Ways to eliminate the causes
To determine the extent of the damage, the chamber should be inflated with a pump to the values recommended by the manufacturer. In a bathtub filled with water, it is necessary to immerse the complete wheel or the camera itself. Air bubbles will rise from the water in places where the bicycle is leaking.
In the presence of multiple small damages leading to the fact that the camera deflates and resulting from natural wear of the rubber, the only correct solution would be to purchase and install new components on the bike.
If the cause is a breakdown of the nipple or its locking device, replacing the part will solve the problem. If the rubber around the base of the nipple is worn out, gluing the damaged area and applying a patch will not give a long-term effect. Not later than in a few days, the air will begin to come out at the same speed as before. The best way out of this situation is to install new tires and tubes on the bike.
Chipped rims that can damage the tube and cause it to deflate are removed by grinding. Mounting a special tape on the rim will help prevent the defect.
Try to avoid situations with falling wheels
To always be ready for long trips and not to worry if the wheel is flat, you should regularly inspect your bike and do not postpone cleaning and lubrication until later. Experienced cyclists advise:
Restoring these alloy MTB rims with JB Weld and elbow grease
- inspect tires after every ride. Sometimes it is impossible to immediately notice that the air pressure is dropping. Therefore, it will not be superfluous to measure the pressure with a pressure gauge or, at least, to determine the elasticity of the bicycle wheel by hand and understand if it is deflating;
- maintain the tire manufacturer’s recommended pressure, even if the air is not deflated;
- when riding a bike, avoid broken glass, fittings, sharp stones. Even if damage does not occur immediately, there is a possibility that a sharp object will get stuck in the tire and, under load, will gradually dig into the chamber until it finally pierces it;
- after returning home, inspect the bike, especially its tires, to find out if there are any cuts, holes or foreign objects on them. The sand and dirt should be washed off so as not to miss the sharp fragments or pebbles hidden under them. If dangerous items are found, they must be removed and then checked if the wheel is deflating and if repair is required. Minor punctures can be sealed with shoe glue to avoid possible enlargement.
Why flattens a wheel on a bicycle
There is hardly a bike owner on the planet who has never encountered a flat tire problem at least once. It is especially unpleasant when it lowers during a trip and instead of active movement it is necessary to urgently stop the bike and glue the rubber. There may be several reasons for this situation, and even a new camera and tire just installed on the bike is not a 100% guarantee that the camera will not suddenly become a problem. This article will help you figure out why the tire is deflating on a bicycle.
Reasons for deflating the wheel
There are many reasons why a bike might start deflating. The most common experts include:
- puncture or cut of the tire and tube;
- etching air from a nipple installed on a bicycle;
- natural wear and tear and the appearance of microcracks;
- peeling of rubber at the base of the nipple;
- the presence of a foreign object in the wheel (splinter, wire, nail);
- rim damage.
A puncture is the most common reason a bicycle is deflated. Most often, the trouble occurs when traveling in settlements where they are not too concerned about the cleanliness of the roads and when driving off-road, when the bicycle is constantly in danger of hitting a sharp stone, a piece of wood, falling into a hole with sharp edges. When punctured with a large diameter, the wheel deflects in just a few minutes, but if the bike is damaged of a small size, the situation may go unnoticed for some time. Air comes out of such a hole gradually and the bike is able to reach the house, where later the lack of air in the tire will be noticed.
- Also, quite often there are situations when the camera is damaged by a sharp object that tightly penetrates the rubber and remains inside, tightly covering the hole. In this case, the wheel is deflated very slowly and the amount of air remaining in the chamber allows the bike to be operated for several days. Do not remove the splinter trapped in the tire in field conditions. removing it can lead to a complete release of air. In this case, you will need to carry out emergency repairs, glue and reinstall the wheel on the bike;
- Very often, air “etching” occurs when the nipple is damaged or the rubber peels off at its base. Damage to the nipple itself is quite easy to determine visually when inspecting the bike. Damage or loose fit of its locking device also contributes to the release of air;
- Peeling of rubber occurs during long-term use of bicycle wheels, when the rubber at the base of the metal nipple becomes stiff due to exposure to time and weather conditions. Any mechanical impact on the problem area, including the ordinary inflation of the wheels, can lead to the detachment of the nipple. Experienced riders do not recommend wasting time and doing repairs. it will hardly be possible to restore the physical properties of rubber;
- Any tires are made of rubber, which is subject to natural wear and tear. Over time, the tread wears off, the tire becomes thinner, and its surface is covered with microcracks. It is their appearance that causes the air to “poison”. It also makes no sense to repair such a tire. it is better to put a new one right away;
- The presence of sharp burrs or chips on the bike rim can also lead to micro-damage to the tire and provoke a problem associated with a lack of air in the wheel of the bike.
