| Cobra C2814/16 Motor Propeller Data | ||||||||||||||
| Motor Wind | Motor Kv | No-Load Current | Motor Resistance | I Max | P Max (3S) | |||||||||
| 16-Turn Delta | 1050 RPM/Volt | Io = 0.90 Amps @ 10v | Rm = 0.045 Ohms | 30 Amps | 330 W | |||||||||
| Outside Diameter | Body Length | Total Shaft Length | Shaft Diameter | Motor Weight | ||||||||||
| 35.0 mm, 1.38 in. | 34.1 mm, 1.34 in. | 54.0 mm, 2.13 in. | 5.00 mm, 0.197 in. | 109 gm, 3.84 oz | ||||||||||
| 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 | 11.1 | 9.76 | 108.4 | 10,165 | 38.5 | 645 | 22.75 | 5.95 | |||||
| APC | 8x6-E | 11.1 | 14.91 | 165.4 | 9,661 | 54.9 | 800 | 28.22 | 4.84 | |||||
| APC | 8x8-E | 11.1 | 19.92 | 221.1 | 9,176 | 69.5 | 738 | 26.03 | 3.34 | |||||
| APC | 9x4.5-E | 11.1 | 14.17 | 157.2 | 9,730 | 41.5 | 937 | 33.05 | 5.96 | |||||
| APC | 9x6-E | 11.1 | 16.46 | 182.7 | 9,511 | 54.0 | 963 | 33.97 | 5.27 | |||||
| APC | 9x7.5-E | 11.1 | 23.94 | 265.7 | 8,790 | 62.4 | 1008 | 35.56 | 3.79 | |||||
| APC | 9x9-E | 11.1 | 27.97 | 310.5 | 8,402 | 71.6 | 959 | 33.83 | 3.09 | |||||
| APC | 10x5-E | 11.1 | 19.88 | 220.7 | 9,176 | 43.4 | 1192 | 42.05 | 5.40 | |||||
| APC | 10x6-E | 11.1 | 21.64 | 240.2 | 9,011 | 51.2 | 1264 | 44.59 | 5.26 | |||||
| APC | 10x7-E | 11.1 | 24.67 | 273.9 | 8,710 | 57.7 | 1332 | 46.98 | 4.86 | |||||
| APC | 11x5.5-E | 11.1 | 26.51 | 294.2 | 8,533 | 44.4 | 1548 | 54.60 | 5.26 | |||||
| APC | 11x7-E | 11.1 | 30.37 | 337.1 | 8,144 | 54.0 | 1578 | 55.66 | 4.68 | |||||
| APC | 11x8-E | 11.1 | 32.18 | 357.2 | 7,965 | 60.3 | 1533 | 54.07 | 4.29 | |||||
| APC | 12x6-E | 11.1 | 32.51 | 360.8 | 7,890 | 44.8 | 1788 | 63.07 | 4.96 | |||||
| APC | 13x4-E | 11.1 | 27.03 | 300.0 | 8,487 | 32.1 | 1774 | 62.58 | 5.91 | |||||
| GWS | 8x4x3-DD | 11.1 | 9.43 | 104.7 | 10,198 | 38.6 | 654 | 23.07 | 6.25 | |||||
| GWS | 9x5-DD | 11.1 | 13.75 | 152.6 | 9,772 | 46.3 | 949 | 33.47 | 6.22 | |||||
| GWS | 9x5x3-DD | 11.1 | 17.68 | 196.2 | 9,387 | 44.4 | 1067 | 37.64 | 5.44 | |||||
| GWS | 10x6-DD | 11.1 | 18.65 | 207.0 | 9,294 | 52.8 | 1169 | 41.23 | 5.65 | |||||
| GWS | 10x6x3-DD | 11.1 | 23.78 | 264.0 | 8,794 | 50.0 | 1400 | 49.38 | 5.30 | |||||
| GWS | 11x7-DD | 11.1 | 27.38 | 303.9 | 8,436 | 55.9 | 1574 | 55.52 | 5.18 | |||||
| GWS | 12x6-HD | 11.1 | 29.86 | 331.4 | 8,174 | 46.4 | 1721 | 60.71 | 5.19 | |||||
| Prop | Prop | Input | Motor | Watts | Prop | Pitch | Thrust | Thrust | Thrust Eff. | |||||
| Manf. | Size | Voltage | Amps | Input | RPM | Speed | Grams | Ounces | Grams/W | |||||
| APC | 7x6-E | 14.8 | 14.68 | 217.3 | 13,189 | 74.9 | 877 | 30.93 | 4.04 | |||||
| APC | 8x4-E | 14.8 | 16.54 | 244.7 | 12,990 | 49.2 | 1117 | 39.40 | 4.56 | |||||
| APC | 8x6-E | 14.8 | 25.24 | 373.5 | 12,038 | 68.4 | 1278 | 45.08 | 3.42 | |||||
| APC | 8x8-E | 14.8 | 31.91 | 472.2 | 11,288 | 85.5 | 1134 | 40.00 | 2.40 | |||||
| APC | 9x4.5-E | 14.8 | 23.32 | 345.2 | 12,262 | 52.3 | 1567 | 55.27 | 4.54 | |||||
| APC | 9x6-E | 14.8 | 26.63 | 394.2 | 11,880 | 67.5 | 1506 | 53.12 | 3.82 | |||||
| APC | 10x5-E | 14.8 | 31.71 | 469.2 | 11,275 | 53.4 | 1850 | 65.26 | 3.94 | |||||
| Prop | Prop | Input | Motor | Watts | Prop | Pitch | Thrust | Thrust | Thrust Eff. | |||||
| Manf. | Size | Voltage | Amps | Input | RPM | Speed | Grams | Ounces | Grams/W | |||||
| APC | 6x5.5-E | 18.5 | 12.19 | 225.5 | 17,089 | 89.0 | 708 | 24.97 | 3.14 | |||||
| APC | 7x4-E | 18.5 | 16.35 | 302.4 | 16,395 | 62.1 | 1180 | 41.62 | 3.90 | |||||
| APC | 7x5-E | 18.5 | 20.95 | 387.5 | 15,886 | 75.2 | 1191 | 42.01 | 3.07 | |||||
| APC | 7x6-E | 18.5 | 22.16 | 409.9 | 15,739 | 89.4 | 1277 | 45.04 | 3.12 | |||||
| APC | 8x4-E | 18.5 | 25.22 | 466.6 | 15,410 | 58.4 | 1605 | 56.61 | 3.44 | |||||
| APC | 8x6-E | 18.5 | 37.84 | 699.9 | 13,975 | 79.4 | 1745 | 61.55 | 2.49 | |||||
| APC | 9x4.5-E | 18.5 | 34.02 | 629.3 | 14,401 | 61.4 | 2273 | 80.18 | 3.61 | |||||
| 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. | ||||||||||||||