Yuneec H520E Brushless Motor | 110x21mm 1150W 720KV | OE YUN-M11021

One motor. 110 mm bell, 21 mm deep, 1150 W, 720 KV. Three phase leads on 4 mm bullets and a five core sensor cable ending in a small white plug, all of it inside black braid. No arm, no prop, no screws.

Yuneec calls it YUNH520120. We list it as YUN-M11021. Three shops in Europe sell the Yuneec number, one German, one Spanish, one Lithuanian, and all three describe it as the motor for the H520, the H520E and the Typhoon H Plus. Three airframes, one part.

Pull yours before you order. Yuneec makes an A and a B and the only difference is rotation. On a six arm frame they alternate. Two of the same hand will lift the aircraft, then spin it, then put it on its side.

That white plug is not optional. It carries rotor position back to the ESC. Missing, loose or reversed and the airframe refuses to arm, which reads as a dead motor and a dead flight controller at the same time. People buy both.

Six of these hold 1860 g of aircraft before a camera goes on. 520 mm corner to corner, 25 to 30 minutes, 13.5 m/s flat, 500 m ceiling, four cell 6200 mAh pack at 14.8 V nominal.

Five rotor fail safe is Yuneec's own phrase. One motor can quit and the machine stays upright. It does not mean you fly the mission on five. It means you put it down on the nearest flat ground while the other five are still cool enough to touch.

Fitting. Battery out, six screws, and those screws bite into plastic. Start every one by hand, two passes, no impact driver. The magnets will slam the bell down if you let them, and the sensor cable runs exactly where it lands.

Wet day, wet motor. The bell is open on top and the plug sits low on the base. Water in the plug reads as a stutter at low throttle. That is not a shorted winding and it does not need a new motor, only a dry one and a re seat of the connector.

Telling them apart, in order. Hand spin: rough or clicking is a bearing. Nose: burnt varnish is a winding. Meter: uneven resistance across the three phases is a shorted turn. Hot after two minutes of hover while five others are cool: it is pulling current it should not.

In the box, the motor, the braided leads, the sensor plug. Six months on dead on arrival and winding faults. One piece posts from stock, twenty starts a production run at fifteen to thirty days. Arm, propeller and screws are separate.