Scorpion RS-3420 7.5T 4300 kV Brushless Motor for 1/10 and 1/12 Scale RC Cars

The Scorpion RS-3420 7.5T is a high-performance brushless DC car motor designed to meet IFMAR standards for 1/10th and 1/12th scale electric RC racing cars. Built for maximum power and cooling, it features a patented screw-type rotor surface, a built-in cooling fan, and a metal sleeve to protect the rotor magnets. The 4300 kV motor utilizes a 7.5T Y wind, high-purity 1.83 mm copper wire, and CNC machined 7075 aluminum parts. Compatible with up to 2S LiPo cells, it delivers a maximum continuous power of 480 Watts and includes built-in temperature sensors for real-time monitoring when paired with a Scorpion ESC.

Key features

• Patented screw-type rotor surface increases flux density and cooling; a built-in rotor fan increases airflow and reduces internal temperatures
• No plastic inserts in the motor windings, allowing greater copper fill
• Rotor magnets protected by a metal sleeve; the largest glued surface for rotor, shaft and magnets of any motor in its class
• Built-in temperature sensors allow on-track monitoring when used with a Scorpion ESC
• 200% more cooling surface than comparable motors for heat dissipation
• High-grade silicon steel stator for maximum flux density and high-purity copper wire for minimum internal resistance
• High-temperature magnets; motor parts CNC-machined from 7075 aerospace-grade aluminium alloy

Specifications

• No. of Stator Arms: 3
• No. of Stator Poles: 2
• Max Lipo Cell: 2S
• Motor timing: adjustable
• Stator diameter: 34 mm (1.34 in)
• Stator thickness: 21 mm (0.83 in)
• Motor wind: 7.5T Y
• Motor wire: 1-strand 1.83 mm
• Motor kV: 4300 kV (RPM/Volt)
• No-load current (Io/7.8 V): 3.1 A
• Motor resistance (RM): 0.112 Ohms
• Max continuous current: 65 A
• Max continuous power: 480 W
• Weight: 164.8 g (5.8 oz)
• Outer diameter: 36 mm (1.41 in)
• Shaft diameter: 3.17 mm (0.12 in)
• Body length: 52.65 mm (2.07 in)
• Overall shaft length: 67.4 mm (2.65 in)
• Max peak current: 78 A (2 s)
• Max peak power: 576 W (2 s)
• Drive frequency: 8 kHz