Author: Controlling
This article is divided into four paragraphs. You can skip the first two paragraphs and look at them from the third paragraph
1. Background
Before you start with the car, I thought about writing a manuscript. I originally wanted to drag it out, but for the sake of it. . . Let’s write it first
As I have repeatedly emphasized, I am a person who is very confused about buying things, especially when buying electrical appliances. I will definitely understand it repeatedly. Finally, according to the rigid needs, arrange and combine the products on the market and select a product that is relatively most in line with the requirements.
However, I didn’t buy this car, please let me show it out gently. Anyway, someone pays the bill, not the opposite sex.
Due to various reasons, I am a person who is particularly prone to injuries, especially those who have legs and feet. For example, walking on the road, stepping on stones, sneakers, and spraining ankle. For example, go take a shower, slide it and hit the ground with your knees. So, for a year, maybe 10 months, my feet hurt, so I hate walking and I can’t walk well.
2. Imagine the
transportation tool, which requires a transportation function of a few kilometers, not for long-distance driving, but mainly for going to the bus stop, entering the subway station, etc. There is always a little distance that makes you feel that buying a car is not practical and you are a little tired of walking. The bolder people are, the more productive the land is. In order to cater to the changes of the times and human needs, electric transportation tools came into being.
The first time I felt the role of transportation tools was through a video. About 2 years ago, it was just a prototype of the project at that time, and it was not actually produced. As shown in the picture below (please let me satisfy my desire to draw. Although it is ugly, I still draw the key points)
At that time, I just thought that my god, there are things, which is really convenient and meets my needs.
However, at that time, I was short of money and was not so disgusted with walking, so I didn’t go to search for information too much.
In the past two years, I have been walking less and less by mistake. God knows how much I want to have an electric wheelchair, but it is not good to have a wheelchair at a young age.
Until one day, a package arrived at my house and opened it to see it. The following figure is
Yes, it is a very popular wheelbarrow. Going on the road will make people feel cool and cheerful.
However, it seems that the cool equipment is harder to learn.
The whole vehicle weighs more than 30 kilograms. Imagine that things worth more than 30 kilograms are all coordinated by legs. It is difficult for people like me to be unstable in the lowering. And there is no logistics brake, my mother strongly opposes me to use it. Only return the product.
At this time, I began to really pay attention to transportation tools.
. Hardware A transportation tool mainly consists of: frame, motor, battery, tire
frame or model: determines the direction you need. Whether it is an electric unicycle, electric flatbed or electric scooter, it is necessary to consider portability and practicality, and make the initial judgment based on actual needs.
wheelbarrow, with a small footprint and a weight of 20-30 catties, mainly relying on leg strength and lacking physical brakes. (The danger will be mentioned later)
flatbed car: I gave it the name because the frame looks like a flatbed, which I always call it. Car weights of about 10 kilograms are the mainstream. The car is light and has extremely portable and maneuverable. The tires are too small, which is the main defect.
electric scooter: occupies a relatively largest area, and even if it is folded, it still has a certain length. Depending on the frame material such as carbon fiber, aerospace magnesium aluminum alloy, aluminum alloy and other main materials, the vehicle weight can range from 8 catties to 40 catties.
According to my actual test, 30 kilograms can generally be moved, but it cannot last long and can not move for more than 5 minutes. If you want to feel the weight, go and carry the rice or oil from your home.
Motor: The heart of electric vehicles, the importance of it is naturally self-evident.
mainly uses a hub-type motor, that is, the motor is wrapped in the rear wheel hub (a few models use front wheel hubs) to directly drive the vehicle to run. The motor mainly includes four types: brushed, teeth (with carbon brush + gear), brushless, teeth (with carbon brush without gear), brushless, teeth (without carbon brush and gear), brushless, teeth (without carbon brush and gear), and brushless, teethless.
, I am a liberal arts student, my physics is very bad, I feel a headache when I see these. Anyway, most cars are brushless, and brushless and toothless motors are more mainstream.The reason is simple: low cost, maintenance-free, and simple process structure.
The main difference between each car is output, which should be called output. There is a difference in this thing.
depends on the product parameters. Currently, the main motors for portable electric vehicles on the market are 180W, 250W, 350W, etc. The larger the motor, the faster the speed, the stronger the horsepower, and of course, the greater the power consumption.
battery: the source of power.
basically does not consider lead-acid batteries, mainly lithium batteries.
lithium battery is highly reusable, mainly 18650 models, so as to achieve compactness. Batteries are divided into domestic and imported. Imports are mainly Samsung, LG, etc. Here, we will not discuss whether any manufacturers claim to use imported batteries, but actually use domestic ones.
Generally speaking, imported batteries have better quality, stable and expensive.
tires: pneumatic tire, vacuum tire, solid tire.
pneumatic tire: has a certain shock absorption effect, but may have a tire blowout and requires subsequent maintenance.
Vacuum tire: no need to inflate it, it has shock absorption effect, and is expensive.
Solid tire: solid, no tire blowout, no air injection, no shock absorption.
Most scooters use 8-inch tires. Before, I thought that there should be 8-inch tires, and the difference between inflatable tires and solid tires should not be much. As it turns out, the gap is still quite large. Since the rear wheels of my car are solid tires, every time I encounter small pits or something, I feel a solid vibration. Considering that I have added seats, the seats also have certain shock absorption effects. The solid fetus is really shocking.
shock absorption gives you a sour feeling.
