BadAss BA-2820-1820 Performance Test Data
Magnets Motor Wind Motor Kv No-Load Current Motor Resistance I Max P Max (6S)
14-Pole 6-Turn Delta 1820 RPM/Volt Io = 4.21 Amps @ 10v Rm = 0.011 Ohms 100 Amps 2220 W
 
Stator Outside Diameter Body Length Total Shaft Length Shaft Diameter Motor Weight
12-Slot 35.6 mm, 1.402 in. 40.0 mm, 1.575 in. 61.5 mm, 2.421 in. 5.00 mm, 0.197 in. 148 gm, 5.22 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 3.720 A 4.208 A 4.649 A 5.150 A 1754 RPM/Volt @ 10V 0.0109 Ohms
                     
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 7x6-E 3 11.1 49.13 545.3 17,369 98.7 1548 54.59 2.84
APC 7x6-SP 3 11.1 41.80 464.0 17,825 101.3 1375 48.52 2.96
APC 7x7-E 3 11.1 59.57 661.2 16,714 110.8 1509 53.22 2.28
APC 7x9-SP 3 11.1 62.41 692.8 16,544 141.0 1184 41.77 1.71
APC 8x4-E 3 11.1 56.63 628.6 16,924 64.1 1928 68.00 3.07
APC 8x6-E 3 11.1 77.39 859.1 15,704 89.2 2146 75.69 2.50
APC 8x8-E 3 11.1 90.43 1003.8 14,795 112.1 1955 68.96 1.95
APC 9x4.5-E 3 11.1 77.37 858.8 15,678 66.8 2709 95.55 3.15
APC 9x6-E 3 11.1 88.51 982.4 14,956 85.0 2479 87.44 2.52
APC 10x5-E 3 11.1 100.02 1110.3 14,137 66.9 2900 102.30 2.61
BadAss 10x5-W 3 11.1 90.65 1006.2 14,807 70.1 2698 95.16 2.68
MAS 7x4x3 3 11.1 39.05 433.4 18,038 68.3 1395 49.21 3.22
MAS 8x6x3 3 11.1 73.46 815.4 15,925 90.5 2435 85.89 2.99
 
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 6.5x5.0-P 4 14.8 47.64 705.1 23,836 112.9 1478 52.15 2.10
APC 6.5x5.5-P 4 14.8 50.60 748.8 23,671 123.3 1502 52.97 2.01
APC 6.5x6.0-P 4 14.8 56.67 838.7 23,314 132.5 1506 53.11 1.80
APC 6.5x6.5-P 4 14.8 59.18 875.9 23,145 142.5 1477 52.10 1.69
APC 6.5x7.0-P 4 14.8 66.02 977.1 22,639 150.1 1348 47.53 1.38
APC 6.5x7.5-P 4 14.8 68.69 1016.7 22,454 159.5 1303 45.98 1.28
APC 7x4-SP 4 14.8 53.96 798.5 23,439 88.8 2062 72.73 2.58
APC 7x5-E 4 14.8 80.83 1196.3 21,643 102.5 2218 78.24 1.85
APC 7x5-SP 4 14.8 62.58 926.1 22,888 108.4 2034 71.75 2.20
APC 7x6-E 4 14.8 83.70 1238.7 21,357 121.3 2349 82.86 1.90
APC 7x6-SP 4 14.8 69.38 1026.9 22,369 127.1 2144 75.62 2.09
APC 7x7-E 4 14.8 95.52 1413.6 20,504 135.9 2237 78.90 1.58
APC 7x9-SP 4 14.8 96.75 1431.9 20,417 174.0 1775 62.62 1.24
MAS 6x4x3 4 14.8 38.51 569.9 24,433 92.5 1540 54.32 2.70
MAS 7x4x3 4 14.8 63.53 940.2 22,863 86.6 2142 75.55 2.28
 
5-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 6.5x5.0-P 5 18.5 70.06 1296.1 28,458 134.7 2086 73.58 1.61
APC 6.5x5.5-P 5 18.5 74.03 1369.5 28,149 146.6 2106 74.30 1.54
APC 6.5x6.0-P 5 18.5 82.12 1519.2 27,531 156.4 1999 70.50 1.32
APC 6.5x6.5-P 5 18.5 85.50 1581.7 27,265 167.8 1885 66.49 1.19
APC 6.5x7.0-P 5 18.5 92.38 1709.0 26,744 177.3 1861 65.63 1.09
APC 6.5x7.5-P 5 18.5 95.50 1766.7 26,493 188.2 1803 63.61 1.02
APC 7x4-SP 5 18.5 79.25 1466.1 27,725 105.0 2843 100.27 1.94
APC 7x5-SP 5 18.5 90.72 1678.4 26,864 127.2 2834 99.97 1.69
APC 7x6-SP 5 18.5 100.52 1859.5 26,089 148.2 2843 100.27 1.53
MAS 6x4x3 4 14.8 57.41 849.6 29,422 111.4 2048 72.24 2.41
MAS 7x4x3 4 14.8 90.85 1344.6 26,897 101.9 2806 98.99 2.09
 
6-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 6.5x5.0-P 6 22.2 96.80 2149.0 32,763 155.1 2566 90.51 1.19
APC 6.5x5.5-P 6 22.2 102.79 2282.0 32,321 168.3 2570 90.65 1.13
APC 6.5x6.0-P 6 22.2 107.42 2384.8 31,711 180.2 2497 88.09 1.05
2021 Innov8tive Designs, Inc.
This chart, and the data contained within it, are the property of Innov8tive Designs, Inc., and may not be reproduced without permission from the author.
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)
Notes about Propellers used in the Motor Tests
APC Props with -E on the part number are from the APC Thin Electric Series. Example: APC 10x6-E
APC Props with -F on the part number are from the APC Folding Electric Series. Example: APC 11x8-F
APC Props with -SF on the part number are from the APC Slow-Fly Electric Series. Example: APC 10x4.7-SF
APC Props with -P on the part number are from the APC Pylon Racing Series. Example: APC 6.5x5.5-P
APC Props with -SP on the part number are from the APC Sport Glow Series. Example: APC 7x6-SP
BadAss Props with -W on the part number are from the BadAss Electric Wood Series. Example: BadAss 11x6-W
GemFan Props with -F on the part number are from the GemFan Folding Electric Series. Example: GemFan 10x6-F
MAS Props are Master Airscrew 3-Blade Propellers. Example: MAS 10x5x3
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.