hacker Style Brushless Outrunner 20-22L

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Customer Rated

Dec 02, 2012

I purchased six of these motors and I found them very strong and crash proof on my hexacopter !



Anyway I need four more for my quadcopter but they not yet available.

When they will be?

Carlo

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Customer Rated

Nov 29, 2012

Is this motor available again in near future ?

I need 6 of them, I'll will order them.

Thanks

carlo

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Customer Rated

Jul 27, 2012

Since last few months, HK is running after company's profit and sacrificed the quality of their products. I think, in near future HK will be the LEAST preferred online store to purchase hobby parts.

I bought around 10 of these motors and they just stop spinning after couple of flights. Very bad quality.

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Customer Rated

Jun 16, 2012

super moteur utilis sur un Arcus Robbe 1.80m puissant et trs efficace
a recommander
Adichats

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Certified Buyer Rated

May 17, 2012

best value\price, newer revision comes with caprolon washer instead of brass, but all motors need to be balanced with piece of duct tape

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Customer Rated

May 06, 2012

J'ai achet 6 moteurs de ce type pour un quadricoptre (donc j'en avais pris 2 pour la rechange). Ils ne m'en reste plus que 3 : ils ont tous cess brutalement de fonctionner.
Du coup, je vais choisir un autre modle de moteur pour mon quadricoptre : ces KDA 20-22L ne sont absolument pas fiables.

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Customer Rated

Jan 20, 2012

I bought 4 of these for my new quad. Today after 5 short flights the one burned out taking the ESC with it and causing my quad to crash. :-( Luckily I have a replacement one on order, but I hope the others don't burn out as well...

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Customer Rated

Nov 12, 2011

Used for quad with 10x4.5
1motor was unsoldered.... and repaired
Good chose, very stabilized quad on 1x3000mAh 20c
Overpowered...

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Customer Rated

Jul 21, 2011

execelent moteur pour l'Arcus de chez Robbe a un prix top .super puissant
avec une batterie 1000ma remplace sans probleme celui d'origine
je recommande
Bon vol

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Customer Rated

Jul 17, 2011

I used them for my hexacopter (6 motors) with EPP1045 props, 18A turnigy plush regulators, 3s battery and multiwii. I measured power during hovering with different weights and calculated efficiency:

total copter weight [g]; power per motor [W]; thrust [g/W]
1500 g; 33 W; 7,4 g/W
2000 g; 50 W; 6,8 g/W
2500 g; 67 W; 6,3 g/W
3000 g; 84 W; 5,9 g/W
3500 g; 102 W; 5,7 g/W

3500 g was hard to fly but possible. 4000 g was too much. the alu prop mount screw things diameter is 5 mm.