HobbyKing Donkey ST4010-820kv Brushless Motor (UK Warehouse)
When pulling power matters and looks.. well.. just don't, then the HobbyKing Donkey ST4010 is the work horse for you. This tough-as-rawhide motor features a heavy duty mount, a huge 6mm shaft and self oiling bushings that just wont give up like some of the bearings in those little "Show Pony" motors.
Specs: RPM/v: 820kv Dimensions: 51 x 23mm Shaft: 6.0mm Voltage: 11.1~14.8V Weight: 194g No-load current: 2.8a @ 11.1v Max Current: 60A Max Watts: 680W Mounting Holes: 65mm
12x8 - 11.1v - 39a - 1750g Thrust
11x5 - 14.8v - 44a - 2250g Thrust
10x5 - 14.8v - 30a - 1850g Thrust
for this propeller
what the number of blades for every propeller?
and can i change it to another one that can be suitabe than it?
I don't think we actually weighed it; It was two aluminum bars put together for an X quad with an APM flight controller. I was surprised to see such large motors do a nice job of driving a quad.
Well impressed with this motor - my daughter had a Century Riot - Rubbish kit no guts at all I put this motor in having made a change to the cowling added a hobby king controller and it goes brilliantly - it is a perfect 40 size motor with grunt and at this price a bargain. I use 4 cells with this and it is a perfect match - 3000 or 3300 lipo's. the great thing about this motor is the 5mm shaft - no chance of bending this in a hurry.
800 watts on 4s no problem, but bushings wear fairly quickly, still usable but slight vibrations due to wear.
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Heres the thing, i am running these on a 4s with a 11" slow fly prop on an octo, these motors heat up big time, hot enough that some of high heat glue from my hot glue gun melted.
And i was at 50pcnt throttle most of the time, not goot at all.
Thos cheap bell type brushless outrunners that are blue and say 3s max, i rand those on a 4s with 12" props, they get slightly warm, are half the weight, half the size and cheaper, they also give the same thrust pretty much, this donkey motors are just rubbish
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Excellent motor I am now running two, both drive 13x6.5 APC props using a 60A SS Esc.
One is pulling a scratch 4.7lb, 1/4 scale Vans RV-9 around with great authority, and 12 min flight times.
Quiet, pwerfull and robust. Perfect HK !