First of all, you need to prepare the tools, place the bike vertically and secure it in special supports-racks.
Brake Problem Symptoms and Adjustment Frequency
First of all, it is necessary to check the performance of the brake system.
- Raise the front wheel so that it does not touch the surface. Give it rotation and check if the brake pads touch the rim for a short time and if there are no extraneous sounds. If this happens, then the centering of the wheel is disturbed. it has “figure eight”. Before proceeding with further verification, it is necessary to eliminate this malfunction.
- During rotation, press the brake lever. the brake pads should work instantly and the wheel should stop. If there is a delay in braking or wheel slip, then a brake adjustment is required.
- Raise the rear wheel off the ground and repeat the above procedure.
Since the elements of the brake system are in close contact with the environment, check the appearance and condition of the brake pads and control cables. It is necessary to clean them of dirt and pay special attention to the condition of the cables. damage and breakage of even one strand can cause trouble, so they must be replaced.
So, the performance of the braking system has been checked.
When do you need to adjust and adjust the brakes??
- After purchase and a small run-in under load, inspection and adjustment of all systems is required. including the brake.
- After mechanical impact on the bike. shocks and falls.
- After long-term storage. Especially in unheated rooms.
- During the movement, extraneous sounds appeared. knocking and creaking, or a periodic whistle.
- The response of the braking system to control has changed. delayed response or, conversely, release.
The performance of the braking system is especially important if you have a mountain bike.
Consider the adjustment procedure for the most common bicycle brakes. mechanical rim brakes.
First stage. Adjusting the position of the brake levers on the steering wheel
Oddly enough, the first thing that needs to be adjusted is the position of the brake lever on the steering wheel. Further adjustment of the entire brake system will depend on its position. To do this, loosen the handle securing screw for a few turns and set it to a comfortable position. the brake lever should be pressed by the second phalanges of the fingers. Adjust the main position (distance to the handle) of the brake lever to a position convenient for you using the adjustment screw.
Required tools and accessories
Prepare the recommended tools and arrange them so that they are at hand. What is required?
- The best option is a set of tools for a bicycle, it has everything you need.
- Screwdrivers. flat and Phillips.
- Wrench set or special bicycle wrench.
- Allen key.
- Wedge spacer for adjusting the clearance (required if you have soft type brake pads without a metal base).
- Cleaning cloth, cloth to protect against environmental dirt.
All is ready? Are the tools arranged in a convenient order? Is there a cloth under the bike? Is the bike in a comfortable position? Then let’s start!
Stage three. Installing the brake levers
The pads are installed on both sides of the rim, and their correct operation requires centering the levers located on both sides of the wheel.
- Press the brake lever on the steering wheel and control the simultaneous contact of the pads with the rim.
- Press the brake lever on the steering wheel and control the simultaneous contact of the pads with the rim.
- If there is an advance in pressing one of the pads, adjust the tension of the cable.
- Each lever has a special tension adjustment screw. If the block touched the rim earlier, then it is necessary to increase the tension of its spring, or reduce the tension of the opposite.
НИКОГДА НЕ ПОКУПАЙТЕ СЕБЕ ВЕЛОСИПЕД ФИКС
Does the touch occur at the same time? Then we go to the final stage of setting.
Types of brakes and the need to adjust them
Brakes are the main accessories for a bicycle and they are divided into two types depending on their effect. The first and most common type is rim, the principle of their operation is mechanical action on the wheel rim to reduce speed and rotation and stop. The second, not the most common type, is disk. Depending on the type of force transmission from the brake lever to the brake mechanism, the brakes are divided into mechanical and hydraulic. The following are guidelines for adjusting mechanical brakes.
The need for adjustment and adjustment
The brake is the main means of preventing accidents while driving, their reliability and correct adjustment ensure the safety of the vehicle and the passenger.
Why bike speeds don’t shift well
Usually, the thought of having to fix derailleur problems comes when the chain is shifting too hard between the sprockets, or the gears are not shifting at all. The problem comes suddenly, as an option, you can contact the master.
However, this issue can be solved in the service in a couple of minutes, and the money will have to be paid in an hour. Maybe you should tinker yourself?
Before proceeding with the instructions for setting up the bike speed system, let’s determine why it does not work correctly:
- Switches are damaged. A complete replacement is needed to solve the problem.
- Deformed cock. protection of the rear derailleur. Usually it is advised to change, but once you can straighten.
- Spring worn or stretched cable. Replacement required, switch setting.
Very often, all the components of the transmission are in good condition, and the gears are still poorly shifted. New parts, or small workpieces installed in a transmission unit are a common cause of poor chain sprocket running.
Correct cycling gearshift setting
Modern bicycles equipped with a gear system allow you to move quickly and with minimal energy losses in any conditions: long climbs, rough terrain, roads with sharp turns that require constant changes in speed and gear ratio. This can also include driving against the wind, off-road, poor quality asphalt In general, the value of the transmission unit is simply colossal, especially on mountain bikes.
