BadAss BA-4520-370 Performance Test Data
Magnets Motor Wind Motor Kv No-Load Current Motor Resistance I Max P Max (6S)
14-Pole 18-Turn Delta 370 RPM/Volt Io = 1.33 Amps @ 10v Rm = 0.027 Ohms 65 Amps 1440 W 
 
Stator Outside Diameter Body Length Total Shaft Length Shaft Diameter Motor Weight
12-Slot 55.0 mm,  2.165 in. 52.3 mm,  2.059 in. 75.0 mm,  2.953 in. 8.00 mm,  0.315 in. 399 gm,   14.08 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 1.276 A 1.332 A 1.367 A 1.418 A 357 RPM/Volt @ 10V 0.0269 Ohms
 
5-cell Li-Po Test Data
Prop Prop Li-Po Input Motor Watts Prop Pitch Thrust  Thrust Thrust Eff.
Manf. Size Cells Voltage Amps Input RPM Speed Grams Ounces Grams/W
APC 16x10-E 5 18.5 31.09 575.1 5,716 54.1 3129 110.37 5.44
APC 16x12-E 5 18.5 38.93 720.2 5,543 63.0 2731 96.33 3.79
APC 17x8-E 5 18.5 30.95 572.6 5,720 43.3 3443 121.45 6.01
APC 17x10-E 5 18.5 37.67 696.8 5,565 52.7 3572 126.00 5.13
APC 17x12-E 5 18.5 43.07 796.7 5,459 62.0 3542 124.94 4.45
APC 18x8-E 5 18.5 33.24 615.0 5,658 42.9 3871 136.55 6.29
APC 18x10-E 5 18.5 38.92 719.9 5,543 52.5 4114 145.12 5.71
APC 18x12-E 5 18.5 56.19 1039.6 5,247 59.6 3939 138.94 3.79
APC 19x8-E 5 18.5 45.44 840.6 5,400 40.9 4657 164.27 5.54
APC 19x10-E 5 18.5 45.31 838.2 5,410 51.2 4720 166.49 5.63
APC 19x12-E 5 18.5 53.61 991.8 5,279 60.0 5043 177.89 5.08
APC 20x8-E 5 18.5 48.31 893.7 5,392 40.8 5222 184.20 5.84
APC 20x10-E 5 18.5 56.68 1048.5 5,225 49.5 5525 194.89 5.27
APC 20x11-E 5 18.5 60.03 1110.6 5,148 53.6 5479 193.27 4.93
APC 20x13-E 5 18.5 63.50 1174.7 5,061 62.3 5596 197.39 4.76
APC 20x15-E 5 18.5 78.93 1460.2 4,817 68.4 4974 175.45 3.41
BadAss 17x8-EW 5 18.5 28.82 533.2 5,769 43.7 3235 114.11 6.07
BadAss 17x10-EW 5 18.5 35.02 647.9 5,625 53.3 3528 124.45 5.45
BadAss 18x8-EW 5 18.5 32.82 607.2 5,675 43.0 3638 128.33 5.99
BadAss 18x10-EW 5 18.5 44.26 818.8 5,463 51.7 4294 151.47 5.24
BadAss 19x8-EW 5 18.5 40.45 748.3 5,534 41.9 4412 155.63 5.90
BadAss 19x10-EW 5 18.5 49.35 912.9 5,367 50.8 4834 170.51 5.30
BadAss 20x8-EW 5 18.5 46.93 868.3 5,394 40.9 4855 171.26 5.59
BadAss 20x10-EW 5 18.5 56.06 1037.0 5,229 49.5 5466 192.81 5.27
BadAss 20x12-EW 5 18.5 65.40 1209.9 5,039 57.3 5739 202.44 4.74
BadAss 21x8-EW 5 18.5 52.00 962.1 5,288 40.1 5415 191.01 5.63
BadAss 21x10-EW 5 18.5 65.56 1212.9 5,025 47.6 6016 212.21 4.96
MAS 16x8x3 5 18.5 29.26 541.3 5,759 43.6 3277 115.59 6.05
MAS 16x10x3 5 18.5 37.92 701.5 5,565 52.7 3884 137.00 5.54
 
