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Scorpion SII-4025-520KV motor with gold end caps, black housing and three connector wiresScorpion SII-4025-520KV motor with gold end caps, black housing and three connector wires

Scorpion SII-4025-520KV

The Scorpion SII-4025-520KV is an airplane motor for 67-68" aerobatic aircraft using a 6s battery and sport planes in the 8-15lb range. It combines a 12-arm stator, 14 magnet poles and an 11 Turn Delta winding, with maximum continuous ratings of 100 Amps and 2000 Watts.

ScorpionDrone motor
Motor Kv
520 RPM / Volt
Weight
353 Grams (11.96 oz)

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Product overview

The Scorpion SII-4025-520KV motor is intended for aerobatic airplanes in the 67-68" range operating on a 6s battery, as well as sport planes weighing 8-15lb. Its recommended setup pairs the motor with a Tribunus II 06-120A SBEC ESC, a 6s 3500-5000mah battery and a 17x10E or 18x8E propeller. The motor has a speed constant of 520 RPM / Volt, a maximum continuous current of 100 Amps and a maximum continuous power of 2000 Watts.

The motor incorporates a 40.0 mm stator with 25.0 mm thickness, 12 stator arms and 14 magnet poles. Its 11 Turn Delta winding uses 26-Strand 0.25mm wire. The body measures 48.9 mm in outside diameter and 54.1 mm in length, with a 5.98 mm shaft diameter, 85 mm overall shaft length and M8*1.0 adapter thread. Motor weight is 353 Grams. Electrical characteristics include 0.016 Ohms resistance and 1.40 Amps no-load current at 10 v, with 5deg motor timing and an 8kHz drive frequency.

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Specifications

SpecificationValue & conditions
ProductScorpion SII-4025-520KV motor
Aerobatic airplane applicationAerobatic airplanes in the 67-68" rangeAerobatic airplanes running on a 6s battery.
Sport airplane applicationSport planes in the 8-15lb range
Recommended ESCTribunus II 06-120A SBECRecommended setup.
Recommended battery6s 3500-5000mahRecommended setup.
Recommended propellers17x10E, 18x8ERecommended setup.
Stator Diameter40.0 mm (1.575 in)
Stator Thickness25.0 mm (0.954 in)
No. of Stator Arms12
Magnet Poles14
Motor Wind11 Turn Delta
Motor Wire26-Strand 0.25mm
Motor Kv520 RPM / Volt
No-Load Current (Io)1.40 AmpsAt 10 v.
Motor Resistance (Rm)0.016 Ohms
Max Continuous Current100 Amps
Max Continuous Power2000 Watts
Weight353 Grams (11.96 oz)
Outside Diameter48.9 mm (1.925 in)
Shaft Diameter5.98 mm (0.235 in)
Adapter Thread sizeM8*1.0
Body Length54.1 mm (2.129 in)
Overall Shaft Length85 mm (3.346 in)
Max Lipo Cell6s
Motor Timing5deg
Drive Frequency8kHz
Weight including packaging735gIncluding packaging.

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