How to match an electric motor to an RC aircraft
A practical guide to motor KV, voltage, current, thrust, aircraft weight and flight style so the power system matches the model.
T-Motor AT3520 Long Shaft Fixed Wing UAV Motor KV550/KV720/KV850 is a T-Motor catalog item in Civilian UAV Motors. Review the model details below and request compatibility and supply information for civilian use.
| Brand | T-Motor |
|---|---|
| Model | AT3520 Long Shaft Fixed Wing UAV Motor KV550/KV720/KV850 |
| Manufacturer SKU | T-MOTOR000794 |
| Test Item | Long Shaft KV550 | Weight (Incl. Cable) | 218g |
| Motor Dimensions | Φ43*65mm | Internal Resistance | 31mΩ |
| Lead | Enameled Wire100mm | Configuration | 12N14P |
| Shaft Diameter | IN:5mmOUT:5mm | Rated Voltage(Lipo) | 4-6S |
| Idle Current(10V) | 1.1A | Peak Current(180s) | 50A |
| Max Power (180S) | 1100W | Recommendation | / |
| Test Item | Long Shaft KV720 | Weight (Incl. Cable) | 219g |
| Motor Dimensions | Φ43*65mm | Internal Resistance | 20mΩ |
| Lead | Enameled Wire100mm | Configuration | 12N14P |
| Shaft Diameter | IN:5mmOUT:5mm | Rated Voltage(Lipo) | 4-5S |
| Idle Current(10V) | 1.6A | Peak Current(180s) | 70A |
| Max Power (180S) | 1300W | Recommendation | / |
| Test Item | Long Shaft KV850 | Weight (Incl. Cable) | 221g |
| Motor Dimensions | Φ43*65mm | Internal Resistance | 14mΩ |
| Lead | Enameled Wire100mm | Configuration | 12N14P |
| Shaft Diameter | IN:5mmOUT:5mm | Rated Voltage(Lipo) | 3-4S |
| Idle Current(10V) | 2.0A | Peak Current(180s) | 70A |
| Max Power (180S) | 1100W | Recommendation | / |
| Test Item | Long Shaft KV720 | Weight (Incl. Cable) | 219g |
| Motor Dimensions | Φ43*65mm | Internal Resistance | 20mΩ |
| Lead | Enameled Wire100mm | Configuration | 12N14P |
| Shaft Diameter | IN:5mmOUT:5mm | Rated Voltage(Lipo) | 4-5S |
| Idle Current(10V) | 1.6A | Peak Current(180s) | 70A |
| Max Power (180S) | 1300W | Recommendation | / |
| Test Item | Long Shaft KV850 | Weight (Incl. Cable) | 221g |
| Motor Dimensions | Φ43*65mm | Internal Resistance | 14mΩ |
| Lead | Enameled Wire100mm | Configuration | 12N14P |
| Shaft Diameter | IN:5mmOUT:5mm | Rated Voltage(Lipo) | 3-4S |
| Idle Current(10V) | 2.0A | Peak Current(180s) | 70A |
| Max Power (180S) | 1100W | Recommendation | / |
| Type | Propeller | Throttle | Voltage(V) | Current(A) | Power(W) | RPM | Torque(N*m) | Thrust(g) | Efficiency(g/W) | OperatingTemperature(℃) |
| AT3520Long ShaftKV550 | APC13*6.5 | 40% | 22.49 | 4.96 | 111.61 | 4834 | 0.162 | 912 | 8.18 | 41(AmbientTemperature:/) |
| 45% | 22.47 | 6.00 | 134.81 | 5181 | 0.187 | 1053 | 7.81 | |||
| 50% | 22.45 | 7.26 | 163.08 | 5558 | 0.215 | 1208 | 7.41 | |||
| 55% | 22.43 | 8.88 | 199.17 | 5990 | 0.249 | 1396 | 7.01 | |||
| 60% | 22.39 | 10.87 | 243.44 | 6404 | 0.290 | 1619 | 6.65 | |||
