withstand the aerodynamic load during flight. Insufficient torque will cause the rudder surface to respond slowly.
2.Fast response: When flying at high speed, the response speed of the servo directly affects the control accuracy.
3.High reliability: The servo must be able to remain stable during long-term use to avoid mid-air failure.
2. Recommended popular steering gear models
According to the popularity of discussions on the Internet in the past 10 days, the following are the commonly used servos for fixed-wing tails:
| Servo model | Torque (kg·cm) | Speed (s/60°) | Voltage range (V) | Price range (yuan) |
|---|---|---|---|---|
| Savox SH-0255MG | 3.7 | 0.10 | 4.8-6.0 | 200-250 |
| Futaba S3001 | 3.2 | 0.23 | 4.8-6.0 | 150-180 |
| Hitec HS-422 | 3.0 | 0.21 | 4.8-6.0 | 120-150 |
| EMAX ES08MA II | 2.5 | 0.12 | 4.8-6.0 | 60-80 |
3. Key factors when purchasing a steering gear
1.Aircraft dimensions and weight: Small fixed wing (wingspan<1.5米)可选择扭矩2-3kg·cm的舵机;中型(翼展1.5-2米)需要3-5kg·cm;大型(翼展>2 meters) It is recommended to exceed 5kg·cm.
2.flight speed: High-speed aircraft (>100km/h) should choose a servo with speed <0.15s/60°, and low-speed aircraft can be relaxed to 0.2s/60°.
3.budget: For entry-level brands, choose EMAX and other brands, and for professional-level brands, Savox, Futaba, etc. are recommended.
4. Recent hot topics of discussion
1.Digital servo vs analog servo: Digital servos have higher accuracy but consume a lot of power, while analog servos are more cost-effective.
2.Metal gears vs plastic gears: Metal gears are more durable but heavy, plastic gears are lightweight but have a shorter lifespan.
3.Waterproof performance: In the recent rainy season, the demand for waterproof servos, such as Savox SW-1210SG, has increased.
5. Installation and debugging suggestions
1. Make sure the servo is installed firmly to avoid loosening caused by vibration.
2. Use high-quality rudder horns to avoid plastic rudder horns from breaking under high loads.
3. Check the servo cable regularly to prevent aging and damage.
4. Test the rudder stroke before flying to ensure there is no interference.
6. Summary
Choosing a fixed-wing tail servo requires comprehensive consideration of aircraft parameters, flight requirements and budget. Recently popular models such as Savox SH-0255MG and EMAX ES08MA II are good choices. It is recommended that model aircraft enthusiasts make their purchase based on their actual situation and refer to the data provided in this article.
Final reminder: Flight safety is of paramount importance, and investment in high-quality servos is worthwhile. Happy flying!
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