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Cobra
C4130/20 Motor Propeller Data |
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Motor Wind |
Motor Kv |
No-Load Current |
Motor Resistance |
I Max |
P Max (6S) |
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20-Turn
Delta |
300 RPM/Volt |
Io = 0.77 Amps @ 20v |
Rm = 0.046 Ohms |
52 Amps |
1150 W |
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Outside
Diameter |
Body Length |
Total Shaft Length |
Shaft Diameter |
Motor Weight |
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49.8
mm, 1.96 in. |
61.8 mm, 2.43 in. |
84.5 mm, 3.33 in. |
6.00 mm, 0.236 in. |
396 gm, 13.97 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 |
16x10-E |
22.2 |
25.11 |
557.4 |
5,654 |
53.5 |
3113 |
109.81 |
5.58 |
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APC |
16x12-E |
22.2 |
31.51 |
699.5 |
5,426 |
61.7 |
2631 |
92.80 |
3.76 |
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APC |
17x8-E |
22.2 |
24.94 |
553.7 |
5,662 |
42.9 |
3399 |
119.89 |
6.14 |
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APC |
17x10-E |
22.2 |
30.12 |
668.7 |
5,474 |
51.8 |
3493 |
123.21 |
5.22 |
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APC |
17x12-E |
22.2 |
33.84 |
751.2 |
5,344 |
60.7 |
3424 |
120.78 |
4.56 |
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APC |
18x8-E |
22.2 |
25.98 |
576.8 |
5,622 |
42.6 |
3772 |
133.05 |
6.54 |
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APC |
18x10-E |
22.2 |
30.62 |
679.9 |
5,459 |
51.7 |
4001 |
141.13 |
5.89 |
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APC |
18x12-E |
22.2 |
42.43 |
941.8 |
5,053 |
57.4 |
3785 |
133.51 |
4.02 |
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APC |
19x8-E |
22.2 |
35.28 |
783.3 |
5,294 |
40.1 |
4556 |
160.71 |
5.82 |
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APC |
19x10-E |
22.2 |
34.70 |
770.3 |
5,317 |
50.4 |
4576 |
161.41 |
5.94 |
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APC |
19x12-E |
22.2 |
40.42 |
897.3 |
5,126 |
58.3 |
4866 |
171.64 |
5.42 |
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APC |
20x8-E |
22.2 |
37.37 |
829.5 |
5,228 |
39.6 |
5046 |
177.99 |
6.08 |
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APC |
20x10-E |
22.2 |
41.52 |
921.7 |
5,021 |
47.5 |
5227 |
184.38 |
5.67 |
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APC |
20x11-E |
22.2 |
45.11 |
1001.5 |
4,973 |
51.8 |
5233 |
184.59 |
5.23 |
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APC |
20x13-E |
22.2 |
46.25 |
1026.8 |
4,836 |
59.5 |
5294 |
186.74 |
5.16 |
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APC |
20x15-E |
22.2 |
58.00 |
1287.5 |
4,533 |
64.4 |
4558 |
160.78 |
3.54 |
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APC |
21x12W-E |
22.2 |
54.50 |
1210.0 |
4,679 |
53.2 |
6062 |
213.83 |
5.01 |
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APC |
21x14-E |
22.2 |
51.27 |
1138.3 |
4,733 |
62.7 |
5887 |
207.66 |
5.17 |
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APC |
22x10-E |
22.2 |
52.60 |
1167.7 |
4,703 |
44.5 |
6362 |
224.41 |
5.45 |
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MAS |
16x8x3 |
22.2 |
23.37 |
518.8 |
5,719 |
43.3 |
3256 |
114.85 |
6.28 |
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MAS |
16x10x3 |
22.2 |
29.07 |
645.2 |
5,415 |
51.3 |
3744 |
132.06 |
5.80 |
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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 |
14x10-E |
29.6 |
22.64 |
670.1 |
7,750 |
73.4 |
3201 |
112.91 |
4.78 |
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APC |
14x12-E |
29.6 |
32.49 |
961.6 |
7,318 |
83.2 |
3024 |
106.67 |
3.14 |
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APC |
15x8-E |
29.6 |
23.63 |
699.5 |
7,595 |
57.5 |
3726 |
131.43 |
5.33 |
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APC |
15x10-E |
29.6 |
34.79 |
1029.7 |
7,131 |
67.5 |
3928 |
138.55 |
3.81 |
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APC |
16x8-E |
29.6 |
38.61 |
1142.9 |
7,084 |
53.7 |
4633 |
163.42 |
4.05 |
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APC |
16x10-E |
29.6 |
42.41 |
1255.2 |
6,939 |
65.7 |
4616 |
162.82 |
3.68 |
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APC |
16x12-E |
29.6 |
48.86 |
1446.2 |
6,694 |
76.1 |
4007 |
141.34 |
2.77 |
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APC |
17x8-E |
29.6 |
