How fast can a 72v 3000w motor run?
2 Answers
A 72v 3000w motor can run at speeds of 60 to 80 kilometers per hour. Motor: A motor refers to an electromagnetic device that achieves the conversion or transmission of electrical energy based on the law of electromagnetic induction. In circuits, a motor is represented by the letter M (the old standard used D). Its main function is to generate driving torque, serving as a power source for electrical appliances or various machinery. Generators are represented by the letter G in circuits, with the primary function of converting mechanical energy into electrical energy. Classification of motors by power source type: They can be divided into DC motors and AC motors. The working principle of a DC generator is to convert the alternating electromotive force induced in the armature coil into a direct current electromotive force at the brush end through the commutation action of the commutator and brushes.
As a seasoned electric vehicle enthusiast, I can tell you that a 72V 3000W motor can theoretically reach speeds over 70 km/h under no-load conditions. But real-world riding is a different story—factors like your bike's weight, the rider's mass, and tire pressure all drag performance down. If the controller's current limit is set conservatively, you'd be lucky to hit 60 km/h. During my modification days, I learned batteries are the real game-changer—20Ah lead-acid batteries drain in ten minutes at top speed, requiring lithium upgrades for sustained output. Adding a fairing might gain you 3-4 km/h, but long-term high-speed runs aren't advisable—they demagnetize motors and fry controllers.
