How defects can form and why
There is a widespread belief that the wheel can change its shape if you do NOT ride carefully, when driving over bumps or during unsuccessful jumps. This is all true. That is, all this, of course, affects the rapid wear. But the wheel can riot salesmen Not only because. When the cyclist gets on the bike, the wheels are already being loaded in the vertical direction. Further, when braking at speeds, the wheels can deform, forming eights. During maneuvering (cornering) in any direction and hard braking. In general, what is sloppy driving I think You can not explain, you yourself perfectly understand everything. So taking care of your bike can put off the problem, but over time you will come back to it anyway. Even if you ride very carefully on a good road, such is the specificity of a bicycle.
Of course, everything still depends to a large extent on the wheel rim itself, on its physical characteristics. Therefore, when buying a bicycle, one should pay the seller’s attention to such things, wondering how long the wheels can last, how they react to the deformations described above. So on cheap bicycles, the rims are correspondingly less strong. And various bends (egg and eights) of the wheels can form much earlier than on their more expensive and high-quality counterparts.
In general, how the problem can arise, I think you already understood. So let’s get straight to how to solve the problem and align your wheel.
General algorithm for eliminating problems with a deformed wheel
The general algorithm is as follows. we determine in which specific place the figure eight begins and where it ends (highlighting the lesion focus). The next step is to find the center needle in the figure eight and work with it. If our figure eight falls to the left side, we select the needles on the opposite side and pull it up a distance of less than one turn of the spoke key. Then we take two adjacent knitting needles. these will be knitting needles already on the opposite side of the previous knitting needle. it weakens them by the number of revolutions a little less (for example, 2 times less) than tightened the previous knitting needle. And so on until full straightening. That is, the next two knitting needles (they will be placed already on the opposite side) we are already tightening even weaker than the very first knitting needle. As you move away from the central spoke (lesion focus), the number of revolutions, respectively, will also decrease gradually.
If the figure eight is small by three needles.
So, again, how do you fix an eight on a bike? To fix the wheel, we select a section where there is an eight, and along the length of this entire section, weaken and tighten the spokes going one after the other. On the one side of the wheel, the spokes weaken, on the other, we tighten. When the required operations have been completed with all the spokes, we rotate the wheel again and see the correct movement of the wheel around the axis. If it gets worse, I return the knitting needles to their previous place and make the suspenders-weakening less. Thus, the skew in one direction leading to the figure eight will gradually level out. To perfectly align the figure eight, you will have to patiently and painstakingly perform all the above actions. Do not rush (i.e., twist a little).
Eight larger. to be treated as well as small.
The wheel is flattened by an egg, the straightening algorithm is slightly different. We only pull up the right side.
So, to fix your wheel you may need:
- Spoke key
- Chalk or something that can draw on the wheel rim (water marker)
- Universal plastic assemblies for dismantling bicycle tires.
We need the spoke key to loosen and tighten the wheel spokes. I must say right away that you won’t have to pull up much. You will gradually tighten the knitting needles and check the results immediately.
The types of bends that are possible in principle:
- The most common type of defects is a wheel eight;
The eight wheel tilted to the left, the dotted line shows how it should be.
Wheel with Egg Curvature. The dotted line shows how it should be.
Umbrella curvature. Dotted line as it should be.
How to fix a figure eight on a bicycle wheel
Wheel bending is an unpleasant thing
If your wheel is bent and you don’t know how to fix it, you are in the right place. I have already come across this problem and will tell you simply. repair is possible. everything is quite simple. Moreover, I will say that the problem that you are faced with will most likely arise at an enviable frequency if you love your bike and ride it several times a week. Therefore, it is worth learning this once, so that in the future you can remove the breakdown yourself every time it occurs.
- How defects can form and why?
- What tools we may need to eliminate defects?
- General algorithm for eliminating problems with a deformed wheel
- How to straighten the wheel in reality and how to determine exactly where the figure eight goes on a bicycle wheel
- . How to fix a figure eight on a bicycle wheel
Also, be sure to read the pressure to inflate the wheels of the bike here.
How to tell if your wheel is OK. Simply place the bike upside down on the saddle and on the handlebars, wheels up. Spin the problematic, as you think, wheel (spin in the sense of rotating it around the axis) and check first “by eye”. If everything is in order with the wheel, then it will rotate around the axis absolutely evenly. If there is a figure eight, then it should be visible with the naked eye, or more often something like the beating of a wheel in a certain place. It is necessary to look at the wheel in profile and in face, since the bending of the wheel can occur in different directions.
