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This is one of my favorite motors with many applications. I've used this motor for setups from converting 10 to 25 size models, sailplanes and larger park flier models.
Specifications:
Weight
Size D x L
Amps
Shaft
Max Motor RPM
KV
Resistance
No Load Current
77g/2.7oz.
27.8mm (1.09") x 32.5mm (1.28")
7-20, 25 15s
4.0mm (1.574")
20k
1220
.058Rm
1.4A
Setup and Performance Chart
# Cells
Prop
Amps
Watts In
RPM
Thrust oz.
Pitch Speed MPH
2
9x5
12.7
95
7,790
18
35
2
9x7
16
120
7,430
21
48
2
10x6
18.9
142
7,120
25
39
2
11x4.7
20.4
153
6,960
26
30
3
8x4
14.7
165
12,010
26
43
3
8x6
19.8
223
11,420
32
63
3
9x5
23.8
268
10,950
39
50
3
10x3.8
25.9
291
10,710
41
37
4
7x6
21.5
323
15,600
37
86
4
8x4
23.2
348
15,380
46
55
5
7x4
22.7
426
19,810
50
71
Estimates based on manufacturers provided constants using E-Calc. High Quality 2100mah used as trial cell in calculations. Actual performance may vary depending on components used, accuracy of data as provided by manufacturer, quality of ESC, weather and many other variables.
 "Himax HC2816 Outrunner Motor 1220KV")