How the Tool Works
This wizard recommends the right motor size and KV rating for your drone build based on frame size, flight style, thrust-to-weight ratio, and battery voltage.
How Motors Are Sized
Motor names (e.g., 2207) indicate:
- Stator Diameter (22mm): Larger diameter = more torque for bigger props
- Stator Height (07mm): Taller stator = more power capacity
Motor Size by Frame
| Frame Size | Recommended Motor | Typical Use |
|---|---|---|
| ≤ 3″ | 1404 / 1507 | Micro, whoop builds |
| 5″ | 2205 / 2207 / 2306 | Freestyle / racing / cinematic |
| 6″-7″ | 2806 / 2812 / 3110 | Long-range, camera platforms |
| 10″+ | 3510 / 4006 / 5008 | Heavy-lift, gimbal platforms |
KV Range by Battery
| Battery | 5″ Motors | 6-7″ Motors |
|---|---|---|
| 3S | 2400-2800 | 1300-1600 |
| 4S | 1700-1960 | 1000-1300 |
| 6S | 1100-1400 | 900-1100 |
Thrust-to-WeightMotor Selection Wizard Image
- 1.5: Minimum for stable hover
- 2.0: Recommended for responsive flight
- 3.0+: High-performance / acrobatic
FAQs
1. What does KV mean on a drone motor?
KV is the RPM per volt (unloaded). A 2300KV motor on 4S (14.8V) spins at ~34,000 RPM unloaded. Higher KV = faster spinning for smaller props; lower KV = more torque for bigger props.
2. How do I choose between 2205, 2207, or 2306?
Larger stator = more power and torque but more weight. 2205 is lighter for racing; 2207 is the most popular all-rounder; 2306 has more thrust for heavier builds.
3. What’s the best motor for a 5″ freestyle drone?
The 2207 1700-1900KV on 4S is the most popular choice, offering a great balance of thrust, efficiency, and control for freestyle and cinematic.
4. Should I choose 4S or 6S?
6S provides more power and efficiency (lower current for same power) but adds weight and cost. 4S is simpler and cheaper for beginners. Use the wizard to match KV to your battery choice.
5. How does motor size affect flight time?
Larger motors are more efficient at carrying heavier payloads but weigh more themselves. For maximum flight time, choose the smallest motor that provides adequate thrust.
6. What happens if my motor is too small?
The drone won’t have enough thrust to lift off or will overheat trying. Check the thrust-to-weight ratio — it should be at least 1.5 with 2.0 recommended.
7. How do I know my motor’s max current?
Check the motor manufacturer’s thrust test data, which shows max amps at various throttle settings for specific prop sizes and voltages.