HobbyStar 3520 (4250) Brushless Outrunner Motor



HobbyStar brushless outrunner motors are built using high-quality components and precision balanced to ensure a smooth, reliable and powerful motor for your aircraft. Motor shafts can be reversed on all motors, and a hardware kit with mounting plate, prop adapter and hardware kit are included with all motors.


  • 14-pole, 12-slot high-torque design
  • CNC machined 6061 T6 billet aluminum housing
  • High-purity copper windings for maximum efficiency
  • High RPM ABEC 5 oversized bearings
  • Precision balanced rotor 
  • Super-thin stator laminations (0.2mm)
  • Flexible silicone leads with pre-installed gold-plated connectors


      Specifications for all variants:

      KV (RPM/Volt) Model Watts Cells Max Amps Rotor Poles IO Resistance Motor Size Stator Size Weight Propeller Shaft Diameter (mm) Connectors
      720 3520-07 1120 3-5S 56A 14 1.8A 0.0298 42x50mm 3520 205g 13*8/14*7/12*10 5mm 4.0mm
      800 3520-06 1250 3-5S 62A 14 2.3A 0.0212 42x50mm 3520 205g 13*10/14*7/14*10 5mm 4.0mm

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