Spektrum Firma 3674-2300Kv Brushless Motor SPMXSM5700

The Spektrum Firma 3674-2300Kv Sensorless Brushless Motor - 5mm Shaft, part number SPMXSM5700, is a four-pole sensorless brushless motor with a 5mm shaft. It is specified for 2–4S input voltage, covering 7.4V to 11.1V, and has a stated output rating of 2300Kv.

The 2300Kv figure is given as the motor's RPM per volt specification. The sensorless brushless design and four-pole construction identify the motor type, while the 5mm shaft provides the stated shaft interface. The shaft extends 22mm from the motor body, giving the key dimensions needed when checking suggested compatibility with an RC drivetrain.

Specifications

• Input voltage: 2–4S, 7.4V–11.1V
• Motor type: Sensorless brushless
• Number of poles: 4
• RPM/volt rating: 2300Kv
• Outer diameter: 37mm
• Product length: 74mm
• Shaft diameter: 5mm
• Shaft length: 22mm

The motor has an outer diameter of 37mm and a product length of 74mm. Its listed weight is 330g, or 11.64oz. These measurements and the shaft dimensions can be compared with the available space and drivetrain requirements of the intended RC model before installation.

The box contains one Spektrum Firma 3674-2300Kv Sensorless Brushless Motor with a 5mm shaft. The motor is supplied as the single item described above.