What tools we may need to eliminate defects. How to actually straighten a wheel and how to determine exactly where the figure eight of a bicycle wheel goes
How to determine exactly where the eight passes. Masters who are skilled in this business can eliminate the problem without any available means (small and other). You will have to reign the wheel first with the introduction of small ones. We spin (rotate) the wheel and gradually bring the chalk to the rim of the wheel rotating in the axle. In those places where there is an eight, the chalk will touch the rim and the Circassian serifs on it. So you define an eight for yourself.
Another great option for how to straighten a figure eight on a bicycle wheel, I spied in one. We take ear sticks. On both sides of the wheel we have front fork stays. To these feathers we cling ear sticks on the scotch tape from both sides and, just like with a crayon, rotating the wheel, gradually bring the ear sticks to the wheel rim and the places where they begin to clearly touch the rim. mark with chalk. Quite a convenient option, since it can be quite problematic to hold the chalk on the weight. If your wheel is flattened like an egg, that is, it has lost its perfectly round shape, we do everything the same as for the figure eight, only the crayon is already on the outside of the rim. where the tire with the camera should be.
As you can see from the above, the elimination of the figure eight on a bicycle is not a very difficult process, and what is the most pleasant thing is available to everyone. The only thing I want to add is that when you have done all the work of aligning the figure eight on the bike, be sure to check all the other spokes. What shouldn’t be? Spokes should NOT be loose or over-tightened. Loose spokes can break, so carefully tighten them and repeat the wheel adjustment again. If the spokes are too tight, they can pierce the pin or wheel rim. Craftsmen advise if you have tuned the wheel and everything suits you, but some spokes stick out from the wheel rim, you can sharpen them with a file so as not to pierce the camera.
As a result, I would like to say that it is better to learn to do all this yourself once. than to go to the workshop every time. Personally, I remembered the workshops as would-be masters, Who do not have time to serve everyone, so they do everything in haste. And you are the owner of the bike and you can do everything unhurriedly, unhurriedly, literally and accurately. So go ahead and buy spoke wrenches and fix your bike wheels!
Pedals on the bike find the reason here.
See more about fixing the figure eight on a bike below to get the picture right in your head.
Tape designed to prevent punctures
Indeed, protective tape can be a source of problems. It is tough, with sharp edges. If not mounted correctly, the camera can be cut.
Element is NOT fully inflated
In this case, there is sufficient shock absorption. You can get a puncture by running into, for example, a pointed pit.
Why flattens a wheel on a bicycle
The problems that are associated with the wheels are constantly accompanying outdoor enthusiasts and athletes. If a whole staff of employees is involved in the maintenance of bikes in professionals, then amateurs have to independently decide why they deflate a wheel on a bicycle.
An annoying nuisance that seems impossible to avoid. But this is only at first glance. Often we ourselves are to blame for the flatness of the bicycle wheel. What is it about? Read on.
We eliminate the problem correctly
You need to remove the camera. Pump it up and grease it with adhesive. Then apply to the patch. Wait for the glue to set and after 5 minutes the camera can be mounted.
Foreign body in the tire
We glued the chamber after a puncture, Using a Flipper tape, but the working element still constantly lowers. Perhaps there was a shard of glass in the tires. It is difficult to detect and constantly creates problems for the cyclist.
When beading and disassembling a wheel, you need to use a special tool. a bead blade. Discard screwdrivers, keys, and so on.
In the reasons leading to negative consequences
There are at least five reasons. Which can spoil your mood before a bike ride or while riding a bike:
- Normal wear and tear on bicycle tires.
- Foreign body got into Tires.
- NOT fully inflated.
- Special anti-puncture tape.
Let’s dwell on each problem separately and find out what’s the matter.
Work item pumped over
Another reason for deflating a bicycle. On the inside, the rim is glued with Flipper tape. It is she who protects the camera. The pumped-up element may tear or burst the Flipper.
Most often, a bicycle is deflating a wheel that has served its time. The tire surface becomes more viscous, we collect various debris, small glass and so on. All the little things gradually penetrate inside, right up to the camera. In total. another puncture.
In addition, holes are formed on the worn rubber, in which the bicycle tube is visible when inflated. It can simply touch the road when driving. This will inevitably lead to another unpleasant situation.
To prevent the wheel from flattening, it is important to follow the manufacturer’s recommendations. Tires indicate (min / max) recommended pressure range.
