Tempest 2808-1360 Performance Test Data
Magnets Motor Wind Motor Kv No-Load Current Motor Resistance I Max P Max (4S)
14-Pole 22-Turn Delta 1360 RPM/Volt Io = 1.87 Amps @ 10v Rm = 0.064 Ohms 28 Amps 415 W
 
Stator Outside Diameter Body Length Total Shaft Length Shaft Diameter Motor Weight
12-Slot 35.4 mm,  1.394 in. 26.3 mm,  1.035 in. 48.8 mm,  1.921 in. 5.00 mm,  0.197 in. 77.6 gm,   2.74 oz
 
Test Data From Input 6.0 V 8.0 V 10.0V 12.0V Measured Kv value Measured Rm Value
Sample Motor Io Value 1.316 A 1.621 A 1.866 A 1.964 A 1387 RPM/Volt @ 10v 0.0638 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 8x6-E 2 7.4 12.64 93.6 8,130 46.2 526 18.55 5.62
APC 8x8-E 2 7.4 16.00 118.4 7,693 58.3 487 17.18 4.11
APC 9x4.5-E 2 7.4 12.78 94.5 8,108 34.6 629 22.19 6.65
APC 9x5-F 2 7.4 11.21 82.9 8,344 39.5 513 18.10 6.19
APC 9x6-E 2 7.4 14.86 109.9 7,855 44.6 638 22.50 5.80
APC 9x7.5-E 2 7.4 20.03 148.2 7,048 50.1 617 21.76 4.16
APC 9x9-E 2 7.4 23.34 172.7 6,538 55.7 541 19.08 3.13
APC 10x5-E 2 7.4 16.84 124.6 7,550 35.7 765 26.98 6.14
APC 10x6-E 2 7.4 18.54 137.2 7,285 41.4 795 28.04 5.80
APC 10x6-F 2 7.4 16.04 118.7 7,680 43.6 701 24.73 5.91
APC 10x7-E 2 7.4 20.54 152.0 6,964 46.2 793 27.97 5.22
APC 10x8-E 2 7.4 22.88 169.3 6,589 49.9 736 25.96 4.35
APC 10x10-E 2 7.4 22.94 169.7 6,600 62.5 743 26.21 4.38
APC 11x5.5-E 2 7.4 21.79 161.2 6,774 35.3 934 32.95 5.79
APC 11x7-E 2 7.4 24.22 179.2 6,354 42.1 928 32.73 5.18
APC 11x8-E 2 7.4 25.57 189.2 6,075 46.0 822 28.99 4.34
APC 11x8-F 2 7.4 23.25 172.0 6,499 49.2 885 31.22 5.14
APC 11x8.5-E 2 7.4 26.50 196.1 5,913 47.6 863 30.44 4.40
APC 11x10-E 2 7.4 29.45 217.9 5,322 50.4 641 22.61 2.94
APC 12x6-E 2 7.4 25.15 186.1 6,138 34.9 1026 36.19 5.51
APC 12x8-E 2 7.4 28.25 209.1 5,516 41.8 851 30.02 4.07
APC 12x8.5-F 2 7.4 26.35 195.0 5,912 47.6 981 34.60 5.03
APC 13x7-F 2 7.4 27.68 204.8 5,629 37.3 1071 37.78 5.23
BadAss 10x5-W 2 7.4 16.21 119.9 7,650 36.2 698 24.62 5.82
BadAss 10x6-W 2 7.4 19.68 145.6 7,075 40.2 695 24.51 4.77
BadAss 10x7-W 2 7.4 21.36 158.1 6,834 45.3 614 21.66 3.88
BadAss 10x8-W 2 7.4 23.01 170.3 6,574 49.8 645 22.75 3.79
BadAss 11x5-W 2 7.4 19.60 145.0 7,108 33.7 824 29.07 5.68
BadAss 11x6-W 2 7.4 22.09 163.4 6,735 38.3 883 31.15 5.40
BadAss 11x7-W 2 7.4 22.16 164.0 6,709 44.5 872 30.76 5.32
BadAss 11x8-W 2 7.4 25.76 190.6 6,011 45.5 699 24.66 3.67
BadAss 12x6-W 2 7.4 24.45 181.0 6,264 35.6 938 33.09 5.18
BadAss 12x7-W 2 7.4 26.96 199.5 5,766 38.2 957 33.76 4.80
BadAss 12x8-W 2 7.4 31.88 235.9 5,475 41.5 787 27.76 3.34
GemFan 7x6-F 2 7.4 10.77 79.7 8,404 47.8 273 9.63 3.43
GemFan 7.5x4-F 2 7.4 14.56 107.7 7,874 29.8 400 14.11 3.71
GemFan 8x5-F 2 7.4 9.91 73.3 8,533 40.4 449 15.84 6.12
GemFan 9x5-F 2 7.4 13.01 96.3 8,081 38.3 606 21.38 6.30
GemFan 10x6-F 2 7.4 17.48 129.4 7,466 42.4 776 27.37 6.00
GemFan 11x8-F 2 7.4 25.84 191.2 6,048 45.8 791 27.90 4.14
GemFan 12x8-F 2 7.4 28.06 207.6 5,560 42.1 879 31.01 4.23
MAS 8x6x3 2 7.4 13.76 101.8 7,987 45.4 506 17.85 4.97
MAS 9x7x3 2 7.4 19.56 144.8 7,123 47.2 702 24.76 4.85
MAS 10x5x3 2 7.4 18.00 133.2 7,371 34.9 789 27.83 5.92
MAS 10x7x3 2 7.4 23.16 171.4 6,533 43.3 865 30.51 5.05
MAS 11x7x3 2 7.4 25.71 190.3 6,027 40.0 938 33.09 4.93
MAS 11x8x3 2 7.4 26.83 198.5 5,781 43.8 931 32.84 4.69
 
