|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Cobra
C2203/52 Motor Propeller Data |
|
|
Motor Wind |
Motor Kv |
No-Load Current |
Motor Resistance |
I Max |
P Max (2S) |
|
|
52-Turn Delta |
1540 RPM/Volt |
Io = 0.36 Amps @ 8v |
Rm = 0.238 Ohms |
7 Amps |
55 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 |
4.95 |
36.6 |
8,070 |
30.6 |
258 |
9.10 |
7.04 |
|
|
|
|
|
APC |
7x5-SF |
7.4 |
5.60 |
41.4 |
7,620 |
36.1 |
259 |
9.14 |
6.25 |
|
|
|
|
|
APC |
7x6-SF |
7.4 |
6.51 |
48.2 |
7,040 |
40.0 |
244 |
8.61 |
5.06 |
|
|
|
|
|
APC |
8x3.8-SF |
7.4 |
6.73 |
49.8 |
6,830 |
24.6 |
324 |
11.43 |
6.51 |
|
|
|
|
|
GWS |
7x3.5-DD |
7.4 |
3.36 |
24.9 |
9,180 |
30.4 |
205 |
7.23 |
8.24 |
|
|
|
|
|
GWS |
8x4-DD |
7.4 |
5.45 |
40.3 |
7,700 |
29.2 |
305 |
10.76 |
7.56 |
|
|
GWS |
8x4.3-SF |
7.4 |
6.93 |
51.3 |
6,740 |
27.4 |
328 |
11.57 |
6.40 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|