What is the method of disassembling a bicycle transmission?

The first thing to look at is whether it is a screw or a card.

Screw: If there is a tool in the counterclockwise direction, it can be removed, and it is not easy to disassemble if there is no tool.

Cassette: There is a small cover on the smallest piece of the flywheel, and you can see a rectangular torx mouth between the small cover and the hub shaft, which is with a flywheel wrench.

You can also use a flathead screwdriver to remove the stress.

Dismantle, counterclockwise for removal.

This should be caused by the fact that the crankset and the flywheel are not on the same plane, and in general, if you choose a tooth piece parallel to the crankset and tighten the chain, there should be no chain jumping. The solution is as follows:

1. Fix the chain on the tooth piece parallel to the crankset, and then tighten the chain (because the rear fork of the transmission car is different from the ordinary single-speed car, the rear fork part does not have the structure commonly known as the "hanged ghost", so it is difficult to pull it just right).

2. Change the single-speed flywheel (this is a simple matter of 10 yuan to buy and replace it).

3. Install the transmission back after repairing, and twist the H and L screws on it to lock the gear (since your chain is also truncated and the transmission is broken, it seems that the cost of this scheme is a little higher, but it is not very expensive to change an ordinary transmission and a chain** about 20-30 yuan).

In other cases, the main thing to see is whether the crankset is flat, whether there is a concave and convex situation, whether the flywheel tooth is intact and so on

Bike megavolt muffled handlebar on the derailleur.

Divided into:SwivelwithFinger dialTwo kinds, the left one is used for the front gear shift, that is, the driving wheel shift, by rotating or toggling, the chain can be moved on the large, medium and small three gears, when the chain is on the largest gear, the speed of the car is the fastest, but more laborious, on the contrary, the speed is slow and labor-saving.

The right hall is used for rear gear transmission, now there are usually 6-9 gears unequal, if multiplied by the front 3 gears is usually called 18-speed car or 21-speed car or 24-speed car or 27-speed car, and the gear of the front driving wheel is the same, by rotating or toggling to make the chain change, different groups of bends are:

The rear driven wheel, contrary to the driving wheel, when the chain is on the maximum gear (that is, the position of the 1st gear above the manipulator), the most labor-saving, but the speed is slow, changing the gear will gradually change, when the gear is the largest, the chain is on the smallest gear, at this time the speed is the fastest and the most laborious!

I'm a big truth-teller.

You feel like I have a point.

Turn clockwise or counterclockwise and try it to see how to use it. The function of the bicycle speed envy system is to change the speed of the bike by changing the cooperation of the chain and different front and rear gear discs. 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, the larger the rear teeth, the more relaxed it is when pedaling. According to the ability of different riders, the speed of the bicycle can be adjusted by adjusting the size of the front and rear chainrings, and the bridge can be used to cope with different road sections and road conditions.

Different products have different ways to use.

The bicycle transmission installation method is as follows:Tools: Screwdriver, Solid Lubricating Oil, 5mm, 4mm, Allen Wrench, Ruler, Goggles, Needle-nose pliers, Circlip pliers, Torque Measurement Tools.

1. Put solid butter on the lock point of the rear hook jaw to make the installation smoother and avoid damage to the lock point.

2. Confirm that the rear dial locking screw and the rear hook claw have a mutual sail stop and laugh gear, and then lock the rear transmission with a 5mm hex wrench.

3. Adjust the H screw with an Allen wrench so that the tip of the upper guide wheel is aligned with the outside of the tip of the smallest flywheel.

4. Move the rear derailleur to the maximum flywheel and adjust the L screw with an Allen wrench.

5. Make the tip of the upper guide wheel align with the outside of the tip of the maximum flywheel.

6. Use an Allen wrench to adjust the B tension screw.

7. The distance between the upper guide wheel and the tip of the lead wheel of the largest flying car should not be less than 6mm.

Here's how to install the bicycle transmission:

1. Apply solid butter to the lock point of the rear hook to make the installation smoother and avoid damage to the lock point.

2. Confirm that the rear locking screw and the rear paw stop each other, and then lock the rear transmission with an Allen wrench.

3. Adjust the H screw with an Allen wrench to align the tip of the upper guide wheel with the outside of the tip of the smallest flywheel.

4. Move the rear derailleur to the maximum flywheel and adjust the screws with an Allen wrench so that the tip of the upper guide wheel is aligned with the outside of the tip of the largest flywheel.

