BadAss BA-2305-1440 Performance Test Data
Magnets Motor Wind Motor Kv No-Load Current Motor Resistance I Max P Max (4S)
14-Pole 38-Turn Delta 1440 RPM/Volt Io = 0.64 Amps @ 10v Rm = 0.152 Ohms 14 Amps 210 W
 
Stator Outside Diameter Body Length Total Shaft Length Shaft Diameter Motor Weight
12-Slot 29.1 mm,  1.146 in. 22.6 mm,  0.890 in. 41.0 mm,  1.614 in. 4.00 mm,  0.157 in. 40.2 gm,   1.41 oz
 
Test Data From Input 8.0 V 10.0 V 12.0V 14.0V Measured Kv value Measured Rm Value
Sample Motor Io Value 0.540 A 0.636 A 0.693 A 0.771 A 1452 RPM/Volt @ 10v 0.1522 Ohms
                     
2-cell Li-Po Test Data
Prop Prop Li-Po Input Motor Input Prop Pitch Speed Thrust  Thrust Thrust Eff.
Manf. Size Cells Voltage Amps Watts RPM in MPH Grams Ounces Grams/W
APC 7x4-E 2 7.4 6.03 44.6 8,944 33.9 306 10.80 6.86
APC 7x4-SF 2 7.4 6.15 45.5 8,905 33.7 303 10.68 6.66
APC 7x5-E 2 7.4 7.32 54.1 8,506 40.3 303 10.68 5.59
APC 7x5-SF 2 7.4 7.19 53.2 8,554 40.5 314 11.08 5.91
APC 7x6-E 2 7.4 7.92 58.6 8,310 47.2 315 11.11 5.38
APC 7x6-SF 2 7.4 8.39 62.1 8,145 46.3 304 10.71 4.89
APC 7x6-F 2 7.4 6.99 51.7 8,615 48.9 207 7.30 4.00
APC 7x7-E 2 7.4 9.31 68.9 7,810 51.8 295 10.42 4.29
APC 8x3.8-SF 2 7.4 9.03 66.8 7,894 28.4 422 14.87 6.31
APC 8x4-E 2 7.4 8.18 60.5 8,187 31.0 393 13.86 6.49
APC 8x4-F 2 7.4 6.81 50.4 8,686 32.9 298 10.51 5.91
APC 8x4.7-SF 2 7.4 9.77 72.3 7,608 33.9 438 15.45 6.06
APC 8x6-E 2 7.4 10.53 77.9 7,330 41.6 415 14.62 5.32
APC 8x6-SF 2 7.4 12.18 90.1 6,589 37.4 408 14.40 4.53
APC 8x8-E 2 7.4 13.05 96.6 6,230 47.2 314 11.06 3.25
APC 9x3.8-SF 2 7.4 10.95 81.0 7,118 25.6 478 16.87 5.90
APC 9x4.5-E 2 7.4 10.53 77.9 7,309 31.1 482 17.02 6.19
APC 9x4.7-SF 2 7.4 11.34 83.9 6,914 30.8 491 17.32 5.85
APC 9x5-F 2 7.4 9.83 72.7 7,571 35.8 416 14.68 5.72
APC 9x6-E 2 7.4 11.62 86.0 6,830 38.8 456 16.07 5.30
APC 9x7.5-E 2 7.4 14.80 109.5 5,833 41.4 397 13.99 3.62
APC 10x3.8-SF 2 7.4 13.52 100.0 5,803 20.9 513 18.10 5.13
APC 10x4.7-SF 2 7.4 15.36 113.7 5,688 25.3 559 19.72 4.92
APC 10x5-E 2 7.4 12.51 92.5 6,387 30.2 520 18.35 5.62
APC 10x6-E 2 7.4 13.40 99.2 5,964 33.9 507 17.87 5.11
APC 10x6-F 2 7.4 12.23 90.5 6,492 36.9 470 16.56 5.19
APC 10x7-E 2 7.4 15.03 111.2 5,780 38.3 467 16.47 4.20
MAS 7x4x3 2 7.4 7.14 52.8 8,567 32.5 259 9.15 4.91
MAS 8x6x3 2 7.4 11.46 84.8 6,975 39.6 378 13.32 4.45
 
