adjustable speed electric mountain bike

The power of the electric mountain bike's motor is controllable, and on most bikes, the switch is located near the handlebar, and the control computer is located in the center of the handlebar. You can adjust the motor auxiliary power, from zero to full power, usually 250W to 350W. For reference, 250W is equivalent to the average power of an experienced amateur rider riding an electric bicycle for one hour, and 350W is professional level.
How much power is used is related to the working time of the motor. For example, a single charge can support 15 miles of maximum power. When using the economy mode, it can support 127 miles, and the usual setting can use 20-40 miles. Using a motor drive will increase the wear and tear of the transmission, so a special electric mountain bike kit is required. electric mountain bikes now have very reliable "stop-and-go" devices that call on your muscle power and motor power.