5. Use an Allen wrench to adjust the tension screw, so that the distance between the upper guide and the tip of the maximum flywheel cannot be less than 6mm.

The role of the gearbox.

The gearbox mainly refers to the gearbox of the bicycle, which is divided into two types: manual and automatic. Manual transmissions are mainly composed of gears and shafts, and different gear combinations produce shifts and torque. The automatic transmission AT consists of a torque converter, a planetary gear, a hydraulic torque control system, and a hydraulic control system.

Variable speed and torque are achieved through a hydraulic transmission and gear combination.

The performance of the gearbox is the key to measure the power, economy and drivability of construction machinery. At present, there are mainly mechanical transmission, hydraulic transmission and hydrostatic transmission. The gearbox has manual shift and power shift, and its structure includes fixed shaft type and planetary type.

1. The first installation of the front dial:Install the front derailleur on the seatpost, and the hoop fixing screw is not slightly tightened, so that it has a certain friction with the Danalu seatpost, and can move up and down and turn left and right on the seatpost more freely.

2. Spacing positioning:Use the preset alignment block that comes with the front derailleur (you can also use a toothbrush handle, etc.) to cushion the front derailleur so that the outer guide plate surface is on the same plane as the large crankset plate. Move the front derailleur up and down along the seat tube to keep the distance between the outer guide plate and the crankset teeth within the range of 1-3mm.

At this point, tighten the front dillerale ring fixing screw slightly, so that the upper and lower positions of the front derailleur on the seatpost have been determined.

3. Plane positioning:Grasp the strength, turn the front derailleur left and right on the seat tube (be careful not to move the front derailleur up and down), and more accurately make the front derailleur outer guide plate surface and the large crankset plate surface on the same plane, that is, determine the left and right position of the front derailleur on the seat tube. At this point, tighten the front dial ring fixing screw thoroughly.

4. Steel wire fixing:Pass the steel wire through the position shown by the steel wire fixing screw, and place the inner hexagonal wrench in the screw and prepare to tighten; Clamp the wire head with a wire plier and pull hard, at this time, the preset alignment block of the front paddle guide may fall, continue to grasp the strength and direction and pull hard.

When the front dupliceur outer guide plate surface and the large crankset plate surface are on the same plane, quickly tighten the steel wire fixing screw. What we want to remind here is that when operating this step, the finger in charge of the front dial must be positioned at 2 (that is, positioned in the middle disk). After that, the minor debugging goes back to the previous description.

There is also a rear derailleur shrinkage tension screw, that is, the one on the top of the H screw on the top of the claw hook, the screw also has a certain impact on the speed change, it is not obvious in the Himmano system, it is just that the friction is relaxed to increase and the wear is reduced, and the tightening is easier to jump the chain, but in the single spring system of SRAM, the screw is not adjusted well, which will lead to the inaccurate positioning of the whole system, especially when it is on the **.

If the chain is flying at the minimum (of course, it is rarely matched like this), it is inevitable that there will be slight friction between the chain and the front derailleur; If the chain is at maximum fly, and there is slight friction between the chain and the front derailleur, you can unscrew the L screw counterclockwise (minor adjustment). Of course, whether the front derailleur shifts correctly is also directly related to where the front derailleur was originally mounted on the seatpost. Because I don't know your specific situation very clearly, I just explain it in principle, and it is mainly up to you to experience and practice it yourself.

Tools Ingredients: Flywheel cover tools, flywheel fixing wrenches, large adjustable wrenches, grease or anti-caking agents. Here's how:

1. Use a fly wrench to remove the rear wheel from the rear frame of the bicycle, remove the quick release lever, and pay attention to the small springs on both sides.

2. Take out the flywheel cover tool dedicated to disassembly, which cannot be replaced by other wrenches, as shown in the figure below.

3. Attach the flywheel cover tool to the flywheel cover so that the spline and groove are aligned.

4. Install the flywheel fixing tool so that it completely engages with the flywheel piece, and the function is to prevent the flywheel tower base from rotating.

5. Place the flywheel facing up, and use a large wrench to start unscrewing the flywheel cover tool counterclockwise.

6. Tighten the flywheel cover clockwise, and pay attention to the minimum flywheel blade not to be misplaced.

7. Carefully check whether the spacing of the flywheels is even, and then use a wrench to completely tighten the flywheel cover.

8. Use a movable wrench to tighten the flywheel cover clockwise until it cannot be screwed, and the disassembly and assembly of the rear wheel bearing of the bicycle is completed.

