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Cobra
C2808/16 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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16-Turn Delta |
1780 RPM/Volt |
Io = 1.35 Amps @ 10v |
Rm = 0.037 Ohms |
30 Amps |
330 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 |
6x4-E |
11.1 |
15.10 |
167.6 |
17,312 |
65.6 |
661 |
23.32 |
3.94 |
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APC |
6x5.5-E |
11.1 |
18.87 |
209.5 |
16,716 |
87.1 |
676 |
23.84 |
3.23 |
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APC |
7x4-E |
11.1 |
24.92 |
276.6 |
15,818 |
59.9 |
1077 |
37.99 |
3.89 |
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APC |
7x5-E |
11.1 |
30.67 |
340.4 |
14,952 |
70.8 |
1040 |
36.68 |
3.05 |
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APC |
7x6-E |
11.1 |
31.47 |
349.3 |
14,811 |
84.2 |
1103 |
38.91 |
3.16 |
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APC |
8x4-E |
11.1 |
34.92 |
387.6 |
14,273 |
54.1 |
1352 |
47.69 |
3.49 |
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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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