| Cobra C3520/10 Motor Propeller Data | ||||||||||||||
| Motor Wind | Motor Kv | No-Load Current | Motor Resistance | I Max | P Max (4S) | |||||||||
| 10-Turn Delta | 980 RPM/Volt | Io = 1.84 Amps @ 14v | Rm = 0.025 Ohms | 60 Amps | 890 W | |||||||||
| Outside Diameter | Body Length | Total Shaft Length | Shaft Diameter | Motor Weight | ||||||||||
| 43.0 mm, 1.69 in. | 46.0 mm, 1.81 in. | 68.0 mm, 2.68 in. | 5.00 mm, 0.197 in. | 210 gm, 7.41 oz | ||||||||||
| Prop | Prop | Input | Motor | Watts | Prop | Pitch | Thrust | Thrust | Thrust Eff. | |||||
| Manf. | Size | Voltage | Amps | Input | RPM | Speed | Grams | Ounces | Grams/W | |||||
| APC | 10x7-E | 11.1 | 26.44 | 293.5 | 8,924 | 59.2 | 1344 | 47.41 | 4.58 | |||||
| APC | 10x10-E | 11.1 | 38.08 | 422.6 | 8,214 | 77.8 | 1170 | 41.27 | 2.77 | |||||
| APC | 11x5.5-E | 11.1 | 28.42 | 315.5 | 8,815 | 45.9 | 1698 | 59.89 | 5.38 | |||||
| APC | 11x7-E | 11.1 | 33.01 | 366.4 | 8,516 | 56.5 | 1767 | 62.33 | 4.82 | |||||
| APC | 11x8-E | 11.1 | 35.34 | 392.2 | 8,384 | 63.5 | 1736 | 61.23 | 4.43 | |||||
| APC | 11x8.5-E | 11.1 | 37.33 | 414.3 | 8,110 | 65.3 | 1695 | 59.79 | 4.09 | |||||
| APC | 12x6-E | 11.1 | 35.89 | 398.4 | 8,294 | 47.1 | 2042 | 72.03 | 5.13 | |||||
| APC | 12x8-E | 11.1 | 43.30 | 480.7 | 7,804 | 59.1 | 1781 | 62.82 | 3.71 | |||||
| APC | 12x10-E | 11.1 | 50.58 | 561.4 | 7,523 | 71.2 | 1900 | 67.02 | 3.38 | |||||
| APC | 12x12-E | 11.1 | 55.70 | 618.3 | 7,109 | 80.8 | 1655 | 58.38 | 2.68 | |||||
| APC | 13x4-E | 11.1 | 31.70 | 351.8 | 8,599 | 32.6 | 2080 | 73.37 | 5.91 | |||||
| APC | 13x6.5-E | 11.1 | 47.47 | 526.9 | 7,676 | 47.2 | 2438 | 86.00 | 4.63 | |||||
| APC | 13x8-E | 11.1 | 50.67 | 562.5 | 7,518 | 57.0 | 2371 | 83.63 | 4.22 | |||||
| APC | 13x10-E | 11.1 | 62.80 | 697.1 | 6,805 | 64.4 | 2044 | 72.10 | 2.93 | |||||
| APC | 14x7-E | 11.1 | 55.82 | 619.6 | 7,198 | 47.7 | 2707 | 95.49 | 4.37 | |||||
| APC | 14x8.5-E | 11.1 | 58.15 | 645.4 | 7,047 | 56.7 | 2733 | 96.40 | 4.23 | |||||
| APC | 14x10-E | 11.1 | 58.08 | 644.7 | 7,050 | 66.8 | 2696 | 95.10 | 4.18 | |||||
| APC | 15x4-E | 11.1 | 47.21 | 524.0 | 7,689 | 29.1 | 2833 | 99.93 | 5.41 | |||||
| APC | 15x6-E | 11.1 | 58.09 | 644.8 | 7,067 | 40.2 | 3019 | 106.49 | 4.68 | |||||
| APC | 15x8-E | 11.1 | 60.75 | 674.3 | 6,933 | 52.5 | 2954 | 104.20 | 4.38 | |||||
| MAS | 10x7x3 | 11.1 | 29.95 | 332.5 | 8,721 | 57.8 | 1633 | 57.60 | 4.91 | |||||
| MAS | 11x7x3 | 11.1 | 35.76 | 396.9 | 8,384 | 55.6 | 1923 | 67.83 | 4.84 | |||||
| MAS | 11x8x3 | 11.1 | 37.72 | 418.7 | 8,166 | 61.9 | 1928 | 68.01 | 4.60 | |||||
| MAS | 12x6x3 | 11.1 | 39.29 | 436.2 | 8,170 | 46.4 | 2138 | 75.41 | 4.90 | |||||
| MAS | 12x8x3 | 11.1 | 52.03 | 577.5 | 7,444 | 56.4 | 2521 | 88.92 | 4.37 | |||||
| MAS | 13x8x3 | 11.1 | 54.85 | 608.9 | 7,168 | 54.3 | 2625 | 92.59 | 4.31 | |||||
| MAS | 14x7x3 | 11.1 | 61.48 | 682.5 | 6,742 | 44.7 | 2911 | 102.68 | 4.27 | |||||
| Prop | Prop | Input | Motor | Watts | Prop | Pitch | Thrust | Thrust | Thrust Eff. | |||||