Insufficient or over-inflated wheels are considered to be less common reasons for a bicycle tube to deflate. If there is a lack of air, the wheel does not have sufficient shock absorption, which the bicycle needs to easily overcome sharp-pointed obstacles; if there is an excess of pressure in the chamber, there is a possibility that it will burst.
Choosing quality wheels from well-known manufacturers will minimize the risk of it starting to deflate for whatever reason. And respect for the bike will allow you to notice the defect in a timely manner and take measures to eliminate it. Most often, if the chamber releases the pressure, you can get by with gluing it.
The wheel turns with effort
There are situations when the rear wheel of the bicycle rotates, but this requires an effort. In such cases, check the bushings. precisely. the settings of the cones.
A common cause of a jammed rear wheel is a brake failure. Troubleshooting begins with checking the brake pads. Check their position relative to the wheel rim. Both pads must be parallel to the wheel rim.
Next, check the thickness of the brake pads themselves. They wear out over time. If their thickness is 6 mm or less, they will definitely have to be changed. Otherwise, they will constantly stick and cause movement difficulties. Install the pads at an angle of convergence. This means that the front of the pads should lightly touch the wheel when you operate the mechanism.
The next step is to check the condition of the flange (the part of the shoe protruding from the wheel side). It may touch the wheel rim after prolonged use. You can fix this problem by cutting off the unnecessary part. The main thing is not to overdo it, otherwise the bike will not slow down. The disc should slide easily between the pads.
Check the presence of lubricants on the main components of the system. Pay special attention to the studs, which hold all the details. They should both be well oiled. It is best to use special bicycle lubricants for these purposes. Make sure that no lubricants come into contact with brake pads, wheel discs and other rotating parts. Otherwise, the bike simply won’t slow down at the right time.
If the above methods do not bring the expected result, check the brake cables. Friction will be much more effective if the length of the cables is correct. You can adjust their length by checking the position of the screw, which is located at the end of the cable sheath next to the lever. Apply lubricant after adjustment.
You can also clean the braid. To do this, you need to get the cable out of it. Release the clamps near the pads or lever. Then pull the cable in the opposite direction. Wash the plastic sheath with solvent to remove any accumulated dirt. WD-40 will do. Finally, return the cable back to the braid. Adjust the length. The brake pads should be 6mm from the rim. In this case, the brake lever must be released. After setting the “idle”, tighten the clamp.
What to do if the rear wheel of a bicycle does not spin
Before proceeding with the repair, you need to determine the exact type of problem. The path of its solution will depend on this. The problem of jammed wheels can be roughly divided into the following groups:
- turns slower than the front;
- can only be scrolled with great effort;
- does not spin at all.
We will consider each of the options separately. This will help you understand how to act in case of problems.
Rotates slower than front
This problem can be difficult to spot. If the rear wheel turns slower than the front wheel, it will become more difficult to drive. But the cyclist may attribute this to fatigue, poor road surface, or other factors. And only when the problem progresses to a more serious stage, it becomes easier to recognize.
The rear wheel can spin slower than the front wheel for three main reasons:
- the wheel rim is bent;
- brake pads rub against the disc;
- the braking mechanism is set incorrectly.
We blew it! Inflating a tubeless bike tire until it fails catastrophically
A bent disc can make it difficult to move. This is caused by friction and touching other parts. Therefore, the way out suggests itself. to straighten the wheel rim. The main thing is not to overdo it, so that later you do not have to bend the disk in the opposite direction.
If friction sounds are heard while driving, the brake pads are rubbing against the wheel disc. This usually happens with new bikes. This problem requires no action. All shortcomings are eliminated while driving. The pads will wear out over time and stop causing trouble.
time and effort will be spent on repairs if the malfunctions are caused by problems with the braking mechanism. You will have to revise all the elements in order to find and eliminate the cause.
The wheel does not rotate
Another problem is the complete blocking of the rear wheel when it does not rotate back or forth. It is immediately clear that something is bothering him. Typically, this is one of two things: either the chain or the brakes.
First, check the brake pads. They can simply clamp the rim, preventing the wheel from spinning. Check the brake cables and their alignment. The pads should respond to pressing the lever.
Next, pay attention to the chain. Lift it up and put it back. Check wheel rotation by turning the pedals slightly to both sides.
Even a simple bike device sometimes fails. Timely prevention and respect for your two-wheeled vehicle will help to avoid serious breakdowns. Even problems such as wheel blocking can be solved by yourself. If nothing works and the breakdown is more serious than it seemed at first glance, contact the service center.