Riding a flywheel problem, mountain bike for a flywheel problem

The number of teeth of the 10-speed is basically the same as that of the 9-speed, and it is not said that the smallest gear is smaller than the 9-speed, but generally the largest gear of the 11t is only 34t or 32t, which is the same as the 9-speed.

Compared with the 9-speed, the 10 has one more gear, so the speed change is more delicate, and the gear between the gears is smoother, and it will not feel abrupt because of the large change in the number of teeth.

And the 10-speed cassette is generally corresponding to the front 2 crankset system, the front crankset from 3 pieces to 2 pieces, if the corresponding rear 9-speed cassette gear ratio will drop more, corresponding to the 10-speed can increase the two gear ratios to reach 20 speed, but also enough to cope with various road conditions.

Everything always has to evolve, and the change in the transmission system of the front 2 and rear 10 in the mountains is also a trend.

The smallest is 11t, there is no such thing as 10 speed is faster than 9 speed, for some people, 10 speed cassette is just a good gear ratio for themselves at high cadence.

Let's put it this way, if you can reach the frequency of 10 speeds as fast as 9 solitudes, then you are fast enough, one.

Generally, only the top training and top competition mountain bikes are equipped with a 10-speed cassette, but in fact, I personally feel that 9 speeds are enough.

Yes, the 10-speed minimum fly is indeed a little smaller than the 9-speed minimum fly, but it is negligible, because the size of the crankset also varies.

The 9-speed is already very fast, and it is generally only used when there is a strong man to lead the formation, unless you have a really slow cadence.

1.The chain links are deformed or broken2The rear duplicator is not in the right position. 3.The shaft is not locked 4Frame stiffness decreases.

Year 2011.

Summary. Hello, this situation is caused by a stuck override clutch in the rear flywheel. When the daughter in the clutch is stuck, the clutch loses its effect, causing the wheel to push the chain and crankset in reverse.

To repair this fault, disassemble the rear cassette and replace the internal clutch or replace the clutch over. There is a time limit for the first reply, if you have any questions, you can reply and answer them in detail.

Hello, don't worry, I can ask for your question, but wait a minute, I need text for about 2 minutes.

Hello, this situation is caused by the overtaking clutch in the rear flywheel stuck Zheng do suspicion of the banquet. When the gold in the clutch is stuck, the clutch will lose its effect, causing the wheels to rotate the chain and crankset in the opposite direction. To repair this fault, disassemble the rear cassette and replace the internal clutch or replace the clutch over.

There is a time limit for the first reply, if you have any questions, you can reply and answer them in detail.

Is your 7-speed cassette or spinner? Cassette and spin hubs are not the same! All 9 speeds are cassette!

If you switch to a 9-speed rear flywheel cleat, you can lock the flywheel tightly! If the lock is not tight, you need to add a gasket! If you're currently spinning flying, you'll need to change the hub!

The chain also needs to be changed! The 9-speed chain is narrow!

Hello "Mountain Bike Bug Group" will be happy to help you with your questions about mountain biking, and our team welcomes you to join

Is it worth noting that the chain problem and incompatibility with the front and rear gears? Not compatible, you have to change to a 9-speed chain.

Do I need to change anything? ）

Dials, transmissions, hubs, flywheels, chains, etc

The 7-speed hub is an old-fashioned rotary hub, because the card hub used by the rotary hub and the 9-speed flywheel is not universal, so the hub must be changed when changing the card fly).

Finally, the rim is re-knitted

Introduce the steps and process of replacing a mountain bike flywheel.

Flywheel: The flywheel is fixed at the right end of the rear axle with internal thread screwing, maintains the same plane with the sprocket, and is connected with the sprocket through the chain to form the driving system of the bicycle. In terms of structure, it can be divided into two categories: single-stage flywheel and multi-stage flywheel.

The single-stage flywheel, also known as the single-chain wheel flywheel, is mainly composed of parts, such as a jacket, a flat block and a core, a jack, a jack spring, a washer, a wire block, and a few steel balls.

The working principle of its single-stage flywheel: when the pedal is stepped forward, the chain drives the flywheel to rotate forward, then the flywheel internal tooth and the jack are contained, and the rotating force of the flywheel is transmitted to the core through the jack, and the core drives the rear axle and the rear wheel to rotate, and the bicycle moves forward.

When the pedal is stopped, the chain and the jacket do not rotate, but the rear wheel still drives the core and the jack to rotate forward under the action of inertia, and the flywheel inner tooth produces relative sliding, thereby compressing the core into the notch of the core, and the jack compresses the jack spring. When the jack tooth top slides to the top of the flywheel's inner teeth, the jack spring is compressed the most, and then slides forward a little, and the jack is bounced to the tooth root by the jack spring, making a "click" sound. The core rotated faster, and the jacks quickly slid on the inner teeth of each flywheel, making a "click" sound.

When the pedal is reversed, the jacket rotates in reverse, which will accelerate the sliding of the jack, making the "click" sound more urgent. The multi-stage cassette is an important part of the bicycle transmission.

1 all.

First, the main structure of the variable speed bicycle.

The reason why a shifting bike can change gears and save effort is that it has a set of chain discs of different sizes mounted on the center and rear axles. The pedal of the bottom bracket and a group of chain discs of different sizes form a labor-saving axle, and the pedal radius (wheel radius) is larger than the chain disc radius (axle radius), so the cyclist can generate a larger force on the chain disc to drive the bicycle forward by applying a small force on the pedal.

The wheels in the rear axle and a set of chain discs of different sizes (commonly known as "flywheels") form a laborious axle: the force transmitted to the flywheel is used to drive the rear wheel to turn the bicycle forward.

Second, the principle of variable speed and labor-saving of variable speed bicycles.

After the power added by the cyclist to the pedal is "amplified" by the "chain disk", it is transmitted to the "flywheel" by the chain, and the "flywheel" then drives the rear wheel to rotate, thereby driving the bicycle forward. The gear-shifting bicycle uses the different gear ratios of the chain disc and the flywheel to change the forward speed.

When the "**" of the chain disc is combined with the "Xiaofei" of the flywheel, the "**" rotates one turn, and the "Xiaofei" will rotate many times, so that the "Xiaofei" will drive the rear wheel to move forward a long distance, so the speed is the fastest at this time. However, at this time, because the wheel radius of the pedal is not much different from the shaft radius of "**", the force generated by the power added by people on the pedal is not too large. Namely:

At this time, although the speed of the bike is faster, the rider will put in more power.

When the "small disk" of the chain disk is combined with the "big fly" of the flywheel, the "small disk" rotates once, and the number of turns of the "big fly" is not too much, so that the distance of the rear wheel driven by the "big fly" is not large, so the speed of the vehicle is the slowest at this time. However, at this time, because the wheel radius of the pedal is very different from the shaft radius of the "small plate", the power added by people to the foot pedal will produce a large driving force on the "small plate". Namely:

At this point, the speed is slow, but the rider puts in the least amount of power.

3. Variable speed and labor-saving tips for variable speed bicycles.

After understanding the principle of shifting and labor-saving of the gear-shifting bicycle, you can easily grasp the tips of shifting and labor-saving. When the bicycle is driving on a flat road, in order to speed up the vehicle, it is advisable to use a combination of a larger chain disc and a smaller flywheel; When the bicycle goes uphill, it is advisable to use a combination of a smaller chain disc and a larger flywheel, which is more labor-saving and easy to climb. Of course, whether it is a flat road or an uphill slope, it is not advisable to go to extremes when combining a chain disc and a flywheel, as this will increase the chance of a bicycle failure, such as a slip chain.