If you follow the pumping instructions, the number of unpleasant surprises will drastically decrease. Tested in practice. Good luck!
Flattens the wheel: what to do, solution to the problem and professional recommendations
Every motorist knows that a flat tire on a car is quite unpleasant, and in some cases even a problematic situation that requires a quick solution to restore the car’s performance. Today we will discuss in detail the issues related to a puncture of a wheel, find out what causes this problem, as well as how to solve and prevent it.
What to do to prevent the problem
Any problem is much easier to prevent than to fix. As mentioned above, in most cases a modern tubeless tire is pierced by a sharp object and does not immediately begin to descend. So that the active phase of this very descent does not take place on the road, when a nail sticking out, for example, gets caught on something, you need to inspect the tires daily and measure the pressure in them at least once a week.
In order not to puncture the wheel, try to avoid dangerous areas (construction site, old tram tracks, badly bumpy roads, and so on). If it happens that you notice an obstacle, but do not have time to go around it, do not make a sharp turn. The center of the wheel is much thicker and denser than the side, so it is better to drive straight into an obstacle.
Tire repair with spray
This is an alternative wheel repair option. A special spray is sprayed inside the tire. Thanks to the pressure created in the can, the liquid is evenly distributed over the inner surface. We fill the hole and create a sealed layer. If any foreign object sticks out in the wheel, it must be removed before using this composition. After sprinkling the sealant into the wheel, pump the latter, and if everything is in order, you can go to the service station. Remember that the spray solves the problem only temporarily, and if you do not carry out more significant repairs, you will soon notice that the wheel is deflating again.
What does riding a flat tire lead to?
We have already figured out how much the wheel flips in time, and as you understand, this time can be completely different. If the wheel is punctured by a nail or some other small object, it is quite possible that it will hold pressure for a while. On such a wheel, you can easily get to the tire service. You need to drive carefully. On the way, it is advisable to periodically inspect the wheel and, if necessary, pump it up. The pump, or better the compressor, should always be in the trunk!
But what if the wheel is completely flat and pumping does not help? Can I ride on a flat tire? In theory, of course, you can, but there are some unpleasant moments in such a ride. First, the trip will be extremely uncomfortable. And secondly, both the bus and the disk are likely to become unusable.
What should be in the trunk
Be sure to carry your pump and repair kit with you! The wheel can go down at the most inopportune moment, so it is better to be prepared for this. Of course, nobody canceled the spare tire either. If it so happens that you have neither a spare wheel nor tools, a simple self-tapping screw will come to the rescue. It needs to be screwed tightly into the puncture site. With a self-tapping screw, you will most likely be able to get to the tire fitting. You can always find a self-tapping screw in a car, most importantly, do not forget to return it to its place later. Thus, the minimum tool you will need to repair a wheel after a puncture is a screwdriver. But it is better to communicate with such methods.
The above tips for a quick self-repair of a wheel are relevant only in the event of a puncture. In case of cutting and other problems, only a spare tire can be a salvation. In the garage, you can already try to glue the tires with special patches, it is similar to what is used when deflating a wheel on a bicycle or motorcycle, but it is better to turn to professionals.
Tube or tubeless tires?
Most modern cars are equipped with tubeless tires. In the event of a puncture, unlike tube tires, they allow you to maintain the pressure in the wheel for some time, which is very important from a safety point of view. There are situations when the owner of tubeless wheels rides with a nail in the tires for several months before the puncture makes itself felt. Of course, we are NOT talking about significant damage. In turn, the chamber wheel immediately descends upon a puncture. Imagine what this could mean at speed. Therefore, experts strongly recommend that everyone who still has tube tires should give them up.
Tire repair using a harness
In addition to the wheel pump, it is advisable to put a tire repair kit in the trunk of a car. He will save you in case of a punctured wheel. With such a “tire kit” and the proper skills, it will take less than half an hour to repair a wheel. The set consists of the following parts:
- Awl with a slotted ear.
- Spiral awl.
- Special harness.
The repair operation is carried out in the following sequence:
- The wheel is pumped up and the puncture site is determined. It is necessary to inflate the wheel Not only in order to identify the problem area, but also for the convenience of repair.
- Now you need to carefully screw a spiral awl into the hole. It is necessary to develop a hole and prepare it for a tourniquet. To widen the hole, you need to insert and remove the awl several times.
