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I bought a 36v 500w hub motor, but my battery is 24 volts, and with such a battery the speed is only 25-27 km/h. It is clear that the voltage needs to be increased, but buying a new 36v battery is expensive, and you also need a new charger for it. The simplest thing is to rewind the motor to 24v, but it is even easier to simply connect the phases in a triangle. A triangle connection gives a big increase in speed, about 1.5-1.7 times if the controller can handle it. And all due to the reduction in interphase resistance, it is now equal to one phase, not two. Link to the hub motor http://ali.pub/3x31so The link has hub motors with direct drive up to 1.5 kW, at the lowest price. And geared ones from 5000 rubles