I don’t have an in-depth understanding of various front shock absorption, rear shock absorption, suspension shock absorption, hydraulic shock absorption, etc., and I don’t have that many cars on hand, so I can’t have an intuitive feeling. But considering the reason why the car is so big, so close to the ground, and the weight is more important. For those cars with smaller tires than 8-inch tires and more solid, I deeply doubt whether it can really absorb shocks. Not to mention the magical shock absorption system, it is so big, it is there.
Anyway, in a word, shock absorption is not good, and it will make you ecstatic every minute.
brakes, life guarantee.
has not conducted in-depth research on what disc brake drum brake electronic brake. Rear brakes are important based on years of experience in bicycles. The wheelbarrow has no physical brakes, which is the main reason why my mother resists it. There has been news reports that someone used a balance bike and suddenly lost power, flew out, and was injured. This is not the reason for the brakes, but because the wheelbarrow is controlled by the legs and the center of gravity of the body, once it is on the road, there are many accidents that are difficult to control, and the probability of injury is high. Maybe some people can practice their cars very well, maybe some people will say that it is just such a big car and you can jump off at any time. I have always cherished my life and safety is the first priority. It is good to play with a wheelbarrow in a small range, but it is better to go on the road.
4. The actual test
has comprehensively considered the price and performance reasons, and I bought the following car. Price of 2200, imported LG battery, 25KM battery life, 36v350w motor, front shock absorption, 8-inch pneumatic tire on the front wheel, solid tire on the rear wheel, no shock absorption. It comes with front and rear lights and also has a seat.
model here looks like Volkswagen. I feel that the whole vehicle is quite sturdy and the material is very hard. The handlebar can be folded with one click.
frame folding has twisted parts, fixed parts, and safety points. I don't really understand the welding of
.
Tires are 8 inch inflatable and have double spring shock absorption on the front.
body length is one meter long, and it would be great if the length of a seat can be shortened. Long length means you can take people and stand in the car with multiple different friends without any pressure.
charging port is a three-hole needle type, fully charged for about 3-4 hours.
0 seats are foldable.
parking station foot is short and small, and it seems to be practical at the moment, but I don’t know if there will be any problems after the days are long.
There is a thickened part below the front side of the skateboard, so that the bottom plate will not be damaged when folded.
is integrated under the board, and there is a sponge sandwiched at the top of the board, so that water will not be easily injected and protect the battery.
The end of the handle is a spherical shape, with a good grip, a straight and easy to slip, and is tired.
speed from 0-35KM/H. Cruise speed can be set. You need to slide the car first before the motor can start, which can avoid the impact caused by sudden start.
brakes are electronic brake + drum brake. When brake, people are a little unstable, and squat down slightly or sit down can relieve it. The same is true for shock absorption, and the vibration feeling when standing is slightly stronger.
0 has strong climbing ability and can rush up in one breath. Angle not measured.
The lighting function of the headlight is not strong, and you can add a flashlight to enhance the lighting function.
carried on the bus without folding, without any obstacles.
promotes the mall without obstacles.
bakery is accessible, free of barriers.
Enter the subway? I didn't go in, but I've consulted. The subway can be brought in with less than 1.6 meters and less than 30 kilograms. There is no problem according to this standard. But who knows what kind of security inspector you will encounter when you go through security checks. Prepare a small bag, fold it and bring it in, and it shouldn't be blocked.
does not necessarily mean you can enter anywhere without folding, but there should be no problem if you fold. After the first full charge,
turned on 34km, showing that there was still one grid left.
Night-time video, because one hand controls and one hand takes a mobile phone to shoot, the speed remains below 10KM/H. The motor sound is quite obvious.
car purchase advice: The car weighs more than 10 kilograms. A car that is too light will not be stable enough and cannot absorb enough earthly energy to make you feel at ease.
motor, buy according to the weight of the car. If you want to be too powerful, don’t have too much power. If you want to be arrogant and increase the speed, the safety will be too low.
battery, this is not easy to recommend, I personally prefer imported batteries.
tires are a matter of opinion. When the tires are large, they will be heavy and occupy space. For some cars that focus on super portability, they are all small wheels. Then the shock absorption problem is particularly serious. However, if the pavement quality in your city is good, you can consider it.
Personal thoughts: With a portable car, my mobility has increased and I am willing to go out. My friend will ride a bike while walking. I have the freedom to go wherever I want, and I have a ride in the park. I like my car very much. Although some people say that it is not good-looking when I stick it, I like it. I am often consulted about battery life and price, and I am happy to inform you.
Speaking of which, a girl asked me how much it cost, and then said that she bought more than 900 units in Shanghai, with a nominal battery life of 25KM and a lithium battery. My heart suddenly burst into tears. What do you mean, is it expensive for me to buy it? In fact, according to the price in some master modification posts, a good frame costs about 500, the motor plus rear wheels is 300-500, the battery pack is 300-500, and other fragments, the cost price is here. It's too cheap, okay?
is OK. After finishing writing, I don’t even have such a good intention to write the paper. I would like to add some essence (gold)! ! ! If a friend who passes by, if he thinks that what he wrote is still good, please give me a reward. After writing for several hours, his neck is sore.
Attachment:
Light scooter
This is a crowdfunded model. It is very small and light after folding. It can be considered in cities with good road conditions.
can be put into the small parallel car in the bag - JD.com crowdfunding
This is a flatbed car that is already being made. It is light, portable, and has no physical objects. It is deeply doubted about the shock absorption effect. Likewise, cities with extremely good road conditions can be considered.
electric scooter_Taobao search for the world of
electric scooter.