| 65% | 22.35 | 13.47 | 300.90 | 6895 | 0.340 | 1890 | 6.28 | |||
| 70% | 22.30 | 16.12 | 359.46 | 7313 | 0.386 | 2140 | 5.95 | |||
| 75% | 22.25 | 19.27 | 428.67 | 7732 | 0.438 | 2412 | 5.63 | |||
| 80% | 22.19 | 22.60 | 501.48 | 8119 | 0.494 | 2711 | 5.41 | |||
| 90% | 22.06 | 30.77 | 678.62 | 8940 | 0.607 | 3289 | 4.85 | |||
| 100% | 21.99 | 34.89 | 767.14 | 9252 | 0.667 | 3575 | 4.66 | |||
| APC14*7 | 40% | 22.49 | 5.15 | 115.79 | 4423 | 0.185 | 973 | 8.40 | 59(AmbientTemperature:/) | |
| 45% | 22.46 | 6.71 | 150.66 | 4888 | 0.224 | 1169 | 7.76 | |||
| 50% | 22.43 | 8.50 | 190.74 | 5313 | 0.268 | 1408 | 7.38 | |||
| 55% | 22.37 | 11.18 | 250.13 | 5785 | 0.326 | 1689 | 6.75 | |||
| 60% | 22.34 | 13.70 | 305.98 | 6192 | 0.380 | 1954 | 6.39 | |||
| 65% | 22.29 | 16.90 | 376.75 | 6664 | 0.440 | 2247 | 5.96 | |||
| 70% | 22.23 | 20.26 | 450.36 | 7056 | 0.498 | 2529 | 5.62 | |||
| 75% | 22.16 | 24.56 | 544.30 | 7454 | 0.570 | 2863 | 5.26 | |||
| 80% | 22.08 | 29.20 | 644.83 | 7818 | 0.646 | 3216 | 4.99 | |||
| 90% | 21.93 | 38.47 | 843.54 | 8481 | 0.776 | 3787 | 4.49 | |||
| 100% | 21.83 | 44.28 | 966.63 | 8762 | 0.854 | 4116 | 4.26 | |||
| Note: Motor temperature is motor surface temperature at 100% throttle running 3mins.(Date above based on benchtest are for reference only, comparion with that of other motor types is not recommended.) | ||||||||||
| AT3520Long ShaftKV720 | APC13*8 | 40% | 18.47 | 7.46 | 137.74 | 4880 | 0.194 | 1004 | 7.29 | 54(AmbientTemperature:/) |
| 45% | 18.43 | 9.41 | 173.40 | 5303 | 0.231 | 1194 | 6.88 | |||
| 50% | 18.39 | 11.90 | 218.85 | 5750 | 0.277 | 1428 | 6.52 | |||
| 55% | 18.34 | 14.91 | 273.44 | 6237 | 0.324 | 1658 | 6.06 | |||
| 60% | 18.28 | 18.61 | 340.07 | 6657 | 0.383 | 1954 | 5.75 | |||
| 65% | 18.20 | 23.12 | 420.93 | 7162 | 0.443 | 2249 | 5.34 | |||
| 70% | 18.15 | 27.05 | 490.94 | 7548 | 0.500 | 2524 | 5.14 | |||
| 75% | 18.06 | 31.85 | 575.15 | 7918 | 0.552 | 2768 | 4.81 | |||
| 80% | 17.96 | 37.82 | 679.25 | 8315 | 0.621 | 3045 | 4.48 | |||
| 90% | 17.74 | 51.47 | 912.96 | 8977 | 0.771 | 3539 | 3.88 | |||
| 100% | 17.62 | 58.90 | 1037.58 | 9211 | 0.845 | 3624 | 3.49 | |||
| APC14*7 | 40% | 18.46 | 7.55 | 139.36 | 4685 | 0.204 | 1076 | 7.72 | 72(AmbientTemperature:/) | |
| 45% | 18.42 | 9.99 | 183.99 | 5164 | 0.254 | 1332 | 7.24 | |||
| 50% | 18.37 | 12.95 | 237.94 | 5657 | 0.304 | 1583 | 6.65 | |||
| 55% | 18.31 | 16.51 | 302.23 | 6123 | 0.364 | 1881 | 6.22 | |||
| 60% | 18.24 | 20.52 | 374.31 | 6565 | 0.426 | 2185 | 5.84 | |||
| 65% | 18.16 | 25.43 | 461.78 | 7020 | 0.493 | 2526 | 5.47 | |||
| 70% | 18.08 | 30.14 | 544.91 | 7380 | 0.552 | 2817 | 5.17 | |||
| 75% | 17.99 | 35.37 | 636.40 | 7754 | 0.614 | 3101 | 4.87 | |||
