EDF Ducted Fan Wemotec Midi Fan evo / HET 650-68-1500

MDE 650-68-1500-PACK

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Modern high efficiency multi bladed fan unit. The fan unit comes completely mounted with a HET 650-68-1500 motor. This Pack is precisely assembled, balanced and tested by us.

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Data sheet

EDF thrust (categorization) 2-3kg, 3-4kg
EDF Diameter Class (mm): 90
Blades: 9
Turbine shroud Synthetic
EDF Rotor Synthetic
Turns/min/Volt (Kv): 1500
Motor Type: In-Runner
Motor Diameter (mm): 36
Shaft diameter (mm): 5
Battery Cells: 6s - 22.2v, 8s - 29.6v

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EDF Ducted Fan Wemotec Midi Fan evo / HET 650-68-1500

Modern high efficiency multi bladed fan unit. The fan unit comes completely mounted with a HET 650-68-1500 motor. 

This Pack, composed with the EDF unit, the motor and the assembling and balancing service, is precisely set, harmonically balanced and tested by us. It can be directly installed inside your model.

Readings

  6s 7s 8s
 Voltage
22,2 V
25,9 V
29,6 V
 Current
51,5 A
63,5 A
80,0 A
 Power
1143 W
1645 W
2368 W
 rpm      
 thrust
2,31 kp
2,92 kp
3,69 kp
 Efflux velocity    
61,06 m/s
68,81 m/s
77,33 m/s
 Efficiency
0,60
0,60
0,59
 Controller
> 60 A / LV
> 80 A / HV
> 90 A / HV
 Battery
  2.500-3.400 mAh  
   3.100-4.200 mAh   
   4.000-5.300 mAh    

 

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.

Set comprises

  • 1 x Midi Fan pro ducted fan unit
  • 1 x HET 650-68-1500
 
 
 inner diameter:  89,0 mm
 outer diameter:  92,0 mm
 length of shroud:  60 mm, w/o intake lip
 weight, complete:  402 grams (opt. intake rin + 19g)
 fan swept area:  49,40 sqcm
 rotor:  11 blades, nylon (glass reinforced)  
   
 rec. thrust tube dia.:   75 mm diameter
 Timing ESC:  approx. 6° (4-pole motor)
 PWM:  8-12 kHz
 
Readings:  We measure with a constant voltage of 3.7 V / cell. Current and thrust are measured with a small intake lip (r=6 mm) at 21° C, 50m asl and standard pressure. Depending on battery, controller and installation you may see higher or lower figures.
 

Motor specifications

  • Diameter : 36 mm 
  • Length : 67.5 mm
  • Shaft Dia. : 5 mm 
  • Weight : 300 grams 
  • Internal resistance: 13
  • No load current (lo): 1.8 
  • Max efficiency: 88% 
  • Poles : 4 
  • No load KV : 1500
  • Suggested lipo cells. : 8-10S 
  • Max amps: 120A (10S)
  • Power Nominal: 3500 watts
  • Recommended advance timing : low
  • Specially designed for 9305 and Midi fan units

Midi Fan evo unit Specifications

Ducted Fan unit of the poular 89 mm Midi Fan class, both optimized for Sound and efficiency. This fan brings efficiency of multibladed fans to a new level. The one piece glass reinforced Nylon rotor comes calibrated and dynamically balanced. All components are compatible to the former Midi Fan pro. 

  • Material: Nylon, ABS, Aluminium
  • Weight: about 102 grams, incl. intake lip
  • Power range: 1.000-4.000 W
  • Max. rpm: 50.000 U/min
  • Rotor: 11-blades (87,5 mm) glass reinforced Nylon
  • Set: all parts, incl. instruction
  • Ageom.: 49,4 qcm 
  • Aeff.: 45,6 qcm 
  • Thrust: 7-50 N
     

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EDF Ducted Fan Wemotec Midi Fan evo / HET 650-68-1500

EDF Ducted Fan Wemotec Midi Fan evo / HET 650-68-1500

Modern high efficiency multi bladed fan unit. The fan unit comes completely mounted with a HET 650-68-1500 motor. This Pack is precisely assembled, balanced and tested by us.

Write a review

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