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Cobra
C2217/12 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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12-Turn
Delta |
1550 RPM/Volt |
Io = 1.15 Amps @ 8v |
Rm = 0.044 Ohms |
32 Amps |
350 W |
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Outside
Diameter |
Body Length |
Total Shaft Length |
Shaft Diameter |
Motor Weight |
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27.7
mm, 1.09 in. |
33.0 mm, 1.30 in. |
47.0 mm, 1.85 in. |
3.17 mm, 0.125 in. |
74.0 gm, 2.61 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 |
8x3.8-SF |
7.4 |
14.14 |
104.6 |
9,120 |
32.8 |
655 |
23.10 |
6.26 |
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APC |
8x4-E |
7.4 |
12.14 |
89.8 |
9,400 |
35.6 |
559 |
19.72 |
6.22 |
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APC |
8x6-E |
7.4 |
17.37 |
128.5 |
8,670 |
49.3 |
639 |
22.54 |
4.97 |
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APC |
8x6-SF |
7.4 |
21.84 |
161.6 |
8,040 |
45.7 |
685 |
24.16 |
4.24 |
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APC |
9x3.8-SF |
7.4 |
18.32 |
135.6 |
8,537 |
30.7 |
817 |
28.82 |
6.03 |
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APC |
9x4.5-E |
7.4 |
16.65 |
123.2 |
8,770 |
37.4 |
765 |
26.98 |
6.21 |
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APC |
9x4.7-SF |
7.4 |
17.91 |
132.5 |
8,610 |
38.3 |
808 |
28.50 |
6.10 |
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APC |
9x6-E |
7.4 |
19.17 |
141.9 |
8,460 |
48.1 |
774 |
27.30 |
5.46 |
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APC |
9x6-SF |
7.4 |
27.90 |
206.5 |
7,146 |
40.6 |
850 |
29.98 |
4.12 |
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APC |
9x7.5-E |
7.4 |
25.18 |
186.3 |
7,570 |
53.8 |
751 |
26.49 |
4.03 |
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APC |
9x7.5-SF |
7.4 |
30.77 |
227.7 |
6,660 |
47.3 |
634 |
22.36 |
2.78 |
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APC |
10x3.8-SF |
7.4 |
25.86 |
191.4 |
7,430 |
26.7 |
1007 |
35.52 |
5.26 |
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APC |
10x4.7-SF |
7.4 |
27.40 |
202.8 |
7,270 |
32.4 |
1026 |
36.19 |
5.06 |
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APC |
10x5-E |
7.4 |
22.04 |
163.1 |
8,020 |
38.0 |
905 |
31.92 |
5.55 |
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APC |
10x6-E |
7.4 |
23.42 |
173.3 |
7,800 |
44.3 |
946 |
33.37 |
5.46 |
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APC |
10x7-E |
7.4 |
26.15 |
193.5 |
7,420 |
49.2 |
954 |
33.65 |
4.93 |
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APC |
10x7-SF |
7.4 |
33.55 |
248.3 |
6,320 |
41.9 |
984 |
34.71 |
3.96 |
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APC |
11x3.8-SF |
7.4 |
27.85 |
206.1 |
7,130 |
25.7 |
1100 |
38.80 |
5.34 |
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APC |
11x4.7-SF |
7.4 |
31.46 |
232.8 |
6,580 |
29.3 |
1151 |
40.60 |
4.94 |
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APC |
11x5.5-E |
7.4 |
27.57 |
204.0 |
7,280 |
37.9 |
1106 |
39.01 |
5.42 |
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APC |
11x7-E |
7.4 |
30.49 |
225.6 |
6,770 |
44.9 |
1085 |
38.27 |
4.81 |
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GWS |
8x4-DD |
7.4 |
9.58 |
70.9 |
9,760 |
37.0 |
499 |
17.60 |
7.04 |
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GWS |
9x5-DD |
7.4 |
16.21 |
120.0 |
8,830 |
41.8 |
771 |
27.20 |
6.43 |
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GWS |
9x5x3-DD |
7.4 |
20.08 |
148.6 |
8,320 |
39.4 |
856 |
30.19 |
5.76 |
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GWS |
10x6-DD |
7.4 |
20.94 |
155.0 |
8,160 |
46.4 |
904 |
31.89 |
5.83 |
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GWS |
10x6x3-DD |
7.4 |
25.74 |
190.5 |
7,480 |
42.5 |
1029 |
36.30 |
5.40 |
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GWS |
10x8-HD |
7.4 |
29.68 |
219.6 |
6,830 |
38.8 |
834 |
29.42 |
3.80 |
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GWS |
11x7-DD |
7.4 |
28.15 |
208.3 |
7,040 |
46.7 |
1103 |
38.91 |
5.29 |
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GWS |
12x6-HD |
7.4 |
29.69 |
219.7 |
6,770 |
38.5 |
1165 |
41.09 |
5.30 |
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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 |
15.95 |
177.0 |
13,990 |
53.0 |
824 |
29.07 |
4.65 |
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APC |
7x5-E |
11.1 |
20.14 |
223.6 |
13,350 |
63.2 |
829 |
29.24 |
3.71 |
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APC |
7x6-E |
11.1 |
20.88 |
231.8 |
13,210 |
75.1 |
890 |
31.39 |
3.84 |
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APC |
8x4-E |
11.1 |
22.92 |
254.4 |
12,860 |
48.7 |
1088 |
38.38 |
4.28 |
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APC |
8x6-E |
11.1 |
31.72 |
352.1 |
11,440 |
65.0 |
1167 |
41.16 |
3.31 |
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APC |
9x4.5-E |
11.1 |
29.99 |
332.9 |
11,630 |
49.6 |
1403 |
49.49 |
4.21 |
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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 |
5.5x4.5-E |
14.8 |
14.99 |
221.9 |
19,470 |
83.0 |
590 |
20.81 |
2.66 |
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APC |
6x4-E |
14.8 |
16.87 |
249.7 |
19,130 |
72.5 |
791 |
27.90 |
3.17 |
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APC |
6x5.5-E |
14.8 |
21.09 |
312.1 |
18,140 |
94.5 |
739 |
26.07 |
2.37 |
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APC |
7x4-E |
14.8 |
25.82 |
382.1 |
17,234 |
65.3 |
1304 |
46.00 |
3.41 |
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APC |
7x5-E |
14.8 |
31.20 |
461.8 |
16,200 |
76.7 |
1253 |
44.20 |
2.71 |
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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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