| Cobra C2203/46 Motor Propeller Data | ||||||||||||||
| Motor Wind | Motor Kv | No-Load Current | Motor Resistance | I Max | P Max (2S) | |||||||||
| 46-Turn Delta | 1720 RPM/Volt | Io = 0.40 Amps @ 8v | Rm = 0.179 Ohms | 8 Amps | 60 W | |||||||||
| Outside Diameter | Body Length | Total Shaft Length | Shaft Diameter | Motor Weight | ||||||||||
| 26.8 mm, 1.06 in. | 11.4mm, 0.45 in. | 19.6 mm, 0.77 in. | 3.0 mm, 0.118 in. | 17.5 gm, 0.62 oz | ||||||||||
| 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 | 7.4 | 6.63 | 49.1 | 8,760 | 33.2 | 310 | 10.93 | 6.32 | |||||
| APC | 7x5-SF | 7.4 | 7.50 | 55.5 | 8,250 | 39.1 | 306 | 10.79 | 5.51 | |||||
| APC | 7x6-SF | 7.4 | 8.60 | 63.6 | 7,540 | 42.8 | 286 | 10.09 | 4.49 | |||||
| APC | 8x3.8-SF | 7.4 | 8.83 | 65.3 | 7,280 | 26.2 | 374 | 13.19 | 5.72 | |||||
| GWS | 7x3.5-DD | 7.4 | 4.53 | 33.5 | 10,100 | 33.5 | 251 | 8.85 | 7.49 | |||||
| GWS | 8x4-DD | 7.4 | 7.21 | 53.4 | 8,350 | 31.6 | 361 | 12.73 | 6.77 | |||||
| GWS | 8x4.3-SF | 7.4 | 9.05 | 67.0 | 7,240 | 29.5 | 379 | 13.37 | 5.66 | |||||
| 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. | ||||||||||||||