- When the hole is ready, an awl with an eye is taken. A tourniquet up to 4 cm long is inserted into the eyelet so that the awl is in its middle.
- Awl with a tourniquet is gently inserted into the hole until you feel that the bend of the tourniquet reaches the inner edge of the tire.
- It remains only to pull out the tool sharply and cut off the extra pieces of the harness.
When the front wheel is punctured, such repairs can be carried out without removing it. Just turn the handlebars to the side and access the tires. But if the rear wheel is flat, you still have to remove it. If, after carrying out this operation, the wheel keeps pressure on it, you can safely go to the service station. However, there is nothing to be sure about, most drivers have been driving such a wheel for several years and do not know any problems. A similar procedure can be done at a tire fitting in the event that the driver does not have time for a more reliable repair.
How to determine the location of damage
Sometimes it is difficult to find out why the wheel is deflating. And even specialists sometimes get confused when they see that the tire is visually intact, but It does not hold air. There are at least several solutions to this problem. First, try pumping the wheel at 1-1.5 atmospheres and listen to where the air comes out. If it doesn’t work, dampen it with soapy water and find the spot where air bubbles appear. If that doesn’t help, dip the wheel completely into the water. It so happens that a removed wheel holds air, and if you install it on a car, it lets it through. In this case, you need to disassemble it and run it along the inner surface of the tire with a rag. If there is even a small protruding object in the wheel, the rag will surely catch on.
How to keep a car on the road in the event of a sudden breakdown
There are times when on the road, for no reason at all, the wheel is deflated. What to do to safely stop the car? Let’s analyze it step by step:
- First of all, it is worth noting a simple fact. the slower the car goes, the more likely its passengers will remain unharmed when the wheel is abruptly lowered. Therefore, breaking the speed limit, Remember this.
- If the wheel drops sharply (you will certainly feel it), do not rush to hang the brake on the floor. The subconscious mind in any emergency will make you slow down, but this is the worst thing that can be done in this case. If you brake, the car will drive even more.
- If you have cruise control turned on, turn it off as soon as possible.
- Do everything to keep the car on a straight line. If it leads to the side, turn the steering wheel in the opposite direction. But do not overdo it, otherwise you will get the opposite effect.
- Let the car drive to the stop on its own. The car will brake itself due to the flat tire. You can help her by lightly pressing the brake. Best of all, in this case, it slows down the transmission. If there are curbs nearby and do not stop on the road, it is better to drive some distance on a disc. Do not forget to turn on the alarm so that other participants are aware of your problem and be careful.
Model Lamborghini L2
Manufactured in China under Official License from Lamborghini. The whole frame is metal. The wheels are inflatable, pumped up by a car pump. Wide reversible handle with small pouch. An open basket is attached at the bottom. Parking brake available.
The bike cover is similar to the corresponding part of the stroller and has three positions. On top of the awning, there are special windows that allow you to see the child while driving. There is a wide, comfortable back with a soft pad. It is high, reaching the base of the awning. The backrest is adjustable using special metal mounts located on both sides.
There is a safety rim equipped with a lower connection to the seat. With the help of buttons, this rim is easily unfolded. Additionally there is a seat belt.
A footrest is attached at the bottom, which, when folded, is completely hidden under the bike frame. On the steering wheel there is a musical light panel that simulates the sound of the engine, the work of headlights and turn signals.
Popular models of tricycles with a handle
Let us dwell separately on the main characteristics of the most popular models of tricycles with a handle.
Lexus Trike Model
The wheels are made of high quality rubber and equipped with titanium discs. They are lightweight, resilient and quiet. Wheels, if necessary, can be inflated. There are rubberized pads on the steering wheel.
The parental handle is designed for two-handed operation, has a comfortable curved delight. Withstands heavy loads, makes it possible Lift the bike to drive onto the curb. Easily controls the front wheel, there is a large backlash. The control mechanism is located inside the bike frame. Both the handle and the frame are metal.
The steering wheel has a special lock to block turns so that the bike only moves straight.
The seat has a comfortable anatomical shape, equipped with a special pad that prevents slipping. It is possible to adjust its position.
For safety, it has a protective bumper made of durable material and covered with a soft cover. The bumper can be easily unfastened or removed. There are safety belts with a buckle and a size adjuster. Anti-slip footrests. They fold easily.
Bicycle SMART TRIKE Zoo-collection
A colorful model that has several options for bright colors, repeating the color of animals. An interesting wheel technology is double injection. Wheels are soft, silent, and will NOT puncture or deflate.