6-cell Li-Po Test Data
Prop Prop Li-Po Input Motor Watts Prop Pitch Thrust  Thrust Thrust Eff.
Manf. Size Cells Voltage Amps Input RPM Speed Grams Ounces Grams/W
APC 14x10-E 6 22.2 22.65 502.9 7,051 66.8 2669 94.15 5.31
APC 14x12-E 6 22.2 36.24 804.4 6,795 77.2 2444 86.21 3.04
APC 15x8-E 6 22.2 24.59 545.8 7,040 53.3 3030 106.88 5.55
APC 15x10-E 6 22.2 37.16 825.0 6,783 64.2 3522 124.23 4.27
APC 16x7-E 6 22.2 31.05 689.3 6,888 45.7 3839 135.42 5.57
APC 16x8-E 6 22.2 41.05 911.2 6,718 50.9 4107 144.87 4.51
APC 16x10-E 6 22.2 46.02 1021.6 6,641 62.9 4211 148.54 4.12
APC 16x12-E 6 22.2 55.72 1236.9 6,406 72.8 3696 130.37 2.99
APC 17x7-E 6 22.2 33.74 749.1 6,839 45.3 4260 150.27 5.69
APC 17x8-E 6 22.2 44.42 986.2 6,636 50.3 4721 166.53 4.79
APC 17x10-E 6 22.2 54.30 1205.4 6,443 61.0 4872 171.85 4.04
APC 17x12-E 6 22.2 60.79 1349.5 6,295 71.5 4651 164.06 3.45
APC 18x8-E 6 22.2 46.66 1035.9 6,619 50.1 5394 190.27 5.21
APC 18x10-E 6 22.2 54.11 1201.2 6,450 61.1 5643 199.05 4.70
APC 19x8-E 6 22.2 64.86 1439.9 6,185 46.9 6256 220.67 4.34
APC 19x10-E 6 22.2 62.89 1396.0 6,236 59.1 6377 224.94 4.57
APC 20x8-E 6 22.2 66.80 1483.0 6,206 47.0 7029 247.94 4.74
BadAss 15x8-EW 6 22.2 25.08 556.7 7,000 53.0 3033 106.99 5.45
BadAss 15x10-EW 6 22.2 36.22 804.1 6,796 64.4 3123 110.16 3.88
BadAss 16x7-EW 6 22.2 29.92 664.2 6,916 45.8 3562 125.65 5.36
BadAss 16x8-EW 6 22.2 34.90 774.7 6,815 51.6 3775 133.16 4.87
BadAss 16x10-EW 6 22.2 39.35 873.6 6,750 63.9 4095 144.45 4.69
BadAss 17x6-EW 6 22.2 34.81 772.7 6,812 38.7 3959 139.65 5.12
BadAss 17x8-EW 6 22.2 40.03 888.6 6,720 50.9 4475 157.85 5.04
BadAss 17x10-EW 6 22.2 49.49 1098.6 6,550 62.0 4897 172.74 4.46
BadAss 18x8-EW 6 22.2 46.35 1028.9 6,621 50.2 5082 179.26 4.94
BadAss 18x10-EW 6 22.2 60.51 1343.4 6,289 59.6 5753 202.93 4.28
BadAss 19x8-EW 6 22.2 55.68 1236.2 6,400 48.5 6033 212.81 4.88
BadAss 19x10-EW 6 22.2 67.04 1488.3 6,163 58.4 6391 225.44 4.29
BadAss 20x8-EW 6 22.2 65.02 1443.4 6,205 47.0 6564 231.54 4.55
MAS 14x9x3 6 22.2 31.32 695.3 6,881 58.6 3569 125.89 5.13
MAS 15x7x3 6 22.2 33.37 740.9 6,841 45.3 3933 138.73 5.31
MAS 16x8x3 6 22.2 40.18 892.0 6,733 51.0 4546 160.36 5.10
MAS 16x10x3 6 22.2 52.06 1155.8 6,491 61.5 5355 188.89 4.63
 
