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Cobra
C2808/26 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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26-Turn Delta |
1130 RPM/Volt |
Io = 0.75 Amps @ 10v |
Rm = 0.075 Ohms |
22 Amps |
240 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 |
8x4-E |
11.1 |
10.14 |
112.5 |
10,196 |
38.6 |
665 |
23.46 |
5.91 |
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APC |
8x6-E |
11.1 |
14.62 |
162.3 |
9,482 |
53.9 |
763 |
26.91 |
4.70 |
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APC |
8x8-E |
11.1 |
18.79 |
208.6 |
8,824 |
66.8 |
680 |
23.99 |
3.26 |
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APC |
9x4.5-E |
11.1 |
13.92 |
154.5 |
9,591 |
40.9 |
906 |
31.96 |
5.87 |
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APC |
9x6-E |
11.1 |
15.96 |
177.1 |
9,264 |
52.6 |
901 |
31.78 |
5.09 |
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APC |
9x7.5-E |
11.1 |
21.71 |
241.0 |
8,285 |
58.8 |
876 |
30.90 |
3.63 |
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APC |
10x5-E |
11.1 |
18.74 |
208.0 |
8,807 |
41.7 |
1097 |
38.70 |
5.28 |
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APC |
10x6-E |
11.1 |
20.14 |
223.6 |
8,566 |
48.7 |
1128 |
39.79 |
5.05 |
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APC |
10x7-E |
11.1 |
22.34 |
247.9 |
8,145 |
54.0 |
1148 |
40.49 |
4.63 |
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APC |
11x5.5-E |
11.1 |
23.63 |
262.3 |
7,909 |
41.2 |
1317 |
46.46 |
5.02 |
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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 |
14.8 |
10.91 |
161.5 |
13,762 |
52.1 |
783 |
27.62 |
4.85 |
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APC |
7x5-E |
14.8 |
13.95 |
206.4 |
13,216 |
62.6 |
799 |
28.18 |
3.87 |
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APC |
7x6-E |
14.8 |
14.62 |
216.4 |
13,085 |
74.3 |
868 |
30.62 |
4.01 |
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APC |
8x4-E |
14.8 |
16.22 |
240.0 |
12,806 |
48.5 |
1074 |
37.88 |
4.48 |
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APC |
8x6-E |
14.8 |
23.09 |
341.8 |
11,562 |
65.7 |
1162 |
40.99 |
3.40 |
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APC |
9x4.5-E |
14.8 |
21.87 |
323.7 |
11,770 |
50.2 |
1433 |
50.55 |
4.43 |
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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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