T-Motor F40 PRO IV 2306.5

Stator2306.5
KV options1950, 2400
Weight30.8 g
Shaft4mm
Max cells4-6S
Configuration12N14P
Dimensions27.9x29.8 mm
Mount4-M3
Winding resistance65 (1950KV) / 45 (2400KV) mOhm
Max thrust1902.32 g

At 30.8 g it is 1.9 g lighter than average across the 21 2306-class motors in our database (avg 32.7 g).

Best props for the F40 PRO IV 2306.5

5in tri-blade (T-Motor T5146/T5147/T5150, the props T-Motor bench-tested this motor with)

Thrust data (T-Motor bench test)

KVPropBatteryThrottleCurrentRPMThrustEfficiency
1950 T-Motor T5146 Tri-Blade 6S 50 7.47 A 18862 642.34 g 3.56 g/W
1950 T-Motor T5146 Tri-Blade 6S 55 9.48 A 20210 749.86 g 3.28 g/W
1950 T-Motor T5146 Tri-Blade 6S 60 11.67 A 21604 866.36 g 3.08 g/W
1950 T-Motor T5146 Tri-Blade 6S 65 14.38 A 23089 990.68 g 2.87 g/W
1950 T-Motor T5146 Tri-Blade 6S 70 17.31 A 24296 1100.91 g 2.65 g/W
1950 T-Motor T5146 Tri-Blade 6S 75 19.87 A 25349 1181.98 g 2.49 g/W
1950 T-Motor T5146 Tri-Blade 6S 80 22.97 A 26221 1284.96 g 2.34 g/W
1950 T-Motor T5146 Tri-Blade 6S 85 26.09 A 27150 1380.92 g 2.22 g/W
1950 T-Motor T5146 Tri-Blade 6S 90 29.32 A 27950 1476.19 g 2.12 g/W
1950 T-Motor T5146 Tri-Blade 6S 95 32.56 A 28781 1511.67 g 1.96 g/W
1950 T-Motor T5146 Tri-Blade 6S 100 40.48 A 31359 1767.92 g 1.85 g/W
1950 T-Motor T5147 Tri-Blade 6S 50 7.82 A 18547 644.95 g 3.42 g/W
1950 T-Motor T5147 Tri-Blade 6S 55 10.0 A 19916 754.38 g 3.13 g/W
1950 T-Motor T5147 Tri-Blade 6S 60 12.52 A 21413 877.19 g 2.91 g/W
1950 T-Motor T5147 Tri-Blade 6S 65 15.13 A 22665 994.88 g 2.74 g/W
1950 T-Motor T5147 Tri-Blade 6S 70 18.14 A 23849 1111.05 g 2.56 g/W
1950 T-Motor T5147 Tri-Blade 6S 75 20.92 A 24883 1204.06 g 2.41 g/W
1950 T-Motor T5147 Tri-Blade 6S 80 23.95 A 25728 1291.79 g 2.26 g/W
1950 T-Motor T5147 Tri-Blade 6S 85 26.95 A 26591 1384.57 g 2.16 g/W
1950 T-Motor T5147 Tri-Blade 6S 90 30.11 A 27371 1476.69 g 2.07 g/W
1950 T-Motor T5147 Tri-Blade 6S 95 33.66 A 28125 1560.69 g 1.96 g/W
1950 T-Motor T5147 Tri-Blade 6S 100 43.01 A 30782 1856.72 g 1.84 g/W
1950 T-Motor T5150 Tri-Blade 6S 50 7.78 A 18696 661.52 g 3.52 g/W
1950 T-Motor T5150 Tri-Blade 6S 55 10.0 A 19843 773.86 g 3.21 g/W
1950 T-Motor T5150 Tri-Blade 6S 60 12.54 A 21576 894.71 g 2.97 g/W
1950 T-Motor T5150 Tri-Blade 6S 65 14.96 A 22838 994.4 g 2.77 g/W
1950 T-Motor T5150 Tri-Blade 6S 70 17.74 A 24091 1101.26 g 2.59 g/W
1950 T-Motor T5150 Tri-Blade 6S 75 20.85 A 25057 1209.21 g 2.43 g/W
1950 T-Motor T5150 Tri-Blade 6S 80 23.86 A 25894 1297.18 g 2.28 g/W
