Merida Bike wants to change the transmission, I don t know how much it costs in total?

Original Tourney SIS (beveled shifting).

There is no guide wheel at the line change: about 100.

There is a guide wheel at the line change: about 80.

Lower-level Tourney SIS (flat push).

The old model has high hardness and the effect is average: about 60 is needed.

**: It takes about 60.

Acera and Altus (7- and 8-speed compatible): Around 150.

There is no need for anything else higher.

If you want to save money, you can change to a 21-speed one

Need to change the rear hub, 7 pieces of cassette and right handlebar, the flywheel and handlebar must be changed to SHIMANO, of course, if you want to change the taste SRAM, it is also very good, after all, his cost performance is much better than SHIMANO, and the feeling of Ratio gear ratio 1:1 is also not available in Shimano

A little more troublesome is the rear hub, I don't know if the Merida Warrior 18 is a cassette hub or a tooth pattern, if it is a card type, you have to replace it If it is a tooth pattern, it depends on whether the length of your axle stick is enough, If the length is enough, you can put on 7 pieces of flywheel, pay attention to add a spacer between the flywheel and the right fork hook to prevent the chain from touching the right fork when it becomes the smallest piece If the axle stick is not long enough, you can change it to a longer one, even if you buy an ordinary rear hub and then remove it, you can't spend a few dollars

It can be changed to 3-9, but it is very expensive, and it is recommended to change it to 3-8, which is generally about 1000 yuan.

It depends on what grade you want.

Around 50.

The function of the bicycle transmission system is to change the speed of the vehicle by changing the cooperation of the chain and the gear discs of different front and rear sizes. The size of the front chainring and the size of the rear chainring determine how hard the bike rotates the pedals.

The larger the front chainring, the smaller the rear chainring, and the more laborious it is when pedaling. The smaller the front chainring and the larger the rear chainring, the more relaxed it is when pedaling.

Depending on the rider's ability, the bike can be adjusted by adjusting the size of the front and rear chainrings, or to cope with different road sections and road conditions.

In general, the so-called several stages of bicycle transmission refers to the number of front ** teeth x the number of rear flywheel teeth', and the mountain bike is usually the front 3** and the rear cassette.

Six, seven, eight, nine, and ten speeds, multiplied by a variable speed.

The role of the derailleur:

When the pedals are rotated, the front chainring rotates, and the force is transferred to the rear chainring via the chain, and the wheel advances. The size of the front chainring (number of teeth) and the size of the rear chainring (number of teeth) determine the force with which the pedals are rotated.

The riding of a bicycle is to start, stop, go uphill, downhill, windward, downwind, etc. To be able to maintain a certain speed under any condition (whether the bicycle is moving fast or slowly, it can maintain a certain pedaling pace and torque, and the transmission is required.

The above content refers to Encyclopedia - Bicycle Transmission System.

Ranging from a few hundred to tens of thousands.

Hundreds are rubbish, and a better gearcar will have thousands of gearshift parts.

The better brands are also divided into low, medium and high, low 1000-2000 in 2000-10000 and high 10000 or more. Just probably**.

There are also three types of cars: mountain bikes, road bikes, and folding bikes.

Ordinary brands are about 500 yuan, and well-known brands need more than 1,000 yuan.

Ranging from a few hundred to tens of thousands. Hundreds of them are rubbish. A few thousand is just a few thousand. Tens of thousands should also be divided into models.

Just a few hundred dollars can be bought just by changing gears, and there are thousands of good ones, depending on how you choose.

If the transmission car has a regular speed change, it is necessary to follow the principle of "big in front and small in the back, small in front and big in the back".

The front 3 and rear 7 are the fastest on the flat road (the crankset is the largest, the flywheel is the smallest), and usually the front 2 rear gears are more suitable for riding speed in the city. Uphill front 1 rear 1 is the most labor-saving (the crankset is the smallest, the flywheel is the largest), usually the front 1 rear gear is more suitable when climbing. It can be used before and after the downhill (according to the situation, the crankset should not be on the small chainring when going downhill, and the flywheel should not be on the large chainring, so as to avoid the danger of kicking).

Generally, the left front dial and the right rear dial, the larger the value on the transmission, the higher the speed ratio, that is to say, the larger the value of the left hand, the larger the gear of the crankset, the larger the value of the right hand, the smaller the gear of the flywheel, at this time, the front is large and the back is small, the speed is the fastest, and vice versa.

Don't change the front and rear transmissions at the same time, it will be bad for the transmission, and don't change the speed after stopping, make sure that the rear wheel turns before changing the speed, otherwise it will also hurt the transmission.

The front is large and the back is small, and the front is small and the back is larger, but the pedaling frequency is higher, and it will be very laborious for a long time.

The correct way to change the speed is: the flywheel (that is, the rear disc) starts at the time of the first time, and changes to the small disc as the speed accelerates, so that it is both labor-saving and fast. If the crankset (that is, the front disk) is a three-piece type, the rear disk can not be hung into the most ** when the front disk is hung into the most **, on the contrary, when the current disk is hung into the smallest disk, the rear disk can not be hung into the smallest disk, and the front disk is in the middle of the disk when the rear disk is arbitrary.

When using the flat road, the front is large and the back is small, if the front is small, the back will be very tired and slow; When going uphill, use the front small and the back large, because the front is large and the back is small, not only will it be tired, but it will not be able to pedal when encountering a steep slope, and at the same time increase the burden on the transmission system. Under normal circumstances, the downhill should be large in front and small in the back, which is convenient for controlling the speed; When going uphill, you generally do not change gears, and you should shift into a low gear (small in the front and big in the back) before going uphill, because the mid-to-high-end transmission kit that is not Shimano or SRAM is easy to damage the transmission when changing gears uphill.

The first step, the vehicle uphill to the left side of the shift to a gear, the second step, when stepping on the feel that it is effortless, you can adjust to 2 gear or 3 gears, the third step, the flat road state, the left side of the degree can be adjusted to 5 gears, 6 gears, 7 gears can be adjusted to the fourth step, downhill when the left can be adjusted to 3 gears, you can also adjust according to your liking, in special cases, if you need to slow down downhill when you can't put the gear in place, you can slow down the step a little, and you can generally change the speed smoothly.

The transmission on the left (finger dial) is to control the crankset in front, that is, to control the front derailleur, and the transmission on the right is to control the back flywheel, that is, to control the rear derailleur; The speed is fastest when the front adjustment ** is on the rear adjustment to the pinion. I hope my reply is helpful to you.

It is a transmission that shifts, but it is a manual transmission.