Simple decision every morning let’s start more running before running, let’s start our day with a healthy day, let people choose a day’s exercise every morning, what should it be like to know?

MOTOR TYPE

Common electric assist systems are divided into mid-mounted motors and hub motors according to the motor position.

In electric mountain bikes, a mid-mounted motor layout with a lower center of gravity is usually used to obtain a centered and reasonable weight distribution, without affecting the balance of the vehicle under fast driving to obtain good handling. In addition, the auxiliary power of the central motor acts directly on the central axle, and the clutch transmission gear is often used inside, which can automatically cut off the connection between the motor and the transmission system when not pedaling or when the battery is dead, so it will not cause additional resistance.

On the urban commuter car, the bicycle will not be manipulated too much, the road conditions are not as complicated as in the mountains and forests, and the climbing demand will not be so great, so the rear hub motor like the H700 system is equally effective.

In addition, the advantage of the wheel hub motor is that it does not change the original frame center axle five-way structure, and does not need to open a special frame for the mold. It can achieve a nearly similar appearance to the original bicycle, which is also one of the important factors for the selection of the in-wheel motor system for the international big-name medium-electric road bike.

In general, there is no difference between in-wheel motors and mid-mounted motors, and there is no difference between who is absolutely good and who is bad. Don’t use the wrong vision of “low-end cars use in-wheel motors” and “high-end cars use mid-mounted motors”. To help products, install a reasonable motor system in the right product is not simply the choice of the motor, but also requires a complete set of solutions. The vehicle manufacturer and the motor system manufacturer can make excellent products with in-depth coordination and testing.

TORQUE

As far as the riding environment is concerned, electric-assisted mountain bikes require the motor to have a higher torque output. Usually, a torque sensor is used to accurately detect the pedal torque, so as to understand the rider’s intention, and even at a low cadence, it can be more easily Ascent on steep and complex off-road climbs.

Therefore, the torque output of an electric mountain bike motor is usually between 60Nm and 85Nm. The M600 drive system has a rated power of 500W and a torque output of up to 120Nm, which can always maintain strong power in mountain biking.

The electric power assist system designed for highways pays more attention to the smooth performance of pedaling rhythm and the smooth and progressive performance of motor assistance, because there will be differences in the adjustment of power, and smooth pedaling under high-speed cruise does not require excessive power intervention, so Motor torque output is generally not too large. The Bafang M820 mid-mounted electric assist system specially developed for road vehicles, the motor weighs only 2.3 kg, but can output a rated power of 250W and a maximum output torque of 75N.m. The Bafang H700 in-wheel motor has a torque of 32Nm, which can easily ensure the strong performance of the rider in daily commuting and leisure use.

If you want to ride an electric booster for a walk-and-go trip, the higher the total weight of the vehicle when it is fully loaded, the more difficult it is to maintain continuous power output when climbing, and the greater the demand for torque.

In addition, it does not mean that the larger the torque, the better. Excessive torque output will reduce the effort of human pedaling, and it will become more difficult to control on bumpy roads. When the motor has been outputting 300% auxiliary power, it is too easy. The ride is inevitably boring.

METER

A high-definition color display can clearly display motor-related data, including the percentage of remaining battery power, riding distance, altitude, sports mode and current speed and other rich information, which can meet our daily outings and leisure riding. Of course, our requirements for instruments are naturally different in different riding scenarios. The road conditions of mountain biking are complex, and it has gradually changed from a large-screen instrument to an integrated instrument.

In the new generation of electric-assisted commuter vehicles under the trend of intelligent electronics, simple and easy-to-use embedded instruments are becoming the trend of mid-to-high-end vehicles. The instrument buttons embedded in the upper tube only indicate the battery level and gear position through the color of the light. and other information, which greatly simplifies the display information of electric assist, while the simple appearance and comfortable and linear auxiliary power refresh the riding experience of urban commuting outings.

 
BATTERY CAPACITY

The largest proportion of the weight of an electric bicycle is undoubtedly the battery. The battery has experienced a rough and savage plug-in and slowly transitioned to a restrained and concise embedded direction. The battery embedded in the down tube is a common installation method for electric assist. A further solution will completely hide the battery in the frame. The structure is stable and the appearance is more concise and clean, while reducing the weight of the vehicle.

Long-distance vehicles require longer battery life, while full-suspension mountain bikes are more concerned with powerful power output. These require large-capacity battery support, but larger and heavier batteries will take up more space and require more energy. High frame strength, so the weight of these types of electric vehicles is often not too light. 750Wh and 900Wh batteries are becoming new benchmarks for this type of vehicle.

Road, commuter, city and other models pursue a balance between performance and lightweight, and will not blindly increase the battery. 400Wh-500Wh is a common battery capacity, and the battery life can usually reach about 70-90 kilometers.

You already know the basics of motor, performance, battery capacity, instrumentation, etc., so you can choose a suitable electric bicycle according to your daily riding needs!