1950 T-Motor T5150 Tri-Blade 6S 85 26.97 A 26733 1397.89 g 2.18 g/W
1950 T-Motor T5150 Tri-Blade 6S 90 30.2 A 27498 1489.89 g 2.08 g/W
1950 T-Motor T5150 Tri-Blade 6S 95 33.35 A 28037 1558.41 g 1.97 g/W
1950 T-Motor T5150 Tri-Blade 6S 100 43.03 A 30869 1902.32 g 1.88 g/W
2400 T-Motor T5146 Tri-Blade 4S 50 8.39 A 17057 512.08 g 3.79 g/W
2400 T-Motor T5146 Tri-Blade 4S 55 10.4 A 18274 591.18 g 3.54 g/W
2400 T-Motor T5146 Tri-Blade 4S 60 12.76 A 19485 663.68 g 3.24 g/W
2400 T-Motor T5146 Tri-Blade 4S 65 15.39 A 20675 762.3 g 3.1 g/W
2400 T-Motor T5146 Tri-Blade 4S 70 18.22 A 21792 852.57 g 2.94 g/W
2400 T-Motor T5146 Tri-Blade 4S 75 21.42 A 22565 943.62 g 2.77 g/W
2400 T-Motor T5146 Tri-Blade 4S 80 24.74 A 23702 1030.63 g 2.63 g/W
2400 T-Motor T5146 Tri-Blade 4S 85 27.77 A 24506 1093.43 g 2.5 g/W
2400 T-Motor T5146 Tri-Blade 4S 90 30.67 A 25239 1158.04 g 2.4 g/W
2400 T-Motor T5146 Tri-Blade 4S 95 34.24 A 26095 1230.5 g 2.29 g/W
2400 T-Motor T5146 Tri-Blade 4S 100 41.36 A 27649 1424.39 g 2.21 g/W
2400 T-Motor T5147 Tri-Blade 4S 50 8.65 A 16737 510.01 g 3.66 g/W
2400 T-Motor T5147 Tri-Blade 4S 55 10.91 A 18006 594.75 g 3.39 g/W
2400 T-Motor T5147 Tri-Blade 4S 60 13.29 A 19125 674.62 g 3.17 g/W
2400 T-Motor T5147 Tri-Blade 4S 65 15.93 A 20240 755.99 g 2.97 g/W
2400 T-Motor T5147 Tri-Blade 4S 70 18.95 A 21395 849.54 g 2.81 g/W
2400 T-Motor T5147 Tri-Blade 4S 75 21.92 A 22342 932.24 g 2.68 g/W
2400 T-Motor T5147 Tri-Blade 4S 80 25.27 A 23313 1009.97 g 2.53 g/W
2400 T-Motor T5147 Tri-Blade 4S 85 28.78 A 24096 1089.77 g 2.4 g/W
2400 T-Motor T5147 Tri-Blade 4S 90 32.09 A 24739 1162.54 g 2.31 g/W
2400 T-Motor T5147 Tri-Blade 4S 95 35.62 A 25467 1246.35 g 2.24 g/W
2400 T-Motor T5147 Tri-Blade 4S 100 42.95 A 25704 1435.42 g 2.15 g/W
2400 T-Motor T5150 Tri-Blade 4S 50 8.52 A 16635 514.3 g 3.75 g/W
2400 T-Motor T5150 Tri-Blade 4S 55 10.75 A 17854 597.06 g 3.46 g/W
2400 T-Motor T5150 Tri-Blade 4S 60 13.3 A 19146 688.88 g 3.23 g/W
2400 T-Motor T5150 Tri-Blade 4S 65 16.01 A 20321 774.62 g 3.03 g/W
2400 T-Motor T5150 Tri-Blade 4S 70 18.88 A 21395 864.35 g 2.87 g/W
2400 T-Motor T5150 Tri-Blade 4S 75 21.96 A 21854 951.82 g 2.73 g/W
2400 T-Motor T5150 Tri-Blade 4S 80 25.32 A 23353 1031.82 g 2.58 g/W
2400 T-Motor T5150 Tri-Blade 4S 85 28.8 A 24092 1110.9 g 2.45 g/W
2400 T-Motor T5150 Tri-Blade 4S 90 32.08 A 24754 1182.48 g 2.35 g/W
2400 T-Motor T5150 Tri-Blade 4S 95 35.48 A 25129 1256.16 g 2.26 g/W
2400 T-Motor T5150 Tri-Blade 4S 100 42.91 A 27272 1448.38 g 2.17 g/W