8-cell Li-Po Test Data
Prop Prop Li-Po Input Motor Watts Prop Pitch Thrust  Thrust Thrust Eff.
Manf. Size Cells Voltage Amps Input RPM Speed Grams Ounces Grams/W
APC 14x6-E 8 29.6 26.99 798.9 9,427 53.6 3868 136.44 4.84
APC 14x7-E 8 29.6 41.89 1240.0 9,059 60.1 4401 155.24 3.55
APC 14x8.5-E 8 29.6 41.83 1238.3 9,063 73.0 4357 153.69 3.52
APC 14x10-E 8 29.6 42.22 1249.6 9,050 85.7 4287 151.22 3.43
APC 14x12-E 8 29.6 63.07 1867.0 8,584 97.5 3928 138.56 2.10
APC 15x4-E 8 29.6 29.81 882.4 9,322 35.3 4366 154.01 4.95
APC 15x6-E 8 29.6 42.11 1246.5 9,055 51.4 5144 181.45 4.13
APC 15x7-E 8 29.6 39.74 1176.2 9,112 60.4 5136 181.17 4.37
APC 15x8-E 8 29.6 45.02 1332.4 9,019 68.3 5077 179.09 3.81
APC 15x10-E 8 29.6 71.53 2117.1 8,453 80.0 5283 186.35 2.50
APC 16x7-E 8 29.6 56.70 1678.3 8,738 57.9 6520 229.99 3.88
APC 16x8-E 8 29.6 78.44 2321.7 8,311 63.0 6235 219.93 2.69
APC 17x7-E 8 29.6 58.70 1737.5 8,688 57.6 7172 252.98 4.13
APC 17x8-E 8 29.6 79.85 2363.6 8,126 61.6 6933 244.55 2.93
BadAss 14x6-EW 8 29.6 30.15 892.4 9,350 53.1 3774 133.12 4.23
BadAss 14x8-EW 8 29.6 36.42 1077.9 9,190 69.6 4378 154.43 4.06
BadAss 14x10-EW 8 29.6 51.38 1520.9 8,834 83.7 4385 154.68 2.88
BadAss 15x6-EW 8 29.6 39.43 1167.1 9,115 51.8 4889 172.45 4.19
BadAss 15x7-EW 8 29.6 39.72 1175.6 9,112 60.4 5110 180.25 4.35
BadAss 15x8-EW 8 29.6 46.04 1362.7 8,958 67.9 4550 160.50 3.34
BadAss 15x10-EW 8 29.6 61.50 1820.3 8,615 81.6 5005 176.55 2.75
BadAss 16x6-EW 8 29.6 46.00 1361.7 8,995 51.1 5835 205.82 4.29
BadAss 16x7-EW 8 29.6 52.40 1550.9 8,842 58.6 6055 213.58 3.90
BadAss 16x8-EW 8 29.6 61.04 1806.8 8,620 65.3 6125 216.05 3.39
BadAss 16x10-EW 8 29.6 71.14 2105.9 8,398 79.5 5947 209.77 2.82
BadAss 17x6-EW 8 29.6 63.70 1885.5 8,593 48.8 6650 234.57 3.53
BadAss 17x8-EW 8 29.6 69.07 2044.4 8,438 63.9 7436 262.30 3.64
MAS 13x8x3 8 29.6 35.91 1063.1 9,203 69.7 4436 156.48 4.17
MAS 14x7x3 8 29.6 43.14 1276.9 9,029 59.9 5329 187.97 4.17
MAS 14x9x3 8 29.6 52.53 1554.9 8,821 75.2 6001 211.68 3.86
MAS 15x7x3 8 29.6 56.07 1659.6 8,747 58.0 6551 231.08 3.95
MAS 16x8x3 8 29.6 66.19 1959.1 8,521 64.6 7449 262.76 3.80
                     
                     
© 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)
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.