3-cell Li-Po Test Data
Prop Prop Li-Po Input Motor Input Prop Pitch Speed Thrust  Thrust Thrust Eff.
Manf. Size Cells Voltage Amps Watts RPM in MPH Grams Ounces Grams/W
APC 5x4.3-E 3 11.1 6.37 70.7 13,925 56.7 305 10.75 4.31
APC 5x4.5-E 3 11.1 6.64 73.7 13,836 59.0 301 10.62 4.09
APC 5x4.6-E 3 11.1 6.63 73.6 13,835 60.3 324 11.43 4.40
APC 5x5-F 3 11.1 5.11 56.7 14,365 68.0 149 5.25 2.62
APC 6x3-F 3 11.1 6.22 69.0 13,956 52.9 292 10.31 4.24
APC 6x4-E 3 11.1 7.30 81.1 13,574 51.4 359 12.67 4.43
APC 6x4.3-E 3 11.1 9.64 107.0 12,699 51.7 481 16.97 4.50
APC 6x4.5-E 3 11.1 9.34 103.7 12,793 54.5 480 16.95 4.63
APC 6x5.5-E 3 11.1 9.39 104.2 12,785 66.6 344 12.14 3.30
APC 6x6-E 3 11.1 9.60 106.5 12,713 72.2 401 14.14 3.76
APC 7x4-E 3 11.1 11.06 122.7 12,126 45.9 582 20.53 4.74
APC 7x4-F 3 11.1 9.21 102.2 12,846 48.7 388 13.67 3.79
APC 7x4-SF 3 11.1 11.47 127.3 11,939 45.2 564 19.91 4.43
APC 7x5-E 3 11.1 12.98 144.0 11,263 53.3 547 19.28 3.80
APC 7x5-SF 3 11.1 12.81 142.2 11,322 53.6 559 19.73 3.93
APC 7x6-E 3 11.1 13.44 149.2 11,007 62.5 578 20.37 3.87
APC 7x6-SF 3 11.1 14.69 163.1 10,558 60.0 519 18.31 3.18
APC 7x7-E 3 11.1 15.43 171.2 10,475 69.4 554 19.54 3.24
APC 8x3.8-SF 3 11.1 16.16 179.4 10,325 37.2 746 26.31 4.16
APC 8x4-E 3 11.1 14.03 155.7 10,650 40.3 683 24.08 4.38
APC 8x4-F 3 11.1 12.08 134.1 11,611 44.0 565 19.94 4.22
APC 9x5-F 3 11.1 17.00 188.7 9,800 46.4 752 26.54 3.99
MAS 5x3x3 3 11.1 5.98 66.4 14,053 39.9 169 5.95 2.54
MAS 6x4x3 3 11.1 9.10 101.0 12,820 48.6 350 12.33 3.46
MAS 7x4x3 3 11.1 12.22 135.7 11,586 43.9 530 18.70 3.91
 
4-cell Li-Po Test Data
Prop Prop Li-Po Input Motor Input Prop Pitch Speed Thrust  Thrust Thrust Eff.
Manf. Size Cells Voltage Amps Watts RPM in MPH Grams Ounces Grams/W
APC 4x4.5-E 4 14.8 5.76 85.2 19,260 82.1 272 9.59 3.19
APC 4.5x4.1-E 4 14.8 5.76 85.2 19,266 74.8 282 9.94 3.31
APC 4.7x4.25-E 4 14.8 6.98 103.3 18,783 75.6 302 10.63 2.92
APC 4.75x4.75-E 4 14.8 7.79 115.2 18,476 83.1 294 10.37 2.55
APC 4.75x5.5-E 4 14.8 8.82 130.5 18,075 94.1 274 9.66 2.10
APC 5x4.3-E 4 14.8 9.91 146.6 17,624 71.8 501 17.68 3.42
APC 5x4.5-E 4 14.8 10.17 150.6 17,531 74.7 495 17.47 3.29
APC 5x4.6-E 4 14.8 10.28 152.2 17,469 76.1 522 18.41 3.43
APC 5x5-E 4 14.8 9.07 134.2 17,972 85.1 310 10.92 2.31
APC 5x5-F 4 14.8 8.01 118.5 18,364 87.0 251 8.85 2.12
APC 5.25x4.75-E 4 14.8 10.01 148.2 17,606 79.2 427 15.05 2.88
APC 5.25x6.25-E 4 14.8 12.73 188.4 16,395 97.0 380 13.41 2.02
APC 5.5x4.5-E 4 14.8 10.30 152.4 17,485 74.5 446 15.73 2.93
APC 6x3-F 4 14.8 9.85 145.8 17,614 83.4 476 16.80 3.27
APC 6x4-E 4 14.8 11.38 168.5 16,999 64.4 583 20.57 3.46
APC 6x4.3-E 4 14.8 14.41 213.3 15,509 63.2 731 25.77 3.43
APC 6x4.5-E 4 14.8 14.02 207.5 15,682 66.8 738 26.02 3.56
APC 6x5.5-E 4 14.8 14.04 207.8 15,743 82.0 530 18.69 2.55
APC 6x6-E 4 14.8 14.42 213.4 15,547 88.3 599 21.12 2.81
APC 7x4-E 4 14.8 16.92 250.4 14,813 56.1 892 31.45 3.56
APC 7x4-F 4 14.8 14.05 208.0 16,050 60.8 616 21.74 2.96
MAS 5x3x3 4 14.8 9.27 137.2 17,865 50.8 276 9.75 2.01
MAS 6x4x3 4 14.8 14.11 208.8 16,297 61.7 572 20.16 2.74
Propeller Chart Color Code Explanation
   The prop is to small to get good performance from the motor. (Less than 50% power)
   The prop is sized right to get good power from the motor. (50 to 80% power)
   The prop can be used, but full throttle should be kept to short bursts. (80 to 100% power)
   The prop is too big for the motor and should not be used. (Over 100% power)
PLEASE NOTE:
The Data contained in this Prop Chart is based on actual measurements, taken in a controlled test environment, at an altitude of
584 feet above sea level.  The test voltages used are based on the standard output of a Li-Po battery under load, which is 3.70 volts
per cell.  If you are using a battery that is larger in capacity than normal, or has a very high C-rating, then your actual voltages will
be higher than those shown in the chart, and this will result in a higher current and power value for every prop used.  You should
always test your actual power system with a watt meter before flying your model to make sure that you are not exceeding the 
recommended current and power ratings of the motor being used.  The prop recommendations in this chart assume that the motor
receives adequate cooling throughout its operation.  If your motor is being used inside a cowl or fuselage, you must ensure that
the motor receives sufficient airflow, and does not get too hot during operation.  It is always best to use a prop size that pulls no
more than 80% of the motors maximum recommended current value to ensure safe operation under all conditions.