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 7x4-E 3 11.1 12.52 138.9 12,760 48.3 677 23.88 4.87
APC 7x5-E 3 11.1 15.41 171.0 12,294 58.2 671 23.67 3.92
APC 7x6-E 3 11.1 16.11 178.9 12,180 69.2 733 25.86 4.10
APC 7x6-F 3 11.1 13.73 152.4 12,580 71.5 483 17.04 3.17
APC 7x7-E 3 11.1 19.27 213.9 11,745 77.9 717 25.29 3.35
APC 8x4-E 3 11.1 17.88 198.4 11,942 45.2 911 32.13 4.59
APC 8x4-F 3 11.1 13.70 152.0 12,588 47.7 682 24.06 4.49
APC 8x6-E 3 11.1 23.52 261.0 11,006 62.5 979 34.53 3.75
APC 8x8-E 3 11.1 27.68 307.2 10,203 77.3 882 31.11 2.87
APC 9x4.5-E 3 11.1 23.81 264.3 10,935 46.6 1198 42.26 4.53
APC 9x5-F 3 11.1 21.03 233.5 11,452 54.2 1030 36.33 4.41
APC 9x6-E 3 11.1 26.60 295.3 10,406 59.1 1144 40.35 3.87
APC 10x5-E 3 11.1 29.65 329.1 9,790 46.4 1335 47.09 4.06
APC 10x6-F 3 11.1 27.69 307.4 10,141 57.6 1254 44.23 4.08
BadAss 10x5-W 3 11.1 27.89 309.5 10,105 47.8 1237 43.63 4.00
BadAss 10x6-W 3 11.1 32.86 364.8 8,982 51.0 1083 38.20 2.97
GemFan 7x6-F 3 11.1 19.26 213.8 11,763 66.8 548 19.33 2.56
GemFan 7.5x4-F 3 11.1 25.46 282.7 10,603 40.2 733 25.86 2.59
GemFan 8x5-F 3 11.1 18.10 200.9 11,929 56.5 882 31.11 4.39
GemFan 9x5-F 3 11.1 23.15 257.0 11,044 52.3 1142 40.28 4.44
GemFan 10x6-F 3 11.1 31.06 344.7 10,047 57.1 1405 49.56 4.08
MAS 7x4x3 3 11.1 13.52 150.1 12,624 47.8 654 23.07 4.36
MAS 8x6x3 3 11.1 23.98 266.2 10,911 62.0 1072 37.81 4.03
MAS 9x7x3 3 11.1 33.90 376.3 9,583 63.5 1355 47.80 3.60
MAS 10x5x3 3 11.1 31.62 350.9 9,925 47.0 1453 51.25 4.14
 
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 6x3-F 4 14.8 10.29 152.2 17,777 50.5 480 16.93 3.15
APC 6x4-E 4 14.8 11.84 175.2 17,450 66.1 645 22.75 3.68
APC 6x4.3-E 4 14.8 16.50 244.2 16,636 67.7 858 30.26 3.51
APC 6x4.5-E 4 14.8 15.86 234.8 16,749 71.4 860 30.34 3.66
APC 6x5.5-E 4 14.8 14.59 215.9 16,981 88.4 675 23.81 3.13
APC 6x6-E 4 14.8 16.45 243.4 16,645 94.6 671 23.67 2.76
APC 6.5x5.0-P 4 14.8 15.73 232.7 16,775 79.4 708 24.97 3.04
APC 6.5x5.5-P 4 14.8 16.62 246.0 16,623 86.6 711 25.08 2.89
APC 6.5x6.0-P 4 14.8 18.95 280.4 16,215 92.1 677 23.88 2.41
APC 6.5x6.5-P 4 14.8 20.34 301.0 16,013 98.6 638 22.50 2.12
APC 7x4-E 4 14.8 20.62 305.1 15,981 60.5 1123 39.61 3.68
APC 7x4-F 4 14.8 15.37 227.5 16,869 63.9 699 24.66 3.07
APC 7x5-E 4 14.8 24.89 368.4 15,245 72.2 1068 37.67 2.90
APC 7x6-E 4 14.8 25.52 377.6 15,117 85.9 1160 40.92 3.07
APC 7x6-F 4 14.8 21.35 316.0 15,872 90.2 787 27.76 2.49
APC 7x7-E 4 14.8 29.55 437.4 14,279 94.7 1063 37.50 2.43
APC 8x4-E 4 14.8 27.98 414.1 14,586 55.3 1403 49.49 3.39
APC 8x4-F 4 14.8 21.58 319.4 15,829 60.0 1118 39.44 3.50
GemFan 7x6-F 4 14.8 27.88 412.6 14,601 83.0 865 30.51 2.10
GemFan 8x5-F 4 14.8 26.85 397.3 14,854 70.3 1360 47.97 3.42
MAS 6x4x3 4 14.8 13.43 198.8 17,215 65.2 749 26.42 3.77
MAS 7x4x3 4 14.8 20.80 307.8 15,976 60.5 1061 37.43 3.45
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
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.