1. In general, the second gear is used for the front gear plate, that is, the middle gear of the gear plate. Then shift the flywheel to 5, 6 and 7 (but do not use the maximum gear). In other words, in most cases, the matching is a combination of 2-5, 6 and 7. The "general situation" here refers to starting, general riding, and riding with a maximum speed of 25-30 hours.
2. When going uphill, the flywheel can be downshifted According to the gradient, it can be changed into a combination of 2-4,3,2,1.
3. On a flat road, if you want to pull the high speed, lift the rear flywheel first Reach a combination of 2-8. At this time, the speed can generally reach 30-35 per hour If you want to compete faster, add the front tooth plate to reach the highest combination of 3-8! At this time, when the stepping frequency is certain, the speed can reach the fastest, generally 35-40 per hour. At this time, if you want to slow down, you should first reduce the tooth disc to 2-8; Then reduce the flywheel to 2-5, 6 and 7.
4. Gear 1 of the dental disc is generally unavailable unless you go up the mountain.
be careful:
The common combination of suggestions 2-5, 6 and 7 is beneficial.
First, reduce the burden of the flywheel. You should know that improper operation will affect the service life of the bicycle transmission system. Often use the combination of large output ratio, such as the combination of 2-8 and 3-8, which will accelerate the wear of the smallest flywheel and the largest tooth disc. When I let you change the flywheel before long, you'll regret it.
Second, reduce the resistance at the start. Convenient, faster and easier start.
Third, protect your knees! If you only use the combination of 2-8 and 3-8 for a long time, your knee will be in a state of tension and force for a long time. I can guarantee that if you go on like this, your knee will be useless in less than two years! We must pay attention to it.
In fact, the purpose of designing so many gears for mountain bikes is to let you choose the most appropriate gear according to different road conditions and physical fitness. Mountain bikes are not simply designed to race speed! If you want to ride faster than anyone else, you don't need a mountain bike. You can get higher speed by riding a road bike. However, the adaptability of road vehicles to slopes and mountains is not a grade at all. How many mountain bikers do you see around France? But who uses off-road vehicles? Therefore, different cars are designed for different purposes. Not knowing how to change gears correctly is a car consuming, laborious, time-consuming and thankless process. Many times I see some student cars. After waiting for the red light, I still use the maximum transmission ratio. I even need to stand up and ride a bike. Is it cool—— I just feel stupid. I don't understand the essence of mountain biking at all. Starting like that will only cost more cars and damage the knee. At the same time, it will start slowly and take a long time, reducing road safety.
Truly skilled mountain bike riders will skillfully change gears according to road conditions. The road is flat and the speed is fast. When you get up, you have to upshift; When the road conditions are complex and the speed is slow, and it is even necessary to stop and restart, it is necessary to downshift in advance. After waiting for the red light, you can still start and accelerate easily, which is the most correct, safest and labor-saving way. Gear changes can be frequent and skilled, and skilled players even change gears every 2 seconds. This requires you to practice for a long time.
Real mountain bike athletes usually do not pursue a temporary speed, but try to maintain their pedal frequency. No matter what road conditions, it is best to keep their pedal frequency at about 90 times per minute by changing gears, so that they can achieve this frequency with a certain gear on the basis of not feeling too tired and not too relaxed, which is the optimal use effect of the transmission system! With this best state and the most comfortable stepping frequency, we can successfully complete the cycling with a long distance of hundreds of kilometers.
You said, 'I don't think 2-7 is very fast'. Now you should understand that 2-7 is not the fastest output combination, because this gear is designed for ordinary road / medium speed riding. It is also the most labor-saving and least worn gear. If you want to pursue speed, please use the gear of 3-8 when your physical strength and speed reach the speed of 30-35 per hour under appropriate road conditions (the duration should not be too long, you can practice and lengthen it slowly).