How fast can a 12-tube controller run?
2 Answers
12-tube controllers can run at 40 km/h. Below is the relevant introduction: Controller: A controller (English name: controller) refers to a command device that changes the wiring of the main circuit or control circuit and adjusts the resistance value in the circuit according to a predetermined sequence to control the motor's start, speed regulation, braking, and reverse operation. It consists of a program counter, instruction register, instruction decoder, timing generator, and operation controller. It serves as the "decision-making body" that issues commands, coordinating and directing the operations of the entire computer system. Electromagnetic chuck controller: The AC voltage of 380V is stepped down by a transformer, then converted into 110V DC by a rectifier, and enters the chuck through the control device, magnetizing the chuck. During demagnetization, a reverse voltage circuit is applied, enabling the controller to achieve the demagnetization function.
Last time I tested several 12-tube controllers from different brands and found that the actual speed depends on the combination of battery voltage and motor power. With a 1200W motor, a 72V lead-acid battery can typically sustain 45-48km/h. If you overvolt with an 84V ternary lithium battery, reaching 55km/h isn’t uncommon. However, controller overheating is a critical issue to monitor—continuous uphill riding for over ten minutes may trigger thermal protection and automatic speed reduction. For modifications, it’s highly recommended to upgrade to 6mm² silicone wires, as the stock 4mm² wires can get hot at the terminals after just half an hour of high-speed riding. Also, remember to install a voltmeter to monitor voltage drop in real-time; if the voltage drops by more than 3V under full throttle, it’s time to replace the wiring.
