Mini Fan evo ducted fan unit / HET2W20, completely assembled, precision balanced and harmonically tuned

Item number: MFE 2W20

69 mm ducted fan unit (9-blades)
3-4s Lipo cells
0.8 - 1.35 kp of thrust
completely mounted, checked, completely balanced and harmonically tuned

Category: Mini Fan evo sets


119,90 €

including 19% VAT. , plus shipping

Recommended retail price: 119,90 €
Not available now!

Delivery status: when light is red, approx. 8-10 days from time of order

Shipping time: 2 - 3 workdays



Modern high efficiency multi bladed fan unit.

The fan unit comes completely mounted with a HET 2W20 motor.
The unit is assembled and checked at factory, precision balanced and harmonically tuned.


Readings
 
3s

4s

 Voltage
11,1 V
14,8 V
 Current
55,5 A
 Power
 
822 W
 rpm    
 thrust
 
1,35 kp
 efflux velocity
 
 
 efficiency
 
 
 controller
> 50 A / HV
> 80 A / LV
 Battery
2.500-3.400 mAh
3.000-3.800 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 Mini Fan evo ducted fan unit
1 x HET 2W20
 inner diameter:  69,0 mm
 outer diameter:  72,0 mm
 length of shroud:  60 mm, w/o intake lip
 weight, complete: 155 grams (opt. intake ring + 15g)
 fan swept area:  29,40 sqcm
 rotor: 9-blades, Nylon (glass reinforced)
 
 rec. thrust tube dia.:  56 mm diameter
 Timing ESC:  approx. 12 (6-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.

Shipping weight: 0,30 Kg
Product weight: 0,20 Kg

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Total entries: 1
5 from 5 Cant beat the sound!

I have tried many different pre assembled edfs and they all claimed to be precision balanced from factory. But this one is the only one that delivers. Currently using it in a multiplex twister and its super quiet. Only the wooosh. Jet like sound. From experience, the twister airframe is somewhat difficult to get good sound from, but no problem for this fan. It is not the most powerfull fan/motor combo. But it seems to run very efficient. And got enough power for this 1250g all up weight plane :) Im loving this fan!

., 03.08.2015
Total entries: 1