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Midi fan evo hetrc 650-58-1970


This product is currently out of stock

Product Information

Midi Fan evo ducted fan unit / HET 650-58-1970,
completely mounted, balanced and harmonically tuned

Modern high efficiency multi bladed fan unit.

The fan unit comes completely mounted with a HET 650-58-1970 motor.
The unit is assembled and checked at factory, precision balanced and harmonically tuned.







 14,8 V

 18,5 V

22,2 V


48,50 A

 72,0 A

 91,0 A


718 W

1332 W

2020 W


1,66 kp

2,48 kp

3,20 kp

 efflux velocity

51,90 m/s

63,41 m/s

72,02 m/s






> 60A / LV

> 80A / LV

> 110A / LV


2.500-3.200 mAh

3.600-4.800 mAh

4.500-5.800 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 650-58-1970

 inner diameter: 89,0 mm
 outer diameter: 92,0 mm
 length of shroud: 60 mm, w/o intake lip
 weight, complete: 348 grams (opt. intake rin + 19g)
 fan swept area: 49,40 qcm
 rotor: 11 blades, Nylon (glass reinforced)
 rec. thrust tube dia.: 75 mm diameter
 Timing ESC: approx. 6° (4-pole motor)
 PWM: 8-12 kHz

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.

Product Code: MID9ZL5X38

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