Bicycle gearbox system, by changing the chain and different front and rear size of the gear disc to change the speed.
The size of the front disk and the size of the back disk determine the force of the bicycle's spinning pedal. The bigger the front chainring, the smaller the back chainring, the more effort you feel when pedaling. The smaller the front chainring, the larger the rear chainring, the more relaxed the pedal. According to the ability of different riders, the speed of the bicycle can be adjusted by adjusting the size of the front and rear gear disc, or to cope with different sections and road conditions.
Number of segments
Variable speed bikes come in 18, 21, 24, 27, 30 segments. Those with more segments are usually more expensive and better suited to a variety of road conditions.
General bicycle speed change refers to the so-called several sections of speed change refers to the 'front chainring number x after fly wheel tooth number', mountain bike is usually the first 3 plates, after the flywheel six, seven, eight, nine, ten speed, multiplied up is 18, 21, 24, 27, 30 sections of speed change. The road car is special. It only has 14,16,18,20,22 segments
Tooth ratio
Bicycle gear change system "gear ratio = front plate teeth/rear flywheel teeth", basically the function of bicycle gear and chain transmission system is to "convert the energy (horsepower) of the rider into the torque of the tire".
"Speed" is determined by the maximum tooth ratio (the largest tooth of the front plate corresponds to the smallest tooth of the rear flywheel). In the same number of stomping rotation, the larger the tooth ratio, the faster the speed. For example, the maximum tooth ratio of a 27-speed mountain bike is "44T in the front, 11T in the back, and the tooth ratio = 4". When a rider steps on a wheel, he will turn 4 times. The speed is the fastest but the torque of the wheel is the minimum.
"Climbing" with the minimum tooth ratio (the front plate minimum tooth corresponding to the rear flywheel maximum tooth), climbing, riders not only to maintain the car forward, but also to rise height, at this time need to increase torque, under the premise of maintaining the same number of pedaling rotation, reduce the tooth ratio to improve tire torque, for example, the general 27 speed mountain bike minimum tooth ratio is "22T, 34T," Tooth ratio = 0.65". It takes the rider one turn of the wheel to turn 0.65, so the rider's energy is converted into torque to lift the car up the hill.
Note that when the road is slippery, high torque will lead to tire skid, that is, when the torque is greater than the friction force on the ground, it can not move forward, in addition, high torque climbing may also tilt the solitary wheel.
Tooth drop
In addition to the tooth ratio, another worth exploring is the tooth number of the drop. Often heard "teeth than dense" refers to the number of teeth drop small. The gear drop means the difference between the driver's output and tire torque when changing gear. If the difference is too large, it may suddenly become too heavy or too light, resulting in an indefinite number of turns. For the driver, suddenly too important, suddenly too hard, suddenly too light can lead to the feeling of tripping, both of which can hurt the knee and affect handling.
Part grade
Interestingly, because parts with more segments are usually more expensive, manufacturers often improve the material or quality of components, calling for "more efficient transmission", "smoother operation", "more durable" and "more beautiful" to make consumers more willing to pay the price.
The bicycle speed change system sold on the market, the market is one, two, three disc three, flywheel is complicated, from the entry of five, six speed to the advanced level of seven, eight speed and professional nine, ten speed, the number of segments usually means that you can have a higher highest tooth ratio, lower lowest tooth ratio and smaller tooth drop, so can deal with the road conditions naturally more. In the parts mechanism, the eight speed flywheel upgrade to nine speed and ten speed can be used in the original flower drum, seven speed below the flywheel upgrade needs to change the flower drum more. On the bicycle, the flower drum is combined with the wheel set. Changing the flower drum is equivalent to changing the wheel set.
Function of transmission
The bicycle's transmission, a combination of front 3 - and rear 9 - gear discs, can be changed up to 27. Here, take mountain bikes as an example.
When the pedal is spun, the front teeth spiral and transfer the force through the chain to the rear teeth, and the wheel moves forward. The size of the front disk (number of teeth) and the size of the back disk (number of teeth) determine the force of the pedaling.
The larger the front disc, the smaller the back disc, the more effort you feel when pedaling (the longer distance you travel).
The smaller the front disc, the larger the rear disc, and the easier it is to pedal (the shorter the distance the bike travels).
Bicycle riding is starting, stopping, uphill, downhill, windward, downwind and so on. If you can maintain a certain speed under any conditions (if a bicycle is going fast or slow, it can maintain a certain pedaling speed and torque, you need a transmission.
If you don't push yourself hard, just push the gears to ride fast, it's impossible. You find that out pretty quickly when you're actually riding. When the gear ratio is increased (high torque, low spin) to ride, the most appropriate ride (the combination of torque and spin that emits the most appropriate energy) is not achieved. This will increase the burden on the knee and become a cause of various disorders. (Note: it is best to go at a constant speed during the ride. Fast and slow is a pain to the knees. Don't care about the short time, the long time will appear all kinds of problems)
The bicycle gearbox system is a relatively new technology that has been gaining popularity among cyclists around the world. This new system allows for smoother gear transitions, more versatile gearing options, and an overall more efficient and enjoyable cycling experience. In this article, we will explore the advantages of bicycle gearbox systems and why they are becoming an increasingly popular choice for cyclists.
First, it is important to understand what a bicycle gearbox system is. Traditionally, bicycles have used derailleurs to shift gears. A derailleur is a mechanism that moves the chain between different gears. However, this system can be problematic. Derailleurs are often prone to misalignment, which can result in poor shifting and chain skips. Additionally, derailleurs can be difficult to adjust and maintain. This is where gearbox systems come in.
A bicycle gearbox system replaces the traditional derailleur with a gear hub, which is a sealed unit that contains multiple gears. The gear hub is located at the center of the wheel and is connected to the pedals and chain. The system is controlled by a shifter, which allows the rider to switch between gears. Because the gears are enclosed in the hub, they are protected from the elements and require less maintenance than traditional derailleurs.
One of the main advantages of a bicycle gearbox system is its versatility. Traditional derailleurs have a limited number of gears, which can limit a cyclist's ability to tackle steep hills or ride at high speeds. With a gearbox system, there are typically more gears available, and the gear ratios can be customized to fit the cyclist's specific needs. This means that a cyclist can have a more comfortable and efficient ride, regardless of the terrain or conditions.
Another advantage of a bicycle gearbox system is its ability to provide smoother gear transitions. Because the gears are enclosed in the hub, there is less chance of misalignment, which means that shifting is more precise and consistent. This can result in less chain skipping and a more pleasant riding experience overall.
Finally, a bicycle gearbox system is also more durable than traditional derailleurs. Because the gears are sealed within the hub, they are protected from the elements, which can help prevent rust and corrosion. Additionally, because the system requires less maintenance, it can be less prone to wear and tear and can last longer than traditional derailleurs.
In conclusion, the bicycle gearbox system is a new technology that is changing the way we ride bicycles. With its versatility, smoother gear transitions, and improved durability, it is becoming an increasingly popular choice for cyclists around the world. Whether you are a casual cyclist or a competitive racer, a gearbox system can provide a more enjoyable and efficient riding experience.