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Cobra
CM-2205-2300 Champion Motor Propeller Data |
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Magnets |
Motor Wind |
Motor Kv |
No-Load Current |
Motor Resistance |
I Max |
P Max (4S) |
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14-Pole |
28-Turn Delta |
2300 RPM/Volt |
Io = 1.13 Amps @ 10v |
Rm = 0.056 Ohms |
22 Amps |
325 W |
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Stator |
Outside Diameter |
Body Length |
Total Shaft Length |
Shaft Diameter |
Motor Weight |
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12-Slot |
27.9 mm, 1.098 in. |
16.1 mm, 0.634 in. |
33.6 mm, 1.323 in. |
3.00 mm, 0.118 in. |
29.8 gm, 1.05 oz |
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Test
Data From |
Input |
6.0 V |
8.0 V |
10.0V |
12.0V |
Measured Kv value |
Measured Rm Value |
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Sample
Motor |
Io Value |
0.874 A |
0.995 A |
1.131 A |
1.268 A |
2284 RPM/Volt @ 10v |
0.0564 Ohms |
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Prop |
Prop |
Li-Po |
Input |
Motor |
Input |
Prop |
Pitch Speed |
Thrust |
Thrust |
Thrust Eff. |
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Manf. |
Size |
Cells |
Voltage |
Amps |
Watts |
RPM |
in MPH |
Grams |
Ounces |
Grams/W |
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APC |
4x3.3-FPV |
3 |
11.1 |
9.27 |
102.9 |
22,993 |
71.9 |
353.9 |
12.48 |
3.44 |
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APC |
4x4.5-FPV |
3 |
11.1 |
12.44 |
138.1 |
22,178 |
94.5 |
381.2 |
13.45 |
2.76 |
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APC |
4x4x3-FPV |
3 |
11.1 |
12.83 |
142.4 |
21,984 |
83.3 |
464.4 |
16.38 |
3.26 |
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APC |
5x4x3-FPV |
3 |
11.1 |
23.73 |
263.4 |
19,155 |
72.6 |
803.1 |
28.33 |
3.05 |
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APC |
5x4.3-FPV |
3 |
11.1 |
21.01 |
233.2 |
20,007 |
81.5 |
695.1 |
24.52 |
2.98 |
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APC |
5x4.5-FPV |
3 |
11.1 |
21.56 |
239.3 |
19,858 |
84.6 |
675.8 |
23.84 |
2.82 |
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APC |
5x4.6-FPV |
3 |
11.1 |
21.92 |
243.3 |
19,740 |
86.0 |
718.4 |
25.34 |
2.95 |
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HQ |
4x4 |
3 |
11.1 |
9.75 |
108.2 |
22,863 |
86.6 |
372.1 |
13.13 |
3.44 |
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HQ |
4x4x3 |
3 |
11.1 |
12.26 |
136.1 |
22,139 |
83.9 |
457.9 |
16.15 |
3.36 |
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HQ |
4x4.5 |
3 |
11.1 |
6.54 |
72.6 |
23,741 |
101.2 |
253.5 |
8.94 |
3.49 |
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HQ |
4x4.5-BN |
3 |
11.1 |
13.08 |
145.2 |
21,922 |
93.4 |
453.2 |
15.99 |
3.12 |
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HQ |
5x3 |
3 |
11.1 |
8.41 |
93.3 |
23,105 |
65.6 |
419.7 |
14.80 |
4.50 |
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HQ |
5x4 |
3 |
11.1 |
12.52 |
139.0 |
22,155 |
83.9 |
559.7 |
19.74 |
4.03 |
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HQ |
5x4x3 |
3 |
11.1 |
17.16 |
190.5 |
20,917 |
79.2 |
694.6 |
24.50 |
3.65 |
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HQ |
5x4.5 |
3 |
11.1 |
13.34 |
148.0 |
21,862 |
93.2 |
563.6 |
19.88 |
3.81 |
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HQ |
5x4.5-BN |
3 |
11.1 |
20.79 |
230.8 |
19,940 |
85.0 |
732.4 |
25.83 |
3.17 |
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HQ |
6x3 |
3 |
11.1 |
12.76 |
141.6 |
22,015 |
62.5 |
627.2 |
22.12 |
4.43 |
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Prop |
Prop |
Li-Po |
Input |
Motor |
Input |
Prop |
Pitch Speed |
Thrust |
Thrust |
Thrust Eff. |
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Manf. |
Size |
Cells |
Voltage |
Amps |
Watts |
RPM |
in MPH |
Grams |
Ounces |
Grams/W |
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APC |
4x3.3-FPV |
4 |
14.8 |
15.13 |
223.9 |
29,415 |
91.9 |
591.8 |
20.87 |
2.64 |
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APC |
4x4.5-FPV |
4 |
14.8 |
20.46 |
302.8 |
27,931 |
119.0 |
623.9 |
22.01 |
2.06 |
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APC |
4x4x3-FPV |
4 |
14.8 |
20.36 |
301.4 |
27,870 |
105.6 |
759.5 |
26.79 |
2.52 |
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HQ |
4x4 |
4 |
14.8 |
14.27 |
211.1 |
29,583 |
