KB45-12L 1400kv Brushless Inrunner

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Customer Rated

Oct 27, 2010

Can sombody tell me what esc to use.....quickly before there is a fire.....

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Customer Rated

Jul 01, 2010

here is a test http://www.youtube.com/watch?v=am8b1tFbkQA

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Customer Rated

May 28, 2010

WARNING! I received mine with a 5mm shaft, not 6mm as informed on specification above! HK should correct this information!

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Customer Rated

Dec 16, 2009

motor was great and ran cool with tons of torque....for about 20 minutes. the shaft separated from the rotor and the motor is now useless to me. some people say you can glue the rotor to the shaft with green loctite or JB weld, but i ended up getting a better quality motor.



so, if you add some form of extra glue to the rotor and shaft, this motor is great. my other KB motor ran for 3 hours (non-cont.) before it's shaft separated from the rotor.

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Certified Buyer Rated

Jul 21, 2009

este na minha opiniao o melhor dos motores kb45 para ser usado em cascos de ate 1mt.

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Customer Rated

Apr 08, 2009

Hi, KB45 in Emaxx !!!

what's your pinion & spur gears on Emaxx?

6s lipo is ok without hot temp on the motor?

I hope to use this ...

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KB45 in Emaxx

Nov 14, 2007

I'm very happy with this motor, it does produce massive torque at a bargain price. I measured 1490kV under no load.

I am using it in an Emaxx at 6S to keep the current down. I've recorded peak power usage around 1500W which is more than enough for the heavy truck.

Its not too quick to heat up but the the temp does continue to climb so I've added two stretched 540 heatsinks and a 50mm fan (did not want to drill endbell holes to let dirt in) and now I can keep it below 70C after 10min.

I believe the magnets don't like to go above 80C so temps need to be watched carefully.

The rotor balance isn't that great, vibration can be felt when free revving the motor. And the bearings don't seem that smooth either. But so far the KB45 has held up well to the abuses of offroad driving and thats all I want it to do.

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KB45-12L 1400kv

Nov 14, 2007

great motor for the money, real strong, only thing missing is ventilation holes in the front and the back, as it tends to run a little hot.

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Geat Motor & Price

Nov 14, 2007

Great Motor for this price, You can use different prop for the best performance.

It give me 3 horse power just say bye bye to the gas engine :)



FIVE STAR !!!