40.91 |
1210.9 |
6,994 |
53.0 |
5364 |
189.21 |
4.43 |
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APC |
17x10-E |
29.6 |
47.94 |
1419.0 |
6,704 |
63.5 |
5524 |
194.85 |
3.89 |
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APC |
17x12-E |
29.6 |
53.50 |
1583.6 |
6,549 |
74.4 |
5091 |
179.58 |
3.21 |
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APC |
18x8-E |
29.6 |
40.74 |
1205.9 |
7,004 |
53.1 |
6021 |
212.38 |
4.99 |
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APC |
18x10-E |
29.6 |
48.04 |
1422.1 |
6,768 |
64.1 |
6279 |
221.48 |
4.42 |
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APC |
19x8-E |
29.6 |
56.51 |
1672.6 |
6,400 |
48.5 |
6860 |
241.98 |
4.10 |
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MAS |
13x8x3 |
29.6 |
21.22 |
628.1 |
7,808 |
59.2 |
3173 |
111.92 |
5.05 |
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MAS |
14x7x3 |
29.6 |
25.11 |
743.3 |
7,645 |
50.7 |
3790 |
133.69 |
5.10 |
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MAS |
14x9x3 |
29.6 |
29.21 |
864.7 |
7,366 |
62.8 |
4254 |
150.05 |
4.92 |
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MAS |
15x7x3 |
29.6 |
30.33 |
897.7 |
7,315 |
48.5 |
4534 |
159.93 |
5.05 |
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MAS |
16x8x3 |
29.6 |
35.91 |
1063.0 |
7,203 |
54.6 |
5212 |
183.85 |
4.90 |
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MAS |
16x10x3 |
29.6 |
45.68 |
1352.1 |
6,824 |
64.6 |
5976 |
210.80 |
4.42 |
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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 |
12x8-E |
37.0 |
23.03 |
852.3 |
9,758 |
73.9 |
2892 |
102.01 |
3.39 |
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APC |
12x10-E |
37.0 |
28.64 |
1059.8 |
9,472 |
89.7 |
3080 |
108.64 |
2.91 |
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APC |
13x6.5-E |
37.0 |
26.34 |
974.4 |
9,590 |
59.0 |
3922 |
138.34 |
4.03 |
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APC |
13x8-E |
37.0 |
28.65 |
1060.0 |
9,477 |
71.8 |
3869 |
136.47 |
3.65 |
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APC |
13x10-E |
37.0 |
38.52 |
1425.3 |
8,999 |
85.2 |
3671 |
129.49 |
2.58 |
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APC |
14x7-E |
37.0 |
33.09 |
1224.3 |
9,134 |
60.5 |
4558 |
160.78 |
3.72 |
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APC |
14x8.5-E |
37.0 |
35.10 |
1298.6 |
9,158 |
73.7 |
4591 |
161.94 |
3.54 |
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APC |
14x10-E |
37.0 |
34.63 |
1281.3 |
9,211 |
87.2 |
4467 |
157.57 |
3.49 |
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APC |
14x12-E |
37.0 |
49.73 |
1839.9 |
8,566 |
97.3 |
4068 |
143.49 |
2.21 |
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APC |
15x4-E |
37.0 |
26.28 |
972.5 |
9,594 |
36.3 |
4832 |
170.44 |
4.97 |
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APC |
15x6-E |
37.0 |
34.45 |
1274.5 |
9,063 |
51.5 |
5277 |
186.14 |
4.14 |
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APC |
15x8-E |
37.0 |
36.37 |
1345.8 |
9,121 |
69.1 |
5233 |
184.59 |
3.89 |
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APC |
15x10-E |
37.0 |
53.62 |
1984.0 |
8,389 |
79.4 |
5385 |
189.95 |
2.71 |
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MAS |
11x8x3 |
37.0 |
18.83 |
696.6 |
9,984 |
75.6 |
3016 |
106.39 |
4.33 |
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MAS |
12x6x3 |
37.0 |
18.77 |
694.6 |
9,867 |
56.1 |
3220 |
113.58 |
4.64 |
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MAS |
12x8x3 |
37.0 |
26.43 |
977.7 |
9,452 |
71.6 |
4112 |
145.05 |
4.21 |
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MAS |
13x8x3 |
37.0 |
30.37 |
1123.7 |
9,393 |
71.2 |
4707 |
166.03 |
4.19 |
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MAS |
14x7x3 |
37.0 |
35.59 |
1317.0 |
9,154 |
60.7 |
5498 |
193.93 |
4.17 |
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MAS |
14x9x3 |
37.0 |
42.48 |
1571.6 |
8,846 |
75.4 |
6124 |
216.02 |
3.90 |
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MAS |
15x7x3 |
37.0 |
44.20 |
1635.2 |
8,773 |
58.2 |
6612 |
233.23 |
4.04 |
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MAS |
16x8x3 |
29.6 |
50.75 |
1502.3 |
8,502 |
64.4 |
7422 |
261.80 |
4.94 |
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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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