Scorpion SII-3020-890 Motor Propeller Data
Motor Wind Motor Kv No-Load Current Motor Resistance I Max P Max (3S)
10-Turn Delta 890 RPM/Volt Io = 1.90 Amps @ 10v Rm = 0.020 Ohms 45 Amps 780 W
 
Outside Diameter Body Length Total Shaft Length Shaft Diameter Motor Weight
37.5 mm,  1.476in. 45.7 mm,  1.799 in. 74.5 mm,  2.933 in. 4.98 mm,  0.197 in. 166 gm,   5.81 oz
 
Prop Prop Input Motor Watts Prop Pitch Thrust  Thrust Thrust Eff.
Manf. Size Voltage Amps Input RPM Speed Grams Ounces Grams/W
APC 9x4.7-SF 11.1 13.23 146.8 9,189 40.9 900.4 31.76 6.13
APC 9x6-SF 11.1 26.94 299.1 8,435 47.9 1219.5 43.02 4.08
APC 9x7.5-SF 11.1 30.38 337.2 8,239 58.5 1175.6 41.47 3.49
APC 9x9-E 11.1 26.17 290.5 8,479 72.3 973.7 34.35 3.35
APC 10x3.8-SF 11.1 23.30 258.7 8,628 31.0 1430.8 50.47 5.53
APC 10x4.7-SF 11.1 24.63 273.4 8,559 38.1 1466.6 51.73 5.36
APC 10x6-E 11.1 19.75 219.2 8,816 50.1 1217.4 42.94 5.55
APC 10x7-E 11.1 23.17 257.2 8,636 57.2 1262.2 44.52 4.91
APC 10x7-SF 11.1 35.86 398.0 7,950 52.7 1623.4 57.26 4.08
APC 10x10-E 11.1 34.60 384.0 8,020 75.9 1126.1 39.72 2.93
APC 11x3.8-SF 11.1 26.47 293.8 8,460 30.4 1658.8 58.51 5.65
APC 11x4.7-SF 11.1 31.11 345.3 8,205 36.5 1845.6 65.10 5.34
APC 11x5.5-E 11.1 25.02 277.8 8,526 44.4 1575.8 55.58 5.67
APC 11x7-E 11.1 29.71 329.8 8,281 54.9 1671.1 58.95 5.07
APC 11x7-SF 11.1 42.83 475.4 7,532 49.9 2044.4 72.11 4.30
APC 11x8-E 11.1 31.87 353.8 8,154 61.8 1635.5 57.69 4.62
APC 11x8.5-E 11.1 34.85 386.8 8,012 64.5 1649.6 58.19 4.26
APC 11x10-E 11.1 39.91 443.0 7,702 72.9 1474.1 52.00 3.33
APC 12x3.8-SF 11.1 39.71 440.8 7,714 27.8 2232.9 78.76 5.07
APC 12x6-E 11.1 32.50 360.7 8,129 46.2 1952.9 68.89 5.41
APC 12x6-SF 11.1 49.39 548.3 7,098 40.3 2371.7 83.66 4.33
APC 12x8-E 11.1 40.05 444.6 7,703 58.4 1724.9 60.84 3.88
APC 12x10-E 11.1 45.76 507.9 7,342 69.5 1842.9 65.01 3.63
APC 12x12-E 11.1 51.31 569.6 7,001 46.4 1603.6 56.56 2.82
APC 13x4-E 11.1 28.42 315.5 8,353 31.6 1950.2 68.79 6.18
APC 13x6.5-E 11.1 42.78 474.9 7,523 46.3 2316.8 81.72 4.88
APC 13x8-E 11.1 45.91 509.6 7,328 55.5 2285.8 80.63 4.49
APC 15x4-E 11.1 42.72 474.2 7,530 28.5 2718.3 95.88 5.73
GEM 9x4.7-C 11.1 13.63 151.3 9,176 40.8 928.5 32.75 6.14
GEM 10x4.5 11.1 22.65 251.4 8,662 36.9 1397.9 49.31 5.56
GEM 10x4.5-C 11.1 20.51 227.7 8,383 35.7 1301.3 45.90 5.72
GEM 11x4.7-C 11.1 27.53 305.6 8,013 35.7 1708.8 60.28 5.59
GEM 12x4.5-C 11.1 32.41 359.7 7,743 33.0 1831.7 64.61 5.09
GWS 10x6-DD 11.1 16.58 184.0 8,997 51.1 1106.1 39.02 6.01
GWS 10x6x3-DD 11.1 22.03 244.5 8,693 49.4 1396.4 49.26 5.71
GWS 11x7-DD 11.1 25.85 286.9 8,490 56.3 1609.3 56.77 5.61
MAS 10x5x3 11.1 18.51 205.5 8,895 42.1 1216.1 42.90 5.92
MAS 10x7x3 11.1 26.91 298.7 8,435 55.9 1532.5 54.06 5.13
MAS 11x7x3 11.1 32.42 359.8 8,130 53.9 1833.8 64.68 5.10
MAS 11x8x3 11.1 34.90 387.4 8,002 60.6 1870 65.96 4.83
MAS 12x6x3 11.1 35.95 399.1 7,951 45.2 2065.1 72.84 5.17
MAS 12x8x3 11.1 47.30 525.0 7,261 55.0 2422.8 85.46 4.61
 
