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Cobra
C2808/22 Motor Propeller Data |
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Motor Wind |
Motor Kv |
No-Load Current |
Motor Resistance |
I Max |
P Max (3S) |
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22-Turn Delta |
1330 RPM/Volt |
Io = 0.82 Amps @ 10v |
Rm = 0.056 Ohms |
24 Amps |
260 W |
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Outside
Diameter |
Body Length |
Total Shaft Length |
Shaft Diameter |
Motor Weight |
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35.0 mm, 1.38 in. |
28.1 mm, 1.11 in. |
48.0 mm, 1.89 in. |
5.00 mm, 0.197 in. |
80.5 gm, 2.85 oz |
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Prop |
Prop |
Input |
Motor |
Watts |
Prop |
Pitch |
Thrust |
Thrust |
Thrust Eff. |
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Manf. |
Size |
Voltage |
Amps |
Input |
RPM |
Speed |
Grams |
Ounces |
Grams/W |
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APC |
7x4-E |
11.1 |
10.55 |
117.1 |
12,430 |
47.1 |
630 |
22.22 |
5.38 |
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APC |
7x5-E |
11.1 |
13.53 |
150.1 |
11,968 |
56.7 |
651 |
22.96 |
4.34 |
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APC |
7x6-E |
11.1 |
14.13 |
156.9 |
11,866 |
67.4 |
700 |
24.69 |
4.46 |
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APC |
8x4-E |
11.1 |
15.68 |
174.1 |
11,624 |
44.0 |
873 |
30.79 |
5.02 |
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APC |
8x6-E |
11.1 |
22.36 |
248.2 |
10,602 |
60.2 |
984 |
34.71 |
3.96 |
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APC |
8x8-E |
11.1 |
27.85 |
309.1 |
9,748 |
73.8 |
849 |
29.95 |
2.75 |
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APC |
9x4.5-E |
11.1 |
21.40 |
237.6 |
10,782 |
45.9 |
1184 |
41.76 |
4.98 |
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APC |
9x6-E |
11.1 |
24.02 |
266.6 |
10,332 |
58.7 |
1145 |
40.39 |
4.29 |
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Prop |
Prop |
Input |
Motor |
Watts |
Prop |
Pitch |
Thrust |
Thrust |
Thrust Eff. |
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Manf. |
Size |
Voltage |
Amps |
Input |
RPM |
Speed |
Grams |
Ounces |
Grams/W |
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APC |
6x4-E |
14.8 |
10.29 |
152.2 |
16,918 |
64.1 |
626 |
22.08 |
4.11 |
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APC |
6x5.5-E |
14.8 |
12.97 |
191.9 |
16,430 |
85.6 |
653 |
23.03 |
3.40 |
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APC |
7x4-E |
14.8 |
17.39 |
257.4 |
15,659 |
59.3 |
1055 |
37.21 |
4.10 |
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APC |
7x5-E |
14.8 |
21.65 |
320.4 |
14,926 |
70.7 |
1044 |
36.83 |
3.26 |
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APC |
7x6-E |
14.8 |
22.67 |
335.5 |
14,774 |
83.9 |
1117 |
39.40 |
3.33 |
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APC |
8x4-E |
14.8 |
25.03 |
370.4 |
14,339 |
54.3 |
1368 |
48.25 |
3.69 |
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Propeller Chart Color Code Explanation |
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The prop is to small to get good performance
from the motor. (Less than 50% power) |
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The prop is sized right to get good power
from the motor. (50 to 80% power) |
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The prop can be used, but full throttle
should be kept to short bursts. (80 to 100% power) |
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The prop is too big for the motor and should
not be used. (Over 100% power) |
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PLEASE
NOTE: |
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The
data contained in this prop chart is based on actual measurements taken in a
controlled test |
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environment. The test voltages used are based on a
properly sized Li-Po battery for the current |
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draw of the motor being
tested. If you are using a larger than
normal capacity battery, or a very |
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high C-Rated battery,
your actual voltages will be higher than those shown in this chart, and this |
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will result in higer
current draw for each prop used. You
should always test your power system |
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with a watt meter
whenever a prop is used to ensure that you are not exceeding the recommended |
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rating of the motor
being used. The prop recommendations
in this chart are based on the motor |
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receiving adequate
cooling throughout its operation. If
your motor is being used inside a cowl, you |
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must provide adequate
cooling to the motor and make sure that the motor is not getting too hot |
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during operation. |
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