| Manf. | Size | Voltage | Amps | Input | RPM | Speed | Grams | Ounces | Grams/W | |||||
| APC | 9x6-E | 14.8 | 27.19 | 402.4 | 11,965 | 68.0 | 1554 | 54.82 | 3.86 | |||||
| APC | 9x7.5-E | 14.8 | 41.77 | 618.2 | 11,061 | 78.6 | 1618 | 57.07 | 2.62 | |||||
| APC | 9x9-E | 14.8 | 45.05 | 666.7 | 10,794 | 92.0 | 1611 | 56.83 | 2.42 | |||||
| APC | 10x5-E | 14.8 | 33.00 | 488.4 | 11,678 | 55.3 | 1960 | 69.14 | 4.01 | |||||
| APC | 10x6-E | 14.8 | 36.27 | 536.9 | 11,327 | 64.4 | 1984 | 69.98 | 3.70 | |||||
| APC | 10x7-E | 14.8 | 42.56 | 629.9 | 11,047 | 73.2 | 2085 | 73.55 | 3.31 | |||||
| APC | 10x10-E | 14.8 | 57.53 | 851.4 | 10,104 | 95.7 | 1789 | 63.10 | 2.10 | |||||
| APC | 11x5.5-E | 14.8 | 45.51 | 673.5 | 10,864 | 56.6 | 2697 | 95.13 | 4.00 | |||||
| APC | 11x7-E | 14.8 | 52.40 | 775.5 | 10,420 | 69.1 | 2741 | 96.68 | 3.53 | |||||
| APC | 11x8-E | 14.8 | 56.81 | 840.8 | 10,160 | 77.0 | 2538 | 89.52 | 3.02 | |||||
| APC | 11x8.5-E | 14.8 | 60.60 | 896.8 | 9,931 | 79.9 | 2529 | 89.21 | 2.82 | |||||
| APC | 12x6-E | 14.8 | 56.94 | 842.7 | 10,033 | 57.0 | 3146 | 110.97 | 3.73 | |||||
| APC | 13x4-E | 14.8 | 50.30 | 744.4 | 10,565 | 40.0 | 3309 | 116.72 | 4.45 | |||||
| MAS | 8x6x3 | 14.8 | 23.36 | 345.7 | 12,277 | 69.8 | 1428 | 50.37 | 4.13 | |||||
| MAS | 9x7x3 | 14.8 | 36.29 | 537.0 | 11,400 | 75.6 | 2047 | 72.21 | 3.81 | |||||
| MAS | 10x5x3 | 14.8 | 32.78 | 485.1 | 11,693 | 55.4 | 2132 | 75.20 | 4.39 | |||||
| MAS | 10x7x3 | 14.8 | 45.60 | 674.8 | 10,842 | 71.9 | 2560 | 90.30 | 3.79 | |||||
| MAS | 11x7x3 | 14.8 | 53.69 | 794.7 | 10,358 | 68.7 | 2947 | 103.95 | 3.71 | |||||
| MAS | 11x8x3 | 14.8 | 57.51 | 851.2 | 10,111 | 76.6 | 2984 | 105.26 | 3.51 | |||||
| MAS | 12x6x3 | 14.8 | 59.12 | 875.0 | 10,013 | 56.9 | 3309 | 116.72 | 3.78 | |||||
| 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 | 24.29 | 449.4 | 15,488 | 58.7 | 1591 | 56.12 | 3.54 | |||||
| APC | 8x6-E | 18.5 | 39.53 | 731.4 | 14,233 | 80.9 | 1789 | 63.10 | 2.45 | |||||
| APC | 8x8-E | 18.5 | 48.24 | 892.5 | 13,634 | 103.3 | 1622 | 57.21 | 1.82 | |||||
| APC | 9x4.5-E | 18.5 | 34.66 | 641.2 | 14,696 | 62.6 | 2378 | 83.88 | 3.71 | |||||
| APC | 9x6-E | 18.5 | 40.33 | 746.1 | 14,203 | 80.7 | 2197 | 77.50 | 2.94 | |||||
| APC | 9x7.5-E | 18.5 | 59.68 | 1104.1 | 12,974 | 92.1 | 2208 | 77.88 | 2.00 | |||||
| APC | 10x5-E | 18.5 | 47.73 | 882.9 | 13,678 | 64.8 | 2693 | 94.99 | 3.05 | |||||
| APC | 10x6-E | 18.5 | 52.65 | 974.0 | 13,436 | 76.3 | 2743 | 96.76 | 2.82 | |||||
| APC | 10x7-E | 18.5 | 60.41 | 1117.6 | 12,917 | 85.6 | 2851 | 100.57 | 2.55 | |||||
| MAS | 8x6x3 | 18.5 | 32.97 | 609.9 | 14,837 | 84.3 | 2097 | 73.97 | 3.44 | |||||
| MAS | 9x7x3 | 18.5 | 49.94 | 923.9 | 13,638 | 90.4 | 2968 | 104.69 | 3.21 | |||||
| MAS | 10x5x3 | 18.5 | 45.67 | 845.0 | 13,920 | 65.9 | 3086 | 108.85 | 3.65 | |||||
| MAS | 10x7x3 | 18.5 | 62.72 | 1160.2 | 12,748 | 84.5 | 3595 | 126.81 | 3.10 | |||||
| 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. | ||||||||||||||