Prop Prop Input Motor Watts Prop Pitch Thrust  Thrust Thrust Eff.
Manf. Size Voltage Amps Input RPM Speed Grams Ounces Grams/W
APC 8x8-E 14.8 30.33 448.9 11,329 85.8 1142.3 40.29 2.54
APC 9x4.5-E 14.8 20.70 306.4 11,897 50.7 1491.8 52.62 4.87
APC 9x6-E 14.8 24.62 364.3 11,659 66.2 1473.3 51.97 4.04
APC 9x7.5-E 14.8 38.02 562.7 10,875 77.2 1576.3 55.60 2.80
APC 9x9-E 14.8 42.18 624.3 10,650 90.8 1580 55.73 2.53
APC 10x5-E 14.8 29.38 434.8 11,384 53.9 1875.5 66.16 4.31
APC 10x6-E 14.8 33.38 494.0 11,151 63.4 1924.7 67.89 3.90
APC 10x7-E 14.8 38.27 566.4 10,874 72.1 2014.2 71.05 3.56
APC 11x5.5-E 14.8 41.67 616.7 10,668 55.6 2585.9 91.21 4.19
APC 13x4-E 14.8 46.76 692.0 10,420 39.5 3218 113.51 4.65
 
Prop Prop Input Motor Watts Prop Pitch Thrust  Thrust Thrust Eff.
Manf. Size Voltage Amps Input RPM Speed Grams Ounces Grams/W
APC 8x4-E 18.5 21.30 394.1 14,915 84.7 1504.3 53.06 3.82
APC 8x6-E 18.5 35.89 663.9 14,024 79.7 1760 62.08 2.65
APC 8x8-E 18.5 45.21 836.3 13,468 102.0 1639.1 57.82 1.96
APC 9x4.5-E 18.5 31.12 575.6 14,314 61.0 2269.2 80.04 3.94
APC 9x6-E 18.5 37.08 686.0 13,955 79.3 2163.2 76.30 3.15
APC 9x7.5-E 18.5 56.21 1039.9 12,796 90.9 2208.4 77.90 2.12
APC 10x5-E 18.5 44.57 824.6 13,494 63.9 2658.9 93.79 3.22
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.  The test voltages used are based on a properly sized Li-Po battery for the current
draw of the motor being tested.  If you are using a larger than normal capacity battery, or a very
high C-Rated battery, your actual voltages will be higher than those shown in this chart, and this
will result in higer current draw for each prop used.  You should always test your power system
with a watt meter whenever a prop is used to ensure that you are not exceeding the recommended
rating of the motor being used.  The prop recommendations in this chart are based on the motor
receiving adequate cooling throughout its operation.  If your motor is being used inside a cowl, you
must provide adequate cooling to the motor and make sure that the motor is not getting too hot
during operation.