It is undeniable that the disc brake is a trend, but only I think the round brake comes from Li.

In fact, the debate between disc brake and ring brake has been seen on mountain bikes. At present, mountain bikes are disc brakes. After 20 18, in fact, the situation of disc brakes and ring brakes for road bikes has also been made clear, and the ring brakes are bound to gradually fade out of the mainstream stage.

1.20 18, the specifications of expressway disc brakes have reached * * *, front 100, rear 142 barrel shaft, wheel centering lock (6-pin disc is also compatible with converter), paperback, support 140 and.

2. Major parts manufacturers have updated the whole line of products. Shimano released the highway disc brake kits from 105, ut to da, as well as sram and cp. For wheelsets, wheelsets of various wheelsets companies have also been released, such as enve, lw, dt swiss, cp bora and fulcrum, which have high cost performance.

3. The car factory has also updated the whole line of disc brake frames, such as Lightning, Trek, Canon Dell, Merida, cervelo, bmc, etc.

4. Practical experience: I sold both my disc brakes and replaced them with two. Several rumors must be dispelled. Disc brake Friction brake disc. Now the disc brakes are all barrel shafts, and the tolerance is very small. After assembling and debugging, you can disassemble the wheelset at will in the future, as long as you don't touch the crooked disk, you don't need to adjust it after assembling. As for the rocking disc, it was only available before, and it was quickly dismantled. Now the frame has been reinforced and shaken. B. As for the braking force, some people argue that the braking force depends on the friction between the tire and the ground, but if your brake shoe can't hold the brake ring, is this another situation? The fatal point of ring brake is that the clamp can not hold the brake ring in bad weather; C. the oil pan is easy to lock. The person who said this never used a highway disc brake. Highway disc brakes are generally 160, rear 160 or 140, and mountain bikes have 180 disc brakes. In fact, at the speed of road cars, the braking force of 160 is difficult to lock, and what's more,

At present, the price of disc brake is still high. Secondly, the weight of the disc brake is about 500 grams heavier than that of the ring brake with the same configuration.

6. The actual reason why some people insist on circular braking is 1. They have high-priced wheelsets, such as lw, which are very expensive, but they actually don't have much budget. Simply put, they can't eat sour; 2. In fact, I just want to say to these two passers-by that you don't want to change, but please don't use the keyboard to harm people and spread rumors everywhere in order to satisfy your inner thoughts.

Finally, although you can choose between circular brakes and disc brakes now, if all of them are disc brakes like mountain bikes, you have no choice, because as consumers, we can only accept it most of the time, even if it is not good, unless you can make it yourself. It is like a computer screen, which used to be 4:3, and then appeared in 16: 10. Everyone knows that the 4:3 diagonal has the largest area, but that's what I just said. Consumers can only accept it and have no choice, unless you are willing to use your own 4:3 screen of 10 years ago.