Despite the invaluable help, the transmission is great and requires frequent attention, care, and sometimes long and tedious fuss. One of the components that needs to be spent periodically is the shifting mechanism, which consists of front and rear derailleurs. At first glance, the arrangement of these parts seems complicated. In practice, setting up gear shifting is very simple.
Setting switches at home
Now let’s figure out how to set up the speed system ourselves. Derailleurs on bicycles with multi-gear transmission are divided into front and rear. The latter are most vulnerable when riding in a variety of road conditions, the risk of damage is higher compared to the front ones, but the adjustment must be done at the very beginning. Obviously, the rear derailleur serves more stars, so it takes longer to set up.
Attention! If there is damage, and the tensioner is not parallel to the frame and cassette, then it will not be possible to correctly adjust the system!
Как настроить задний переключатель велосипеда за 5 минут!
First you need screws L and H. they are clearly visible, no need to look. Also includes a cable adjuster, tension and fixing screws.
- H is used to align the roller with the small rear sprocket. By tightening the screw L, we set the roller on one straight line with the large rear sprocket.
- Set the highest speed on the shifter.
- Tension and fix the cable with the fixing bolt.
- Large gears should be included without interference, otherwise, using the adjuster, the cable is slightly weakened. Additional tension will be needed if gears are poorly reset.
Actually, the adjustment itself is made, it remains to adjust the switching accuracy. This is especially true for systems with a large number of stars. To do this, the chain is installed on a large chainring at the back and a small one at the front. By tightening the tension screw, we achieve the optimal position of the roller. as close as possible to the cassette. The same must be done and vice versa: set the chain to the maximum sprocket in the front and the minimum sprocket at the back. The roller should not rub against the cassette, just be located next to it.
How to properly set up the switch in front:
- Check device attachment.
- At minimum speed, release the cable tension.
- Use screw L to create a gap between the derailleur body and the chain (1 mm).
- Secure the cable with the adjusting bolt.
The same should be done with the H-screw. The maximum speed must be set, and the gap with the chain must not exceed one millimeter.
Adjust the speeds on both derailleurs until the chain is free to swing from one chainring to the other. If it is difficult to walk, it is necessary to adjust the correct position of the cable using the adjusting bolt.
After all the manipulations, the entire system is checked. To do this, you need to ride a bike and try all the recommended gear ratios. Note that on mountain bikes, the transmission adjustment is a common periodic procedure, and if suddenly the transmission goes tight, we are not in a hurry to draw conclusions about the breakdown, but we do what is described above.
Do not think that a high-quality transmission does not need to adjust the shifting system. Yes, it may be necessary to do this less often for shimano components, but sooner or later you will still have to face.
We just saw an easy way to adjust the front and rear derailleurs. Is it really necessary? Adjustment of the shift mechanism is necessary for the transmission, like tires for a wheel. Timely assistance to the traffic node will not only solve current problems, but also prevent them in the future. Eliminate all inconveniences in time and ride with pleasure!
Set the center position of the front derailleur frame
It is necessary to transfer the chain to the center sprockets of the cassette using the rear derailleur. We switch from the first to the second speed (the chain should initially be on the 1st star), if it does not switch, then it is necessary to tighten the cable with the tension regulator (see paragraph 3.A), which is located on the shifter. We twist until the chain clearly and quickly transitions to the middle star.
Before you start adjusting the front derailleur
Before you start adjusting the front derailleur, make sure you have the following conditions:
We start by unscrewing (loosening) the bolt that holds the front derailleur cable.
Usually the bolt is unscrewed with a 5 hexagon or a 9 spanner.
Next, I recommend checking the position of the switch frame relative to the star system.
If your switch is bolted to the frame, and not with a clamp, as in my case, then you do not need to set the height and angle of the switch, since everything is already exhibited there.
A. Check the angle of rotation. The switch frame must be parallel to the stars of the system.
Try to be guided not by the chain, but by the stars, as the chain can stand in extreme gears and the front derailleur will not be installed correctly. With red lines, I showed the central star and the inner side of the switch.
B. Check the height. The front derailleur frame should be slightly higher by 1-3 mm. than the largest star in the system. To adjust, slide the frame by hand so that it is above the 3rd star and adjust the height.
Shimano Tourney derailleur frame sticker that assists in front derailleur height adjustment. In the photo, by the way, a new bike, on which the front derailleur is set much higher than necessary.
Most often, new shimano front derailleurs have a sticker that shows how high the derailleur should be.
Now let’s start working with the cable and shifter on the handlebars.
A. Find the cable tension bolt on the shifter and screw it all the way into the shifter and turn it half a turn.
The cable tensioner is indicated with an arrow. In my case, this is a combo grip (brake and shifter in one body), but on a regular shifter the tensioner is the same.
B. Pull the cable by hand or use pliers and tighten it with the fixing bolt, which I wrote about in paragraph 1. Note that there are special grooves on the washers holding the cable. It is necessary to fix the cable in them.
