Electric Flight in Australia

 

Scorpion SII-3026-710 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 = 1.56A at 10V
Kv = 710 rpm/volt
R = 0.022 Ohms
Length = 51.7mm
Diameter = 37.5mm
Weight = 205g
Continuous current accepted = 60A
Maximum continuous power = 1000W
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
An LRK (outrunner) brushless motor for R/C aircraft up to 3.5 kg powered by 7-16 cells or 2-5S LiPo; suitable for cabin models, scale models, aerobatic models and gliders - this motor would work well in competition gliders with a large prop - use the 110A speed controller if you are going to push this motor. 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 26mm long in this 3026 version. The motor wind is a 9 turn delta wind with 16 strand 0.25mm wire.

Prop for 2S - 16x10"
Prop for 3S - 14x7"
Prop for 4S - 12x6"
Prop for 5S - 10x7"

Motor guaranteed for two years

Price = $189 in stock now

Some power recommendations**
Prop Prop type Volts Cells Revs per minute Amps Watts In Thrust Grams Recommended controller
13x6.5 APC 10.5 3S   36A 365   Hyperion 60A
15x7 APC 10.5 3S   50A 525   Hyperion 70A
Prop figures above:
Are actual measurements taken with this motor fitted to my E-Flite Beaver cabin model. The model is 1.8m wingspan and weighs 2.36kg. I tried a 15x7" prop on 3S first and the Beaver flew like a pylon racer. I stepped back to the 13x6.5" and I now fly on full throttle for take-off and half-throttle during the flight. Measurements with the 13x6.5" were taken with a partly depleted battery using an Emeter, so real figures may be a little higher.

Motors that compare to the Scorpion 3026-710:
Atlas 2927/10, 740 KV
Axi 2826/12, 760 KV
Dualsky XM4250CA-6, 840 KV

Hacker A30-12XL, 770 KV
Himax HC3528-0800
Hyperion Z3025-10, 815 KV
HXT 35-48C, 800 KV

Rimfire 35-48-850
Thunder Tiger OBL36/07-46A, 740 KV
Torque 2814-605
E-Flite Power 32, 770 KV

Manufacturer's Power Recommendations Below
Some power recommendations*
Prop Prop type Volts Cells Revs per minute Amps Watts In Thrust Grams Recommended controller
12x6 APC 10.5 3S 7,250 23A 235 1550 Hifei 60A
14x7 APC 10.5 3S 6,575 38A 398 2300 Hifei 60A
12x6 APC 14.0 4S 9,125 39A 544 2400 Hifei 60A
13x8 APC 14.0 4S 8,475 56A 775 2850 Hifei 80A