HobbyStar 3670 4-Pole Waterproof Brushless Sensorless Motor



HobbyStar 3670 4-pole brushless motor provides tremendous torque and sustained high-RPM power. 70mm can with recessed fins is also a great fit in boat and EDF applications. Versatile waterproof design allows you to drive in extreme conditions and motor leads come with pre-installed 4.0mm gold-plated bullet plugs for easy, no-soldering connection.


  • 4-pole motor with 12-slot high-torque design
  • High-purity copper windings maximize efficiency
  • High-RPM ABEC5 oversized bearings
  • Precision balanced rotor for smooth operation and maximum RPM
  • Super-thin (0.2mm) stator laminations 

Voltage recommendations in the table below are guidelines for the voltage you can safely run.  It is still critical that the user monitor motor temps and adjust gearing if necessary, any motor can overheat to the point of destruction if over-geared even when running at or below the rated voltage. 


      Specifications for all variants:

      Turns KV (RPM/Volt) Max Voltage Max Amps Rotor Poles IO Resistance Watts Max RPM Length (mm) Diameter (mm) Weight (g) Shaft Diameter (mm) Shaft Length (mm) Connectors
      3T 1850 6S 66A 4 2.4A 0.0165 1600W 60,000 70 36 275 5.0 17 4.0mm gold
      2.5T 2280 6S 70A 4 2.8A 0.0121 1600W 60,000 70 36 275 5.0 17 4.0mm gold
      2T 3050 5S 89A 4 3.6A 0.0069 1600W 60,000 70 36 275 5.0 17 4.0mm gold

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