1. Regarding the motor scooter motors are basically produced in Changzhou, China, and the scooters in the industry do not use the so-called Bosch motor manufacturers, and all use domestic motors. For the scooter product, there is actually no need to use Bosch motors. A better-designed domestic motor is completely sufficient. The price that users pay for pursuing the so-called doctoral motor is not cost-effective. Of course, the domestic motors are not good and bad, and the bad ones are really bad. The direct harm is the impact on the battery life, the motor is overheated and burned.

2. Regarding battery life, it is only in terms of hardware and software, excluding the factors of the user and the use environment. Four key points affecting battery life: battery capacity, motor power, motor control method, and tires.

109T Off Road 3200W Dual Drive High Speed Electric Scooter

1) Battery: The battery has the greatest impact on battery life. It is strongly recommended to purchase a scooter using imported batteries. One is that the battery conversion rate and energy density are higher, that is, the imported batteries have a larger capacity under the same volume and weight. At present, the single-cell capacity of domestic batteries is 2000 or 2200, and the single-cell capacity of imported batteries is 2600 or 3200, which is equivalent to 30% more battery life. Second, safety is guaranteed. At present, there are too many examples of spontaneous combustion and explosion of scooter balance scooter products, all caused by the use of inferior batteries.

2) Motor power: The larger the power, the better, too much waste, too small is not enough. At the same time, the power selection of the hub motor is also related to the wheel diameter, speed, and torque. Take a scooter with an 8-inch wheel diameter as an example. The motor power can be in the range of 250W~350W. Each motor has an optimal power range. This is related to the output curve of the motor. The output power of the general cruising speed is just in this optimal range. Inside.

3) Motor control method: The two current control methods, square wave control and sine wave control, have their own advantages and disadvantages. Personally like Xuanbo control, comfortable control, linear acceleration, high cost, low power consumption and low sound. Square wave control is simple and rude, cheap and stable, accelerating in a straight line, starting rush, cruising and saving power. In general, it is recommended to adopt the products of Xuanbo control. A good Xuanbo control product has higher requirements for the technical capabilities of the enterprise and pays more attention to the use experience. The overall energy utilization efficiency is 5 to 7% higher than that of the square wave control. How to distinguish sine wave and square wave control? Sine wave control is to turn the handle slightly under no load. At this time, the motor starts softly and smoothly, and continues to accelerate to the highest speed. Under load, it starts softly and does not rush, and there is no abnormal noise, quiet and comfortable; while the square wave controller is quiet and comfortable. When the handle is turned a little under load, the motor will accelerate a little. Under load, there will be huge noise when starting, and the start will be more aggressive, which is not suitable for manipulation.

4) Tires: The driving wheel has a high friction force, and the driven wheel has a low friction force, which results in high endurance, and vice versa. At present, most of the nominal battery life in the industry are falsely high, with a lot of moisture, and a few are credible or close to the nominal value. However, the battery life is affected by personal riding habits and the environment, and the measured data is almost different for everyone. During RND crowdfunding, we rated the battery life according to the ideal test state, and the result was horribly scolded. Later, we would write a lower value and write a value that the user can reach regardless of the ride, or we would not write it, only highlight the battery capacity.

3. Regarding speed, I strongly urge everyone not to blindly pursue high speed. The scooter itself is not a product suitable for pursuit of speed. The wheel diameter is small, the control response time is short, and the braking distance is long. Under the premise of ensuring safety, it is recommended that the maximum speed should not exceed 25km/h, and the limit should not exceed 30km/h. 30km/h is already a very dangerous speed. I have tested various bicycles all the year round, and I have fallen into pits, speed bumps, small rocks, 6-inch BMX, 8-inch & 10-inch large-wheeled vehicles even though I am quite skilled in riding. Because scooters are inherently not suitable for the pursuit of speed, unless the road conditions are perfect to zero defects, otherwise no matter how high riding skills can not cope with many emergencies. In addition, it is easy for companies to release the speed limit. Choose a low-torque and high-speed motor, which is directly controlled by a square wave. It does not require much power to ensure that you can fly as soon as you ride.

4. Regarding the tire market, the mainstream is two-wheel design, some three-wheel design (front three wheels or rear three wheels), two-wheel design is recommended, which is flexible, safer in turning, cheap and reliable (less wheels and suspension structure price) , Lightweight and compact. I can’t think of any benefit in three rounds. The wheel diameters are 4.5, 6, 8, 10, 11.5 inches, and the common ones are 6, 8, 10 inches. It is recommended to choose large wheel diameters, such as 8 inches and 10 inches, which have high safety passing and good steering. Because the smaller the wheel, the easier it is to fall when turning. There are 4 types of tires at the same time, solid tire, honeycomb solid tire, tube-type pneumatic tire, tubeless tire (tubeless pneumatic tire). It is not recommended to choose pneumatic tires for small wheel diameters. It is too easy to puncture. It is recommended to choose pneumatic tires for 8 inches and above. The shock absorber through pneumatic tires does not require additional mechanical shock absorbers. One point to note here is that pneumatic tires must be selected. The width is more than 40, don’t choose too narrow.

5. Regarding the weight for boys, the weight should not exceed 12kg, and for girls, it is best to be within 10kg. This way, you can climb 3 to 5 floors and get out of the subway. It seems that the difference is not big, but every kilogram more, the body The feeling is different. At present, our 10-inch car has a nominal range of 20km (the actual range is between 25 and 30km), and its weight is controlled at 10.7kg.

6. With regard to folding, there are two popular folding methods, one is column folding, and the other is folding front of the pedal. Column folding is recommended, because the force on the column position is smaller than that of the pedal. Lighter structural materials can be used to meet the folding requirements, and the wheel position will not change after folding, and it can be placed on the ground normally.

7. Removable batteries Generally, a conventional battery pack is 20 cells per pack. The weight of a single cell is about 50g, and the total weight is more than 1kg. Every day I go out with a brick of 1kg on my back. It feels a bit silly to think about it. If you need a long battery life, just buy a product with a long battery life. It’s really impossible to go directly to a motorcycle or an electric car. After all, a scooter is still a short-distance transportation tool.