Specification
No. Of cells
4-7x Li-Poly
RPM/V
520
Max. efficiency
86%
Max. efficiency current
20- 40 A (>78%)
No load current / 10 V
2,1 A
Current capacity
45 A/60s
Dimensions
40x20 mm
Shaft diameter
6 mm
Weight
236g/8.32oz.
Recommended model weight
2000-4500 g
Recommended prop without gearbox
13"-15"
BL4020 KV=520 Sample data sheet
Model
Voltage
Propeller
RPM
Max Current
Max Trust
BL4020
21V
13X8(Thin)
10130
44A
4650g
BL4020
17V
13X8(Thin)
8250
31A
3260g
BL4020
22V
12X8(Thin)
10800
42A
4200g
BL4020
17V
14X7(Thin)
8600
43A
3607g
4500g./160oz.
5S 4000mAH
EMAX 80A
14X7(Thin)
2600g./92oz.
6S 5000mAH
EMAX 100A
13X8(Thin)
14X7(Thin)
3600g./127oz.
6S 4000mAH
EMAX 80A
13X8(Thin)
13X6(Thin)