Note: The rear wheel of the bicycle has rolling bearings. Bicycles usually have a bead structure on the rear wheel, or they use industrial bearings directly. Both have the same principle and both belong to rolling ball bearings.

It's just that the assembly process is all different. In addition, some high-end wheels are equipped with needle roller bearings in the rear wheel base. Needle roller bearings also belong to rolling bearings, but the object that rolls inside the former bearing is global, while the object that rolls inside the needle roller bearing is cylindrical.

Installation method: The wrench can be placed clockwise. So does the flywheel.

Bicycle knob type finger dial, can be replaced with a toggle type finger dial, as long as it is the same manufacturer's same speed of the same speed of the finger dial, such as: the turn of the handlebar type dial for S brand 6 speed, you need to choose the same S brand 6 speed of the toggle type dial. There is no need to change the transmission.

Bicycle Handlebar Finger Shift Replacement Steps for Rotary Finger Dial:

1. Use an inner hexagonal wrench to loosen the locking screw of the transmission line counterclockwise and pull out the transmission line.

2. Use an inner hexagonal wrench to loosen the handle locking screw counterclockwise, and remove the handlebar sleeve, the knob type finger dial and the speed line.

3. Install the new toggle finger dial into the handlebar, adjust the angle and lock it, and thread the transmission line into the transmission line pipe.

4. Tighten the transmission line from the other end of the transmission line pipe, and penetrate it into the transmission line fixing screw to lock it.

5. Adjust the fine-tuning screws of the transmission line to make the transmission in the best position.

Note: Finally, put it into the handlebar, if the original handlebar is integrated with the handlebar dial, you need to purchase a new handlebar for installation.

The transmission bicycle transmission installation step change car is as follows:

Materials: cable ties, pliers, Phillips screwdriver.

1. Open the core ballast fastening screw of the front derailleur to make the fixing ring of the front derailleur open.

2. Put the front derailleur into the riser above the bottom bracket of the frame, adjust the position of the front derailleur up and down to the position where the difference between the derailleur installation line and the top of the large crankset teeth is about 3 mm, and then lock the fixing screws of the front derailleur. In the case of a blade front derailleur, insert the front derailleur directly into the mount and debug.

3. Install the finger dial of the front derailleur on the handlebar and adjust it to a position suitable for your own operation for tightening.

4. Thread the transmission line pointed by the front derailleur into the transmission line sleeve, and then thread it into the transmission line holder of the front derailleur, and lock the transmission line after pulling the transmission line closer.

5. Remove the initial position fixing bolt on the front derailleur, make minor adjustments to the front derailleur through the fine adjustment screws on the front derailleur and the front finger dial, and then adjust the limit screws on the front derailleur in place.

The following tools are required: Allen wrench, Phillips screwdriver, chain cutter.

1. Cut off the chain with a chain cutter, note: if the chain is quick to disassemble, then just disassemble the quick release, and the bolt of the chain is black and the color of the other bolts is different (if you don't have a special color, then you can cut it off arbitrarily).

2. Use an Allen wrench to loosen the shift cable on the front derailleur, loosen the fixing screw of the front derailleur with an Allen wrench, and remove it. Use a Phillips screwdriver to release the front shifter and remove. Realign the chain and attach it with a chain cutter.

3. Use an Allen wrench to loosen the fixing screws of the variable speed cable counterclockwise and take out the variable speed cable. Cut the chain with a connector, and if it is a chain with a quick-release lock, you can open the quick-release lock. Then cancel the chain.

Unscrew the front derailleur (front derailleur) set screw counterclockwise with an Allen wrench. Then remove the front derailleur (front derailleur).

Transmission adjustment steps for mountain bikes:There are 3 6, 3 7, 3 8, 3 9 and other types of mountain bike transmissions, if your car needs are just commuting in the morning and evening, buy 7 is enough, if you are mainly used for long-distance riding or professional racing, 3 8, 3 9 or even up.

If the front crankset is 1st gear, the rear flywheel is best used with 12345 gear, if the front is 2nd gear, the rear is best used with 234567 gear, if the front is 3rd gear, the rear wheel and bench surface are best used with 789 gear.

Chain, try to keep parallel to the body, even if not parallel, the angle of the cross is as small as possible, otherwise it will accelerate the wear of the chain, and even slippery silk, slippery silk car can not ride, you must use your hand to break the chain hard to the gear to get stuck, in order to continue to ride, the chain is very dirty, very troublesome, and not easy to break, so that the travel to, to observe the chain angle at any time.