Electric Flight in Australia

Scorpion 3020-12 outrunner motor

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Peter Pine

PO Box 1050
Kingscliff 2487
Phone (02) 6676 1437
Fax (02) 6676 2831

E-mail: ppine@northnet.com.au

Back to Scorpion Motors Page

Motor Specifications
Io = 2.46A at 10V
Kv = 1088 rpm/volt
R = 0.030 Ohms
Length = 37.9mm
Diameter = 37.5mm
Weight = 157g
Continuous current accepted = 57A
Maximum continuous power = 800W
Shaft = 5mm carbonised steel (protrudes both ends)
Collet-type prop adaptor and back-mount supplied
Motor fixing = four 3mm bolts supplied
Male bullet connectors fitted to motor
Female bullet connectors supplied
Recommended controller = Scorpion 55A

A sports LRK (outrunner) brushless motor for small R/C aircraft up to 3.0 kg powered by 10-16 cells or 3-5S LiPo; suitable for cabin models, scale models, aerobatic models and gliders. No gearbox is required because of the high torque of this motor type.

All Scorpion 30mm motors have 3 ball bearings to support the rotating housing.

The S30 series of motors from Scorpion all have 30mm diameter stators - there are 12 stator arms and 14 magnets in the rotor housing. The stator is 20mm long in this 3020 version. The motor wind is a 12 turn delta wind with 20 strand 0.21mm wire.

Prop for 3S - 12x8"
Prop for 4S - 10x7"
Prop for 5S - 9x6"

Motor guaranteed for two years

Price now = $86

Some power recommendations
Prop	Prop type	Volts	Cells	Revs per minute	Amps	Watts In	Thrust Grams	Recommended controller
10x5	APC	10.5	3S	9,775	24	250	1389	Scorpion 35A
12x8	APC	10.5	3S	8,075	50	528	1905	Scorpion 55A
13x8	APC	10.5	3S	7,650	57	598	2402	Scorpion 70A
9x6	APC	14.0	4S	12,650	33	461	1916	Scorpion 45A
10x7	APC	14.0	4S	11,800	49	689	2479	Scorpion 55A

Motors that compare to the Scorpion 3020-12:
Atlas 2921/08, 1180 Kv
Axi 2820/10, 1200 Kv
Dualsky XM3548CA-4, 1080 KV
Hacker A30-10L, 1185 Kv
Hyperion Z3019-10, 1070 Kv
HXT 35-42C, 1000 Kv