Electric Flight in Australia
 

Scorpion 2205-40 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
 
 
 
 
 
 
 
 
 
 
 
  
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Motor Specifications
Io = 0.56A at 10V
Kv = 1551 rpm/volt
R = 0.217 Ohms
Length = 17.6mm
Diameter = 27.9mm
Weight = 32.0g
Continuous current accepted = 10A
Maximum continuous power = 110W
Shaft = 3mm 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 15A
A sports LRK (outrunner) brushless motor for small R/C aircraft up to 0.6 kg powered by 6-10 cells or 2-3S LiPo; suitable for cabin models, scale models, aerobatic models and gliders. No gearbox is required because of the high torque of this motor type.

The S22 series of motors from Scorpion all have 22mm diameter stators - there are 12 stator arms and 14 magnets in the rotor housing. The stator is 5mm long in this 2205 version. The motor wind is a 40 turn delta wind with 5 strand 0.15mm wire.

Motor supplied with 3.5mm bullet connectors, a cross-style backplate mount with 4 screws, a wobbly-style prop adaptor with 2 O-rings for GWS style propellers and a 5mm OD threaded shaft prop adaptor for APC style propellers.

Prop for 2S - 9x5"
Prop for 3S - 8x4"

Motor guaranteed for two years

Price = $43

Some power recommendations
Prop Prop type Volts Cells Revs per minute Amps Watts In Thrust Grams Recommended controller
10x6 GWS 7 2S 5,550 9.6A 67 364 Scorpion 15A
11x7 HD GWS 7 2S 4,425 11A 59 369 Scorpion 15A
8x3.8 SF APC 10.5 3S 8,425 12.4A 130 449 Scorpion 25A
9x4.7 SF APC 10.5 3S 7,300 13A 136 461 Scorpion 25A
10x4.7 SF GWS 10.5 3S 5,225 14.3A 150 459 Scorpion 25A
Motors that compare to the Scorpion 2205-40:
Axi 2204-54, 1400 KV
Dualsky XM2822CA-24, 1450 KV
E-Flite Park 300, 1380 KV
Hacker A20-34S, 1500 KV
Hyperion Z2205-34, 1530 KV
HXT 28-22-B, 1400 KV

Click here for a more extensive Prop Data chart for the Scorpion 2205-40.