| Cobra C2204/58 Motor Propeller Data | ||||||||||||||
| Motor Wind | Motor Kv | No-Load Current | Motor Resistance | I Max | P Max (3S) | |||||||||
| 58-Turn Delta | 1080 RPM/Volt | Io = 0.20 Amps @ 8v | Rm = 0.318 Ohms | 7 Amps | 75 W | |||||||||
| Outside Diameter | Body Length | Total Shaft Length | Shaft Diameter | Motor Weight | ||||||||||
| 27.0 mm, 1.06 in. | 14.2mm, 0.56 in. | 21.8 mm, 0.86 in. | 3.0 mm, 0.118 in. | 22.5 gm, 0.79 oz | ||||||||||
| Prop | Prop | Input | Motor | Watts | Prop | Pitch | Thrust | Thrust | Thrust Eff. | |||||
| Manf. | Size | Voltage | Amps | Input | RPM | Speed | Grams | Ounces | Grams/W | |||||
| APC | 8x3.8-SF | 7.4 | 3.38 | 25.0 | 5,924 | 21.3 | 233 | 8.22 | 9.33 | |||||
| APC | 8x6-SF | 7.4 | 4.88 | 36.1 | 5,097 | 29.0 | 250 | 8.82 | 6.92 | |||||
| APC | 9x3.8-SF | 7.4 | 4.29 | 31.7 | 5,412 | 19.5 | 281 | 9.91 | 8.86 | |||||
| APC | 9x4.7-SF | 7.4 | 4.71 | 34.8 | 5,194 | 23.1 | 294 | 10.37 | 8.44 | |||||
| APC | 9x6-SF | 7.4 | 6.02 | 44.6 | 4,421 | 25.1 | 295 | 10.41 | 6.62 | |||||
| APC | 9x7.5-SF | 7.4 | 6.62 | 49.0 | 4,010 | 28.5 | 260 | 9.17 | 5.31 | |||||
| APC | 10x3.8-SF | 7.4 | 5.64 | 41.8 | 4,566 | 16.4 | 325 | 11.46 | 7.78 | |||||
| APC | 10x4.7-SF | 7.4 | 6.02 | 44.6 | 4,356 | 19.4 | 333 | 11.75 | 7.47 | |||||
| GWS | 8x4-DD | 7.4 | 2.65 | 19.6 | 6,314 | 23.9 | 202 | 7.13 | 10.31 | |||||
| GWS | 8x4x3-DD | 7.4 | 3.15 | 23.3 | 6,036 | 22.9 | 220 | 7.76 | 9.44 | |||||
| GWS | 8x4.3-SF | 7.4 | 3.56 | 26.3 | 5,812 | 23.7 | 228 | 8.04 | 8.66 | |||||
| GWS | 9x4.7-SF | 7.4 | 4.94 | 36.5 | 5,015 | 22.3 | 298 | 10.51 | 8.15 | |||||
| GWS | 9x5-DD | 7.4 | 4.20 | 31.0 | 5,463 | 25.9 | 280 | 9.88 | 9.02 | |||||
| GWS | 9x5x3-DD | 7.4 | 4.90 | 36.3 | 5,033 | 23.8 | 292 | 10.30 | 8.05 | |||||
| GWS | 10x4.7-SF | 7.4 | 6.30 | 46.6 | 4,229 | 18.8 | 340 | 11.99 | 7.30 | |||||
| GWS | 10x6-DD | 7.4 | 5.25 | 38.8 | 4,871 | 27.7 | 323 | 11.39 | 8.32 | |||||
| GWS | 10x6x3-DD | 7.4 | 6.14 | 45.4 | 4,292 | 24.4 | 330 | 11.64 | 7.27 | |||||
| Prop | Prop | Input | Motor | Watts | Prop | Pitch | Thrust | Thrust | Thrust Eff. | |||||
| Manf. | Size | Voltage | Amps | Input | RPM | Speed | Grams | Ounces | Grams/W | |||||
| APC | 7x4-SF | 11.1 | 4.23 | 47.0 | 8,929 | 33.8 | 324 | 11.43 | 6.90 | |||||
| APC | 7x5-SF | 11.1 | 4.85 | 53.8 | 8,531 | 40.4 | 326 | 11.50 | 6.06 | |||||
| APC | 7x6-SF | 11.1 | 5.75 | 63.9 | 7,951 | 45.2 | 315 | 11.11 | 4.93 | |||||
| APC | 8x3.8-SF | 11.1 | 6.08 | 67.4 | 7,735 | 27.8 | 427 | 15.06 | 6.33 | |||||
| GWS | 7x3.5x3-DD | 11.1 | 3.33 | 36.9 | 9,528 | 31.6 | 269 | 9.49 | 7.28 | |||||
| GWS | 8x4-DD | 11.1 | 4.71 | 52.3 | 8,638 | 32.7 | 383 | 13.51 | 7.32 | |||||
| GWS | 8x4x3-DD | 11.1 | 5.49 | 60.9 | 8,138 | 30.8 | 404 | 14.25 | 6.63 | |||||
| GWS | 8x4.3-SF | 11.1 | 6.01 | 66.7 | 7,804 | 31.8 | 416 | 14.67 | 6.24 | |||||
| GWS | 9x5-DD | 11.1 | 6.97 | 77.3 | 7,141 | 33.8 | 493 | 17.39 | 6.38 | |||||
| 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. | ||||||||||||||