112.1 |
597.0 |
21.06 |
2.83 |
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HQ |
4x4x3 |
4 |
14.8 |
17.69 |
261.7 |
27,954 |
105.9 |
697.9 |
24.62 |
2.67 |
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HQ |
4x4.5 |
4 |
14.8 |
10.57 |
156.4 |
30,737 |
131.0 |
428.1 |
15.10 |
2.74 |
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HQ |
4x4.5-BN |
4 |
14.8 |
20.13 |
297.9 |
27,785 |
118.4 |
725.4 |
25.59 |
2.44 |
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HQ |
5x3 |
4 |
14.8 |
13.20 |
195.4 |
29,831 |
84.7 |
693.0 |
24.44 |
3.55 |
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HQ |
5x4 |
4 |
14.8 |
19.57 |
289.7 |
28,039 |
106.2 |
900.7 |
31.77 |
3.11 |
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HQ |
5x4.5 |
4 |
14.8 |
19.52 |
289.0 |
26,656 |
113.6 |
865.7 |
30.54 |
3.00 |
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HQ |
6x3 |
4 |
14.8 |
20.60 |
304.8 |
27,668 |
78.6 |
1027.8 |
36.25 |
3.37 |
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Prop |
Prop |
Li-Po |
Input |
Motor |
Input |
Prop |
Pitch Speed |
Thrust |
Thrust |
Thrust Eff. |
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Manf. |
Size |
Cells |
Voltage |
Amps |
Watts |
RPM |
in MPH |
Grams |
Ounces |
Grams/W |
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APC |
4x3.3-FPV |
5 |
18.5 |
22.45 |
415.3 |
34,924 |
109.1 |
854.9 |
30.16 |
2.06 |
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HQ |
4x4 |
5 |
18.5 |
18.67 |
345.4 |
35,835 |
135.7 |
855.1 |
30.16 |
2.48 |
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HQ |
4x4x3 |
5 |
18.5 |
21.84 |
404.0 |
33,383 |
126.5 |
956.5 |
33.74 |
2.37 |
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HQ |
4x4.5 |
5 |
18.5 |
14.92 |
276.0 |
37,170 |
158.4 |
635.4 |
22.41 |
2.30 |
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HQ |
5x3 |
5 |
18.5 |
17.24 |
318.9 |
34,937 |
99.3 |
962.1 |
33.94 |
3.02 |
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HQ |
5x4 |
5 |
18.5 |
25.19 |
466.1 |
32,417 |
122.8 |
1211.3 |
42.73 |
2.60 |
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Prop |
Prop |
Li-Po |
Input |
Motor |
Input |
Prop |
Pitch Speed |
Thrust |
Thrust |
Thrust Eff. |
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Manf. |
Size |
Cells |
Voltage |
Amps |
Watts |
RPM |
in MPH |
Grams |
Ounces |
Grams/W |
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HQ |
4x4 |
6 |
22.2 |
21.87 |
485.6 |
40,528 |
153.5 |
1066.8 |
37.63 |
2.20 |
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HQ |
4x4.5 |
6 |
22.2 |
19.77 |
439.0 |
43,038 |
183.4 |
849.0 |
29.95 |
1.93 |
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HQ |
5x3 |
6 |
22.2 |
22.83 |
506.7 |
40,207 |
114.2 |
1275.3 |
44.98 |
2.52 |
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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 environment, at an
altitude of |
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512 feet above sea level. The test voltages used are based on the
standard output of a Li-Po battery under load, which is 3.70 volts |
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per cell.
If you are using a battery that is larger in capacity than normal, or
has a very high C-rating, then your actual voltages will |
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be higher than those shown in the chart, and
this will result in a higher current and power value for every prop
used. You should |
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always test your actual power system with a
watt meter before flying your model to make sure that you are not exceeding
the |
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recommended current and power ratings of the
motor being used. The prop
recommendations in this chart assume that the motor |
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receives adequate cooling throughout its
operation. If your motor is being used
inside a cowl or fuselage, you must ensure that |
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the motor receives sufficient airflow, and
does not get too hot during operation.
It is always best to use a prop size that pulls no |
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more than 80% of the motors maximum
recommended current value to ensure safe operation under all conditions. |
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