Product overview
The T-MOTOR AT3520 Long Shaft is a brushless propulsion motor for outdoor fixed-wing UAV aircraft of 1.8-2.0KG, offered in KV550, KV720 and KV850 versions. Its construction combines lateral cooling vents, curved magnets and a three-bearing layout. All three versions measure Φ43*65mm and have 100mm enameled lead wire, a 12N14P configuration and shaft diameters of IN: 5mm and OUT: 5mm. Weight including cable is 218g for KV550, 219g for KV720 and 221g for KV850.
The supplied package contains one AT3520 motor and one hardware pack. Recommended accompanying components are the T13*6.5 propeller and AT 115A ESC. LiPo ratings differ by version: 4-6S for KV550, 4-5S for KV720 and 3-4S for KV850. At 10V, their respective idle currents are 1.1A, 1.6A and 2.0A. Peak current is rated for 180 seconds at 50A, 70A and 70A respectively. Maximum power also carries a 180-second qualification: 1100W for KV550, 1300W for KV720 and 1100W for KV850.
Specifications
| Specification | Value & conditions |
|---|---|
| Manufacturer and model | T-MOTOR AT3520 Long Shaft Fixed Wing UAV Motor |
| Motor variants | Long Shaft KV550 / KV720 / KV850 |
| Intended aircraft | Outdoor fixed-wing UAV aircraft of 1.8-2.0KG |
| Motor architecture | Brushless DC motor |
| Cooling and bearing construction | Lateral cooling vents, curved magnets and a three-bearing layout |
| Supplied configuration | 1× T-MOTOR AT3520 motor and 1× hardware pack |
| Recommended propulsion components | T13*6.5 propeller and AT 115A ESC |
| Packaging weight | 341g |
| Packaging dimensions | 145*95*65mm |
| Motor weight | 218gLong Shaft KV550; including cable. |
| Motor weight | 219gLong Shaft KV720; including cable. |
| Motor weight | 221gLong Shaft KV850; including cable. |
| Motor dimensions | Φ43*65mm |
| Lead wire | 100mm enameled wire |
| Motor configuration | 12N14P |
| Shaft diameter | IN: 5mm; OUT: 5mm |
| Internal resistance | 31mΩLong Shaft KV550. |
| Internal resistance | 20mΩLong Shaft KV720. |
| Internal resistance | 14mΩLong Shaft KV850. |
| Rated voltage | 4-6SLong Shaft KV550; LiPo battery. |
| Rated voltage | 4-5SLong Shaft KV720; LiPo battery. |
| Rated voltage | 3-4SLong Shaft KV850; LiPo battery. |
| Idle current | 1.1ALong Shaft KV550; 10V. |
| Idle current | 1.6ALong Shaft KV720; 10V. |
| Idle current | 2.0ALong Shaft KV850; 10V. |
| Peak current | 50ALong Shaft KV550; 180s. |
| Peak current | 70ALong Shaft KV720 or Long Shaft KV850; 180s. |
| Maximum power | 1100WLong Shaft KV550 or Long Shaft KV850; 180S. |
| Maximum power | 1300WLong Shaft KV720; 180S. |
| Specification-table recommendation | / |
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