What kind of motor does a 3D aircraft model use? Comprehensive analysis of popular models and purchasing guide
Recently, the 3D model aircraft movement has become increasingly popular on major social platforms and model aircraft forums. In particular, the issue of motor selection has become a hot topic among novice players. This article will combine the hot discussions on the Internet in the past 10 days to systematically analyze the core parameters and mainstream models of 3D model aircraft motors for you, helping you quickly lock in a suitable configuration plan.
1. Analysis of core parameters of 3D model aircraft motor
According to actual measurement data from professional forums such as RC Groups and FliteTest, 3D aerobatic flight has three major rigid requirements for motors: high thrust-to-weight ratio, fast response and durability. The following is a comparison table of key parameters:
| parameters | General aircraft model needs | 3D aircraft model needs |
|---|---|---|
| power to weight ratio | 100-150W/kg | 200-300W/kg |
| KV value range | 800-1200KV | 500-900KV (with large propeller) |
| instantaneous current | 1.2 times the continuous current | More than 2 times the continuous current |
2. Ranking of popular motor models in 2023
By crawling the sales data of Taobao, Amazon and other platforms, and combining the playback statistics of YouTube review videos, the five most popular 3D aircraft model motors are as follows:
| Ranking | Model | Applicable models | Peak power | reference price |
|---|---|---|---|---|
| 1 | T-Motor MN5212 | 1.2-1.5m wingspan | 850W | ¥580 |
| 2 | EMAX GT4020 | 3D machine below 1m | 600W | ¥320 |
| 3 | SunnySky X4120S | 1.5-2m stunt machine | 1200W | ¥720 |
3. Practical skills for motor selection
According to the actual measurement suggestions from the latest video of the UP host of B station "Old Model Aircraft Driver":
1.Thrust to weight ratio verification: The hovering state requires a thrust of 1.8:1 or above. For example, a 1kg model requires at least 1.8kg static thrust.
2.temperature control: After 3D flight, the motor surface temperature should be <70°C. If it exceeds this value, the blade size must be adjusted or the throttle curve must be reduced.
3.Battery matching: It is recommended to use 4S battery for high KV motors (＞800KV), and 6S configuration is recommended for low KV motors (＜700KV)
4. Common misunderstandings among novices
Zhihu’s popular Q&A shows that 80% of motor failures are caused by the following incorrect operations:
| Error type | Proportion | solution |
|---|---|---|
| KV value is too high | 45% | Switch to a smaller paddle |
| Insufficient cooling | 30% | Add cooling holes |
5. Forecast of future trends
According to analysis by industry media such as DroneDJ, 3D model aircraft motors will present three major development directions in 2024:
1.Composite material rotor: The application of carbon fiber rotors can reduce the weight of the motor by 15%
2.Intelligent temperature control system: Built-in temperature sensor realizes automatic power reduction protection
3.Modular design: Quickly replace windings to meet the needs of different flight scenarios
When choosing a 3D model aircraft motor, you need to consider your flying style, aircraft size and budget. It is recommended that novices start with mainstream models and gradually master the adjustment skills of the power system so that they can fully utilize the ultimate performance of 3D flight.
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