Q: Just starting a mountain bike is 24 speed, the first 3 after 8 is, what kind of gear is faster under the ordinary road, is there such a long time stall will not affect the car? What kind of gear is suitable for high speed riding on a flat road that rides for 30 kilometers? For example, if I occasionally ride a 30-kilometre ride, if I have a problem with the first three after the 8? Because I always feel that 2.7 is not particularly fast, and what is the appropriate parking stall? Then, will the next long-term ride after 3 3 (flat road) affect the foot?
Answer: 1. Under normal circumstances, the front plate is used 2 block. The rear of the flywheel is 5, 6, 7 (do not use the maximum). In other words, in most cases, it is a combination of 2--5, 6, and 7. Here's the 'general situation' means: starting, riding generally, riding at a maximum speed of 25-30. This is good (later to speak).
2. In case of uphill, the flywheel can be downshifted. Depending on the size of the slope, it becomes a combination of 2--4, 3,2,1.
3. If you want to pull a high speed on a flat road, raise the rear of the flywheel and reach a 2--8 combination. At this time, the speed is generally up to 30-35. For faster competition, then add the front sprocket to achieve the highest combination of 3--8! At this time, in the case of a certain cadence, the speed reaches the fastest, generally 35-40 can be achieved. If you want to slow down, you should first reduce the sprocket to 2--8; then reduce the flywheel to 2--5, 6, and 7.
4. The 1st gear of the tooth plate, unless it is uphill, is generally not used.
note:
Advocating a common combination of 2--5, 6, and 7 is good.
One is to reduce the burden on the flywheel. It should be noted that improper operation will affect the service life of the bicycle transmission system. Often, a combination of large output ratios, such as the combination of 2--8, 3--8, will make the smallest flywheel and The largest sprocket wheel accelerates wear. If you don't play for a long time, you will change your flywheel and you will regret it.
The second is to ease the resistance at the start. Convenient, faster and easier start.
The third is to protect your knees! Using only a combination of 2--8, 3--8 for a long period of time can cause the knee to be in a state of tension and exertion for a long time. I can guarantee that if this goes on, your knee will be wasted for two years! Can not be ignored.
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 match speed! If you want to ride faster than anyone else, then you don't need a mountain bike. Riding a road bike will get a higher speed. However, the adaptability of road vehicles to slopes and mountains is not at all a grade. Do you see that there are several mountain bike rides in the Tour de France? But who uses a road bike offroad? Therefore, different cars are originally designed for different purposes. Not knowing how to change gears correctly is a costly, time-consuming, time-consuming and thankless process. . Many times I saw some outfits for student cars, waiting for the red light, still using the maximum transmission ratio, and even having to stand up and step on a bicycle, is it cool? - Only feel silly. Do not understand the true meaning of mountain bikes. Starting like that will only cost you more cars and hurt your knees. At the same time, it will take a long time to slow down and reduce road safety. .
Really skilled mountain bikers will be skilled at changing gears based on road conditions. The road is flat, and if it is faster, it will be upshifted; the road conditions are complex and the speed is slow. Even if it is necessary to stop and start again, it is necessary to reduce the speed in advance. Waiting for the red light, it is still very easy to start and accelerate. This is the most correct and safest and most labor-saving method. . . The shift can be very frequent and skilled, and skilled players change the gear even every 2 seconds. This requires you to practice for a long time.
True mountain bikers usually do not pursue the momentary speed, but try to keep their cadences. No matter what kind of road conditions, they can change their gears and keep their cadence at the best of 90 times per minute. Do not feel too tired and do not feel too easy on the basis of a stall to achieve this frequency is the optimal use of the transmission system! In this optimal state, the most comfortable cadence can be successfully completed long-distance riding hundreds of kilometers.
You say, 'Feeling 2.7 isn't particularly fast'. Now you should understand that 2--7 wasn't the fastest output combination since this gear is designed for normal/medium speed riding. It is also the most labor-saving and wear-resistant stall. If you are pursuing speed, please use a 3--8 gear when your physical strength and speed are pulled to 30-35 under the right road conditions (not long duration, you can practice lengthening slowly).
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