T-HOBBY AM480 Review: A Lightweight Motor Built for 48–52" 3D Airplanes
If you are building a 48–52" 3D airplane, the motor is not simply about maximum wattage. What matters more is how quickly the motor builds torque, how much thrust it can produce at low speed, and whether the motor adds unnecessary weight to the airframe.
The T-HOBBY AM480 is designed around exactly that requirement.
Its large-diameter, short-height motor structure uses a roughly 3:1 diameter-to-height ratio, giving the motor a torque-focused character rather than simply chasing high RPM. The hollow shaft and ribbed motor bell also help keep the motor around 145g while improving cooling and structural strength.
Application Scenario
Designed for 48–52" 3D RC Airplanes
The T-HOBBY AM480 is designed primarily for 48–52" outdoor 3D and aerobatic RC airplanes.
It is a good match for aircraft where low-speed control, rapid throttle response and strong vertical performance are more important than pure top speed.
Recommended applications:
48–52" 3D aerobatic airplanes
Freestyle RC airplanes
3D training and sport aerobatic models
Hover / Harrier / Torque Roll focused aircraft
Lightweight fixed-wing builds requiring high thrust-to-weight performance
Battery & KV Selection
The AM480 is available in 600KV, 650KV and 900KV versions. The right KV depends on the aircraft weight, battery voltage and the type of 3D flying you want to prioritize.
| AM480 Version | Recommended Battery | Typical Aircraft Weight | Best For |
|---|
| 600KV | 5–6S LiPo | 1.6–2.1 kg | Torque-focused 3D |
| 650KV | 5–6S LiPo | 1.6–2.1 kg | Balanced high-power 3D |
| 900KV | 3–4S LiPo | 1.2–1.6 kg | Lightweight 3D / aerobatic builds |
For most 48–52" 3D builds, the 650KV version is the most versatile starting point when using a 5–6S battery. The 900KV version makes more sense for lighter aircraft and lower-voltage 3–4S setups.
Propeller Compatibility
The AM480 supports several propeller sizes depending on the selected KV and battery setup. T-MOTOR lists 12×6, 13×6.5 and 14×7 among the recommended propeller sizes.
The AM480 power combo is supplied with T13×6.5 propellers, making this a useful starting point for a 650KV 5–6S 3D setup.
Always match the propeller to the selected KV, battery voltage and ESC current capability rather than choosing a propeller based on size alone.
Published Bench Test Data
Published test data gives a clearer picture of how the different KV versions behave under load. The following results were recorded using different battery and propeller combinations, so they should be treated as reference data rather than a direct apples-to-apples comparison.
| Test Setup | AM480 650KV | AM480 900KV |
|---|
| Battery | 5–6S class | 3–4S |
| Test Prop | T13×6.5 | APC 12×6 |
| Full-Throttle Power | 1,133W | 651W |
| Full-Throttle Current | 54.5A | 48.2A |
| Full-Throttle Thrust | 4,203g | 2,779g |
| Full-Throttle Efficiency | 3.71 g/W | 4.27 g/W |
| Motor Temperature* | 87°C | 76°C |
* Published test condition: motor case temperature after 3 minutes at 100% throttle. Test results can vary depending on battery, propeller, ESC, cooling and aircraft setup.
What the Test Data Means
The 650KV version is clearly the more power-focused option in the published tests, producing 4.2 kg of static thrust at 1,133W with a T13×6.5 propeller. This gives a 48–52" 3D aircraft plenty of vertical power for aggressive aerobatic maneuvers.
The 900KV version uses a lower-voltage setup and produces less absolute thrust, but its published full-throttle efficiency is higher at 4.27 g/W. That makes it more suitable for lighter builds where a lower overall power requirement is preferred.
For 3D pilots, the important point is not simply the peak thrust number. The AM480 combines a relatively light motor with a torque-oriented design and strong power output, which helps maintain responsive control during hover, Harrier, Torque Roll and other low-speed maneuvers.
Recommended Power System
For a straightforward 48–52" 3D build, pair the AM480 with the AM66A ESC and T13×6.5 propeller.
This combination is offered as an AM480 3D power system and provides a practical starting point for a high-power 5–6S setup.
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