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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›Neumotor 4619/7.5/251

Neumotor 4619/7.5/251

The Neumotor 4619/7.5/251 is a 251 kv motor with a 46 × 19 mm stator, weighing 272 g and rated to 72 A.

Simulate this motor

Specifications

Identity

BrandNeumotor
Model4619/7.5/251
kv251

Electrical

Max A72
Phase resistance74 mΩ
Poles22
Maker cells—
Curve pack9S

Mechanical

Weight0.60 lb
Stator46×19
Stator length19 mm

Limits

Max power—
Motor4619/7.5/251This page
Propeller18x5.5MR
BatteryTP3300-9SE55
Throttle%
Charge%
Rotors
Free · no account needed

Open in the calculator

Performance

Pairings
Download CSV
ThrottleRPMThrust (lb)Power (W)Current (A)Efficiency (%)g/W
30 %2,7490.70 lb35 W0.966.99.09
40 %3,6011.25 lb69 W1.874.48.15
50 %4,4381.95 lb122 W3.378.67.24
60 %5,2562.79 lb197 W5.3816.44
70 %6,0503.76 lb296 W7.982.25.76
80 %6,8144.84 lb423 W11.482.75.19
90 %7,5446.01 lb578 W15.782.64.71
100 %7,9676.75 lb685 W18.782.44.46

Related

Same maker

  • 3207/1.5Y/293
  • 3805/100/94
  • 3805/10/939
  • 3805/11/854
  • 3805/12/783
  • 3805/13/722

Paired with

  • 12.5x10
  • 15x12
  • 18x5.5MR
  • 20x15C
  • TP3300-9SE55

Same class

  • 4606/0.5/11917
  • 4606/100/60
  • 4606/10/596
  • 4606/11/542
  • 4606/12/497
  • 4606/13/458
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.