What should newbies pay attention to when buying a mountain bike? What kind of good?

For beginners, it is recommended to choose a mountain bike for the first bike. Mountain biking is the most suitable option for beginners. Since mountain bikes have very low ground requirements, they can be ridden on any kind of ground, and it is not very easy to get a flat tire.

Mountain bike frames are more rugged, sturdy, and have better shock absorption, generally with fork shock absorption, and some have rear shock absorption, and the saddle is wider for higher riding comfort. Generally use a wider straight handlebar for better handling, but the drag is relatively high and the speed is relatively slow when riding.

Road bikes are more suitable for masters, not for beginners. Due to the very high road requirements for road bikes, it is possible to get a road bike tire puncture with just a few gravel pieces, and if the road is slippery, road bikes are more likely to deviate than mountain bikes, and beginners may not be able to drive such a car.

For the average person, a road bike is more suitable. Nowadays, you don't have to go to the dirt road to ride for exercise, and many of today's mountain roads are not potholes, all of them are asphalt roads. Even if it's a little broken, it's not the kind of dusty, rocky road, so just buy a road bike.

Choosing a road bike, for one thing, is not very strenuous and also plays a role in fitnessBesides, it is not every day to exercise, and it is more convenient to place. Second, there is no need for enhanced training, and there is no need to challenge your limits for fitness. Therefore, I personally think that road bikes should be the first choice for ordinary people to exercise.

Road Bike Features:

1. The tires are narrower than the tires of ordinary bicycles, and the tire pressure can reach more than 100-200psi (pounds per square inch), so the rolling resistance during driving is much smaller than that of mountain bikes.

2. The tooth ratio (i.e., the ratio of the number of teeth) between the crankset and the flywheel is very large, and the gear ratio of the general road bicycle can reach 53:11 or even higher.

3. Today's road bikes widely use new materials, such as titanium alloy, carbon fiber, high-grade aluminum alloy materials, etc., so the weight of road bikes is very light, can reach less than 5kg, but the participating vehicles stipulated by the International Federation of Self-Federation shall not be lower.

4. The tires are generally made of very hard materials, which are easy for athletes to exert force. This is very different from mountain biking. Because road bikes are ridden on roads with better conditions, there is no need to think too much about absorbing shocks like the latter.

Due to the above characteristics, the speed of riding a road bike with the same rider is much faster than riding a regular bike.

The above content reference: Encyclopedia - Highway Auto Car.

1. Selection of frame sizeXS: Bike size 13-14 inches: Generally used for riders in between.

S: Bike size 14-16 inches: Generally suitable for riders in between.

M: Bike size 16-18 inches: Generally suitable for riders in between.

l: Bike size 18-20 inches: Generally suitable for riders in between.

XL: Bike size 20-22 inches: Generally suitable for riders above the level.

2. The size of the frame is selected.

There are two more things to keep in mind when choosing a frame size, and that is the size of the handlebar and the gap between the handlebar and the crotch when standing. When standing up, the seat tube should have an appropriate amount of space between it and its crotch. To do this, you need to step back as much as you can while riding, making sure you have the top tube.

There is at least an inch of space to the crotch. The point of this step is to give the frame a wide range of adjustments, which is important to find the right saddle height.

3. The length range of the upper tube.

Shopping for a mountain bike.

, another very important factor is the top tube length. From the saddle and top tube to the handlebars, the top tube length determines the comfort of the body while riding and the speed of the ride. As long as it is within a reasonable range, you can freely adjust the saddle, stem and handlebar to adjust the riding experience of the bike that is not completely suitable for you.

An oversized frame can cause the following accidents:

1. Back pain caused by excessive stretching for a long time on a bicycle.

2. Standing because there is not enough space will make you feel pain somewhere (you know) 3. The bicycle will become difficult to control.

A frame that is too small can cause the following accidents:

1. A frame that is too small will make your legs unable to stretch, and it will be easy to get injured after riding for a long time.

2. If the distance between the crotch and the frame is too large when standing up, it will cause back injury during long-term riding.

If it's an online purchase, it may be the case you mentioned, but not in a physical store. Rest assured to buy is, as long as the body is not scratched, the rest depends on the level of the technician's shunting. The lower the level of the car, the more difficult it is to adjust. The technician is not careful, and there is still a significant difference in the cars that are transferred.

The handlebar rotates flexibly and without space, the handlebar head is well fixed, and the brake and shift lever angles are appropriate.

The front and rear wheels are installed in place, and the quick-release is tightened appropriately.

The rim does not swing or jump, the tires are installed in place, the air pressure is moderate, and the front and rear brake clearance and return are good.

Focus on whether the crankset and flywheel are deflected (low-end cars are allowed to have a little, but not too large).

The front and rear transmissions are installed in the correct position, and the limit wire is properly adjusted.

The speed change is precise, smooth and no abnormal noise.

The tail cap of each steel wire does not fall off.

The above caution is for reference.