Electric Flight in Australia

 

Scorpion SII-3020-890 outrunner motor

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 Peter Pine

PO Box 324
Pottsville Beach 2489
Phone (02) 6676 1437
Mobile (0407) 732 440

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 = Hifei ESC
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 = $159

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
Motors that compare to the Scorpion 3020-890:
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