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EDF Ducted Fan HET 6904 / HET 2W-23

D2W23-6904

New product

High End Technology RC (HET)

High End Technology RC (HET) 6904  EDF Ducted Fan with Typhoon HET EDF 2W-23 28mm 2950Kv brushless pre installed motor. Recommended for 4s and 5s Lipo. For models up to 1.7Kg.

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$94.73

Data sheet

Direction of Rotation (EDF Rotor) Classic Counter Clock Wize (CCW)
EDF Diameter Class (mm): 70
Blades: 4
Turns/min/Volt (Kv): 2950
Motor Type: In-Runner
Motor Diameter (mm): 28
Shaft diameter (mm): 3.17

More info

High End Technology RC (HET) 6904  EDF Ducted Fan with Typhoon HET EDF 2W-23 28mm 2950Kv brushless pre installed motor. Recommended for 4s and 5s Lipo. For models up to 1.7Kg.

The fan unit comes completely mounted with a HET 2W-23 motor.  The unit is assembled and checked at factory, precision balanced and harmonically tuned.


Set comprises:

  • 1 x High End Technology RC (HET) 6904 Ducted Fan Unit Fan unit with optional intake lip
  • 1 x HET 2W-23 motor
 
Specification:
 
  • Dynamcially balanced rotor
  • 3.175mm chuck adaptor
  • Motor pre-installed and balanced 
  • 3.5mm/4mm gold connector installed
  • Recommended for 4S Lipo and 5s Lipo.
 
Recommended ESC setup:
 
  • Cutoff Voltage: Auto
  • Current Limiting: Standard
  • Brake Type: Disable
  • Timing Advance: Middle 18 deg
  • Cutoff Type: Hard
  • Start Type: Fast Start
  • Governor Mode: Auto
  • PWM: 16K
 
HET 6904 Ducted Fan Units standard description :
 

HET 4 Blade 6904 69mm EDF Ducted Fan for use with brushless motor like the HET 2W, 2W-20, 2W-23, 2w-25 or equivalent. Fits into a Wemotec mini fan space

The HET fan unit is a 480 class mini fan that comes with a cooling fan. The fan unit is compatible with Wemotec fan units. The fan unit is constructed of a carbon filled plastic and aluminum set up. The HET fan unit features a carbon reinforced housing. The stiffer housing will produce more thrust, better efficiency and less of a chance of a rotor blade breaking off the hub at higher rpm's.

  • Outside Diameter: 72mm
  • Inside Diameter: 69mm
  • Collet Adaptor Size: 3.175mm 
  • Weight: 56 grams - 68 grams (with cooling ring)
  • Rotor: 4 bladed (68mm) dynamically balanced
  • Comes complete with tools, instructions and intake ring
  • RPM Range: Up to 50,000 rpm
  • For use with brushless motor like the HET 2W, 2W-20, 2W-23, 2w-25 or equivalent.
  • Fits into a Wemotec mini fan space
 

Note: Use ahesive tape or CA glue to securely attach the intake ring to the fan unit before running the fan unit. Otherwise strong air current would blow out the intake ring.

 
About the 2w23 motor:
 

Typhoon HET EDF 2W-23 Motor 28mm 2950Kv, for pylon / EDF jets up to 2 kgrams (5s). Suitable for HET EDF unit 6904, WemoTec Mini Fan, Changesun 70mm or equivalent.

  • Diameter : 28 mm
  • Length : 47 mm
  • Shaft Dia. : 3.17 mm
  • Weight : 100 grams
  • No load current(lo) : 2.4
  • Internal resistance: 0.015
  • KV : 2950
  • No. of poles: 6
  • Max Current: 75 A
  • Max efficiency: 87%
  • Power Nominal: 850 Watts on 5 cells
  • Advance timing : 18° Middle PWM: 16 Khz
 

Note: Don't run 2W-23 for over 30 seconds at full throttle. On 5s the RPM is close to 45000 in our 6904 fan unit. It is better to use throttle management. After flight cool the motor for 20-30 seconds at low RPM

Note: Use adhesive adhésive or glue to securely attach the cooling ring to the motor before running the motor. In case of use with an EDF fan unit, strong air current could blow away the colling ring. Thermal paste usage is also recommended.

 
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    EDF Ducted Fan HET 6904 / HET 2W-23

    EDF Ducted Fan HET 6904 / HET 2W-23

    High End Technology RC (HET) 6904  EDF Ducted Fan with Typhoon HET EDF 2W-23 28mm 2950Kv brushless pre installed motor. Recommended for 4s and 5s Lipo. For models up to 1.7Kg.

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