Electric Flight in Australia

Scorpion 3020-890 outrunner motor

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Peter Pine

PO Box 324
Pottsville Beach 2489
Phone (02) 6676 1437
Fax (02) 6676 2831

E-mail: ppine@northnet.com.au

Back to Scorpion Motors Page

Motor Specifications
Io = 1.90A at 10V
Kv = 890 rpm/volt
R = 0.020 Ohms
Length = 45.7mm
Diameter = 37.5mm
Weight = 166g
Continuous current accepted = 45A
Maximum continuous power = 780W
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 10 turn delta wind with 14 strand 0.25mm wire.

Prop for 3S - 13x8"
Prop for 4S - 11x7"
Prop for 5S - 10x5"

Motor guaranteed for two years

Price = $83

Some power recommendations
Prop	Prop type	Volts	Cells	Revs per minute	Amps	Watts In	Thrust Grams	Recommended controller
10x5	APC	10.5	3S	8,375	14	140	972	Scorpion 35A
12x8	APC	10.5	3S	7,375	32	331	1499	Scorpion 45A
13x8	APC	10.5	3S	7,125	37	388	2026	Scorpion 55A
9x6	APC	14.0	4S	10,925	20	270	1359	Scorpion 35A
10x7	APC	14.0	4S	10,375	29	406	1847	Scorpion 45A

For more extensive prop information, click on this link.

Motors that compare to the Scorpion 3020-14:
Atlas 2921/10, 990 Kv
Axi 2820/12, 990 Kv
Dualsky XM3548CA-5, 850 KV
E-Flite Power 25, 870 Kv
Hacker A30-12L, 1000 Kv
Himax HC3522-0990
Hyperion Z3019-12, 900 Kv
HXT 35-42C, 1000 Kv