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© 2026 Upwash LLC·Patent US 2026/0062150 A1·Engineering aid, not for safety-critical or certification use.

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Motors›T-Motor AT4125-540

T-Motor AT4125-540

The T-Motor AT4125-540 is a 540 kv motor with a 50 × 74 mm stator, weighing 355 g and rated to 85 A.

Simulate this motor

Specifications

Identity

BrandT-Motor
ModelT-Motor AT4125-540
kv540

Electrical

Max A85
Phase resistance14 mΩ
Poles14
Maker cells—
Curve pack5S

Mechanical

Weight0.78 lb
Stator50×74
Stator length74 mm

Limits

Max power—
MotorT-Motor AT4125-540This page
Propeller16x10E
BatteryGAONENG GNB LiHV 5S 19V 1100mAh 60C XT30 LiPo Battery LongRange
Throttle%
Charge%
Rotors
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Open in the calculator

Performance

Pairings
Download CSV
ThrottleRPMThrust (lb)Power (W)Current (A)Efficiency (%)g/W
30 %3,3481.08 lb61 W2.869.27.99
40 %4,3271.86 lb119 W5.676.27.11
50 %5,2322.79 lb200 W9.679.96.31
60 %6,0463.79 lb303 W14.981.85.66
70 %6,7584.79 lb422 W21.482.55.15
80 %7,3635.74 lb548 W28.982.64.76
90 %7,8636.60 lb673 W3782.24.45
100 %8,1167.06 lb746 W42.181.84.29

Related

Same maker

  • T-Motor AM480 KV600
  • T-Motor AM480 KV650
  • T-Motor AM480 KV900
  • T-Motor AM60 KV1550
  • T-Motor AM60 KV1880
  • T-Motor AM670 KV480

Paired with

  • 12x10W
  • 14x5N
  • 16x10E
  • 11x6-4
  • GAONENG GNB LiHV 5S 19V 1100mAh 60C XT30 LiPo Battery LongRange

Same class

  • AXI 4120/14 GOLD LINE V3 660kV
  • AXI 4120/14 V3 LONG 660kV
  • AXI 4120/18 GOLD LINE V3 515kV
  • AXI 4120/18 V3 LONG 515kV
  • AXI 4120/20 GOLD LINE V3 465kV
  • AXI 4120/20 V3 LONG 465kV
See all
Fast modelComputed 2026-10-03prom-rs/0.6.2Validation

The curves here are the Fast model, which every account and every visitor runs without limit. An account also runs the Full model, which solves a database propeller from its measured blade geometry.

Engineering aid — ThrustLab results are physics-based estimates, not certified data. Always bench-test and independently validate before committing a real build to flight. Not for safety-critical or certification use.