Manufacturer bench figures (T-Motor bench (2017 rig), 11 throttle points (50-100% in 5% steps) per KV on three 5in tri-blades; 1950 KV on 6S, 2400 KV on 4S; 30 degC ambient); real-world thrust varies with ESC, battery sag and prop condition.

F40 PRO IV 2306.5 vs other 2306 motors on 6S

The same thrust costs different power on different motors. Each line is one maker's own bench series (6S, its own prop), drawn as grams of thrust per watt against thrust, so a higher line makes that thrust for less battery current. Throttle percent is left out on purpose: it means something different on every maker's rig.

0123402505007501000125015001750 thrust, g g/W
MotorKVPropPeak thrust At 825 gAt 1650 g
T-Motor F40 PRO IV 2306.5 1950 T-Motor T5150 Tri-Blade 1902 g at 1012 W 267 W (3.09 g/W) 850 W (1.94 g/W)
T-Motor Pacer V2 P2306 1950 T-Motor T5147 Tri-Blade 1701 g at 950 W 289 W (2.86 g/W) 870 W (1.9 g/W)
T-Motor VELOX V2 2306 1950 T-Motor T5150 1656 g at 850 W 307 W (2.68 g/W) 847 W (1.95 g/W)
T-Motor Velox V2 V2306.5 1950 T-Motor T5146 1700 g at 902 W 234 W (3.53 g/W) 834 W (1.98 g/W)
Axisflying AE V2 2306.5 1960 51466 1760 g at 1042 W 322 W (2.57 g/W) 880 W (1.87 g/W)
EMAX E3 Series 2306 1900 EMAX AVAN 5026-3 1760 g at 978 W 290 W (2.84 g/W) 881 W (1.87 g/W)

Power at 825 g and 1650 g is read off each maker's curve, straight-line between its two nearest bench points; 1650 g is the highest thrust every motor here reached. Different props and rigs move these curves as much as the motor does, so compare rows on a similar prop. Peak thrust of every 2306 motor: 2306 motors compared. How to read a bench table: reading motor bench tables.

Thrust-to-weight with this motor

Four T-Motor F40 PRO IV 2306.5 motors at 1902.32 g max thrust each give 7609.28 g: 2:1, the minimum to fly, up to 3804.64 g all-up; 4:1 (freestyle) up to 1902.32 g; 8:1 (racing) up to 951.16 g.

RPM & prop speed on this motor

Props in this motor's class

PropSizeBladesWeight
HQProp ETHIX S3 5x3.1x3 5.0x3.1 3 3.6 g
HQProp ETHIX S4 5x3.7x3 5.0x3.7 3 3.6 g
HQProp ETHIX S5 5x4x3 5.0x4.0 3 3.7 g
HQProp V2S Freestyle 5x4.3x3 5.0x4.3 3 3.8 g
HQProp 5x4.3x3 V1S 5x4.3 3 3.81 g

Where this data comes from

Specs and bench data come from T-Motor's own product page. 1950 KV: 30.8 g with cable, 65 mOhm, 4-6S, 1012 W / 42 A peak (60 s). 2400 KV: 30.6 g, 45 mOhm, 4S rated, 666 W / 42.9 A peak. Body 27.9x29.8 mm, 12N14P, 4 mm shaft, 20#AWG 150 mm leads, 4-M3 mount. Not sold by our retail source, so this entry is maintained by hand. Motor surface temperature after 1 min at full throttle: 94-96 degC (1950 KV) and 88-90 degC (2400 KV) at 30 degC ambient

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