We begin to set the extreme positions of the switch frame with bolts H and L.
High. sets the extreme position at the largest star in the system.
Low. adjusts the extreme position of the switch on the smallest star.
Adjustment and adjustment of the front derailleur
I strongly recommend that you set up the rear derailleur before you start setting / adjusting the front derailleur so that everything works correctly for you. This manual will fit all brands and models of front derailleurs: Shimano, Sram, Microshift, Campagnolo and others.
We expose the extreme position of the frame using the bolt L
To adjust the extreme position of bolt L, you need to switch to the largest sprocket on the rear derailleur (corresponds to the first speed on the shifter). Next, we begin to twist the bolt L until there is a gap of about 1 mm between the chain (which is located on the smallest star of the system) and the switch frame (the smaller the better, the main thing is that the chain does not rub against the switch frame).
We expose the extreme position of the frame using the bolt H
When setting the end position H, we need to switch to the smallest star on the cassette, which corresponds to the largest number on the right shifter from 6 to 11, depending on how many speeds you have there. We throw the chain onto the third star (the largest star on the system) and turn the screw H. Adjust the frame so that the chain does not fly onto the connecting rod with a clearance pedal of 1 mm will be quite enough.
Checking the clarity of gear shifting.
Try to change gears and see if the chain goes to all stars.
often than not, the chain does not go from the second star to the first and clings to the switch frame. This is solved by unscrewing the bolt L (so that the switch frame moves towards the frame) one or two turns and everything should work perfectly.
Differences between road derailleur setting and MTB
There is no difference in front derailleur settings on mountain bikes and road bikes. The only thing is that in a road bike, the star system does not use 3 stars, but two stars, which makes the tuning faster.
If you have a dual system. You will also need to complete all the points, and in the 4th step there will be no adjustment of the central position, and the tension of the cable will be adjusted when switching to the 2nd star, where there will be an adjustment of the extreme position with the screw H.
Congratulations you have tuned the front derailleur, I also recommend checking if you have the correct chain length.
Adjusting bike speeds
Adjust the bike speeds. one of the most frequent requests for bicycles on the Internet. For whom this task seems trifling, someone, even after lengthy explanations, turns out to be “too tough.” Of course, the easiest way is to give the bike to the workshop, where they will cope with it in a matter of minutes. But the most interesting! over, these skills will be needed in case of long trips, where, apart from the tool and your hands, no one else will help.
So, the cycling season is on the nose, we take out your favorites from the frozen balconies and closets and begin to “play tricks”.
Actually. everything is not so difficult, you will need a rear wheel stand (for easy adjustment of gear shifting) and a tool. standard set of 2-3 socket (letter L) hexagons, adjustable wrench, better set of wrenches for different nuts flat and Phillips screwdriver for adjusting screws.
We put the chain, front and rear, on the smallest sprockets. We clean the bike from dirt and impurities, wipe all surfaces from dust, remove clots of old grease, all rotating elements must be clean.
Working with adjusting screws. If the bike went to winter storage in good condition, do not touch the adjusting screws yet. The mechanics of all the famous bicycle manufacturers in the world recommend changing all the cables once a season. In our case, we will change the cables and shift shirts. To do this, unscrew the nut securing the shifter drive cable and remove the protective cap from the cable.
If there is an adjustment nut on the shifter and on the cable tensioner switch, screw it back in so that it can be used to tighten the cable. We remove the shirts from the cable, but do not throw them away. They come in handy for cutting new ones. We take out the cable from the shirt and, wiping it from dirt, take it out of the shifter and replace it with a new one. Next, we put in place new shirts (they should be with longitudinal weaving) with new tips. If the old shirts did not fit well in length, we lengthen or shorten them. Next, thread and tighten the front and rear derailleur cables. Trying to switch the chain to a large sprocket. Then we drop the chain back. If everything works out, then after checking the shifting of all rear gears, we can assume that the rear derailleur is set, and if not, we adjust the shifting by pulling or releasing the shifter cable with the adjustment nuts. You need to turn them very smoothly, literally a quarter of a turn. We look from behind at the position of the switch on the smallest and largest stars. The correct position of the selector wheels can be ensured by 1. a screw marked Lo or. we adjust the position of the rear derailleur so that the position of the largest gear corresponds to the same plane as the rollers of the derailleur. just twist or unscrew it, but very gradually and “from above” we control the position. When adjusting the position with the second screw labeled Hi or. the task is the same ensure that two stars are in the same plane (the smallest and the gear shift wheel in the switch). We do the same with the front derailleur. We start setting it up by checking the operation of the switch after replacing the cable and shirts with new ones. Tighten the cable when the derailleur is on the smallest chainring. Next, try switching to 2 and 3. Adjust the position of the switch by tensioning the cable with the adjustment nut located on the shifter. Sometimes you have to release and re-tighten the cable, fixing the nut on the switch.