| 80% | 17.88 | 42.17 | 754.01 | 8130 | 0.693 | 3457 | 4.58 | |||
| 90% | 17.66 | 55.71 | 984.06 | 8756 | 0.832 | 4072 | 4.14 | |||
| 100% | 17.55 | 62.58 | 1098.29 | 9014 | 0.892 | 4316 | 3.93 | |||
| Note: Motor temperature is motor surface temperature at 100% throttle running 3mins.(Date above based on benchtest are for reference only, comparion with that of other motor types is not recommended.) | ||||||||||
| AT3520Long ShaftKV850 | APC13*6.5 | 40% | 15.16 | 8.34 | 126.54 | 5001 | 0.170 | 953 | 7.53 | 43(AmbientTemperature:/) |
| 45% | 15.13 | 10.19 | 154.22 | 5364 | 0.198 | 1106 | 7.17 | |||
| 50% | 15.10 | 12.09 | 182.64 | 5735 | 0.229 | 1280 | 7.01 | |||
| 55% | 15.05 | 15.18 | 228.48 | 6168 | 0.267 | 1494 | 6.54 | |||
| 60% | 14.99 | 18.54 | 278.01 | 6583 | 0.312 | 1732 | 6.23 | |||
| 65% | 14.92 | 22.90 | 341.70 | 7073 | 0.361 | 2008 | 5.88 | |||
| 70% | 14.87 | 26.29 | 390.84 | 7402 | 0.397 | 2200 | 5.63 | |||
| 75% | 14.79 | 30.91 | 457.12 | 7816 | 0.446 | 2457 | 5.38 | |||
| 80% | 14.71 | 35.89 | 527.89 | 8189 | 0.492 | 2696 | 5.11 | |||
| 90% | 14.52 | 47.53 | 690.19 | 8938 | 0.591 | 3191 | 4.62 | |||
| 100% | 14.41 | 54.65 | 787.29 | 9187 | 0.654 | 3515 | 4.46 | |||
| APC14*7 | 40% | 15.15 | 8.87 | 134.38 | 4578 | 0.196 | 1021 | 7.60 | 61(AmbientTemperature:/) | |
| 45% | 15.12 | 11.11 | 167.90 | 4937 | 0.233 | 1214 | 7.23 | |||
| 50% | 15.06 | 14.47 | 217.85 | 5432 | 0.282 | 1468 | 6.74 | |||
| 55% | 14.99 | 18.96 | 284.08 | 5928 | 0.347 | 1785 | 6.28 | |||
| 60% | 14.92 | 23.03 | 343.56 | 6323 | 0.395 | 2033 | 5.92 | |||
| 65% | 14.83 | 28.29 | 419.61 | 6746 | 0.457 | 2323 | 5.54 | |||
| 70% | 14.75 | 33.09 | 488.18 | 7071 | 0.507 | 2570 | 5.26 | |||
| 75% | 14.65 | 39.24 | 574.99 | 7435 | 0.568 | 2852 | 4.96 | |||
| 80% | 14.56 | 45.23 | 658.44 | 7743 | 0.624 | 3111 | 4.73 | |||
| 90% | 14.34 | 58.48 | 838.83 | 8318 | 0.737 | 3607 | 4.30 | |||
| 100% | 14.22 | 66.32 | 942.71 | 8598 | 0.797 | 3854 | 4.09 | |||
| Note: Motor temperature is motor surface temperature at 100% throttle running 3mins.(Date above based on benchtest are for reference only, comparion with that of other motor types is not recommended.) | ||||||||||
Availability, price, package contents and hardware revision are confirmed on inquiry. This listing does not assert local stock, a delivery date or official distributor status. Confirm voltage, connectors, firmware and operating requirements before use.
These guides explain the setup, safety checks and accessory choices that usually matter for this product type.
A practical guide to motor KV, voltage, current, thrust, aircraft weight and flight style so the power system matches the model.
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Tags: T-Motor, T-MOTOR000794
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