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EPF Hobby Mercury 8 Blades 64mm EDF Ducted Fan + 3700Kv Motor 3-4s


New product

EPF Hobby

Combo 64mm / 8 blades / 3700KV (inrunner) / 3-4S / 158g
> 3S (11.9V) : 35A / 0.84kg / 417W
4S (15.5V) : 54A / 1.3kg / 837W

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Data sheet

Weight (gr):158 gr
EDF thrust (categorization)0-1kg, 1-2kg
Direction of Rotation (EDF Rotor)Classic Counter Clock Wize (CCW)
EDF Diameter Class (mm):64
Blades:8, 8
Turbine shroudMetal
EDF RotorMetal
Turns/min/Volt (Kv):3700
Motor Type:Out-Runner
Motor Diameter (mm):25
Battery Cells:3s - 11.1v, 4s - 14.8v

More info

EPF Hobby Mercury 8 Blades 64mm EDF Ducted Fan + 3700Kv Motor 3-4s

EPF Hobby Mercury 8 Blades 64mm EDF Ducted Fan + 3700Kv Motor 3-4s combo, pre-mounted and dynamically balanced.

Mercury EDF are full alloy high precision CNC made and are offering a very good thermal dissipation. The 8 blades rotor is also made of aluminium and accepts high rotation speeds. The front "spinner" does not rotate (vibration risk elimination) and is protected between 2 sets of 4 stators. Eliminating any risk of rotor ejection. The brushless motor is located at the front of the edf for a better head dissipation.


  • Turbo Innercooling System let EDF down to room temperature whithin 15~20 seconds hald throttle.
  • 60000 RPM High Speed Dynamical Balance Adjustment Rotator and Fan 
  • High Precision CNC Cutting Rotator and Fan
  • The 8 fan blade is the first in the world to use high tensile aluminum alloy.
  • Full Alloy Design
  • Optimized Air Flow.
 Characteristics / LIPO3s4s
 Voltage11.9V 15.5v
 Current 35A54A
 Controller  >=50A / LV   >=65A / LV  
 Recommended Battery   >= 2600mAh 35C  >= 2600mAh 35C 

The controller should be chosen 20% over rated due to the long lasting load.
LV = low voltage controller up to 6s, HV = high voltage controller above 6s.
Battery should be chosen about 15/ - 1/20 of the max current for 4-3 minutes WOT. 30-40 C is appropriate.
* Caution: best working performance for the 3700kv is achieved with a 4s Lipo. Most batteries will transfert heat to the motor if used with 5s Lipo. If you want to use 5s, please make sure your transmitter thrust curve limits the max motor current to 70A. We don't recommend using 5s and will offer any guarantee and will reject any responsibility if used with 5s.

Note: higher capacity and quality Lipo can produce better performances. Please read the below manufacturer table :


  • Max Power: 1250Watts
  • Duct Inside diameter: Φ64mm 
  • Total Weight:160g(approx.) 
  • Blades number: 8
  • Motor: 25mm - 3700kv Brushless
  • Motor timing: Low or 2 degre
  • Working volatage: 7,4v (2s) to 14,8v (4s) (5s possible without any guarantee)
  • Weight: 162g (approx.)


  • Mercury 64A KV3700 Alloy EDF X1
  • Install Manual x1
  • Mounting Fixture  X2
  • M2.5 x4 4pcs
Each motor uses a different cable color for user recognition. Blue is 3700Kv and red is 4700Kv.



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