Removable Parental handle wide double, with adjustable height. There are places for storing things: a bag on the handle and a plastic box on the trunk, a stand for bottles and a phone.
High comfortable seat with soft cover. The visor has several positions and can be completely folded.
There are seat belts and a bumper that prevents them from falling out. The bumper does not unfold, it can only be completely removed.
Non-slip pedals, folding footrest. Additional functions: locking the front wheel, pedals, foot brake.
Threaded steering column
In order to raise the handlebars of a bicycle with a threaded steering column, you need to do the following:
Loosen the center bolt of the steering wheel stem, but DO NOT completely unscrew it, otherwise the wedge-retainer will come off;
Set the steering wheel to the required height and align the front wheel;
Tighten the center bolt. Please note that after tightening, the structure does not have to stagger, move up and down, and there should be no backlashes.
What tools may be needed to adjust the steering wheel?
Users who are trying to figure out how to raise the handlebars on a bicycle may need the following:
- Hex key set;
- Tension limiters that will NOT allow thread stripping (especially useful when working with components made of lightweight materials);
- (To work with old type steering columns);
- Torxes. keys with a star-shaped head will be indispensable for servicing specific stems.
How to get a stuck stem wedge?
The procedure for removing the wedge is quite simple:
- Turning the bike upside down
- Remove the wheel and fender if you have
- There is a hole in the bottom of the fork and if you look into it you can see a wedge. Take a hammer and some long object (I had a screwdriver) and hit the wedge until it flies out with the rest of the petals.
In my case, everything turned out to be much more difficult than trying to knock out the stem from the bottom did not give results, so I had to poke around from above (in the photo above you can see a wedge and two petals of the stem). I screwed the central bolt into the wedge and knock on the bolt and, loosening the bolt with my hands in different directions, tried to get it. After 30 minutes of torment, the wedge gave in, first the petals flew out, and then the wedge itself. Turned out to be a stem bummer NOT the first time in this fork! I counted two more wedges stuck in the fork stem, besides my # 128578;
A set of necessary tools
In order to change the position of the handlebars on your bike, you will need the following tools:
- Hexagons of various sizes, so the best option would be to have a whole set;
- Tension limiter. It will allow you to keep the threads in their original state when working with lightweight components such as carbon;
- Torx T20 and T25 (special type of keys). They may be needed for certain stem models.
The stem is quite easily dismantled if you first unscrew the bolt, which fixes the cover, as well as a couple of bolts that hold the structure in the assembled state. The sequence of fastening is as follows: first there is a take-out, then special spacer rings are located.
If it is only necessary to lower the steering part, the rings are dismantled and the stem is returned to its original place, and the rings are placed on top of it, after which everything is fixed with a cover.
After fixing the steering part with a bolt, you need to align the steering wheel itself and finally fasten the system with bolts. Tighten the mounting bolts gently, not over-tightening, but at the same time conscientiously.
Sometimes there is a need to reverse the process. the steering wheel must be lowered. To do this, you need the stem upside down so that it looks down. Remember, lowering the handlebars is much easier than raising. It is possible to facilitate this procedure by purchasing a special stem, which can be regulated.
Stems Available in different lengths. The pattern is simple: if you want to raise the handlebar to a significant height, opt for a longer stem model.
How to raise the handlebars on a kid’s bike?
Most toddler bikes are designed with handlebars adjustable not only in height but also in tilt. This allows you to configure the bike in such a way that riding occurs in the most comfortable and safe position for the child.
Usually, loosen the center locking nut to raise the handlebars on a kid’s bike. If the child assumes a crouched position during landing, it is necessary to move the control higher. When the baby hits the steering wheel with his knees, it is enough to change its inclination.
Advantages and Disadvantages of Handle Tricycles
Handle tricycles for kids put a lot of emphasis on handling and safety.
- The ability of parents to fully control movement. The handle is directly connected to the steering wheel. The whole mechanism is hidden inside the frame.
- Functions for securing the child. Bumper safety belts. The bumper is made of a durable base and has a soft pad. These bicycles have a low frame to reduce the risk of abrasions if dropped.
- Design. Provides a better view of the child’s position while driving and the ability to react quickly if a dangerous situation arises.
- Additional accessories. The models provide a lot of amenities. Additionally, interactive music or light panels are installed. There are many storage facilities for toys or other things: all kinds of bags, baskets, containers or stands.
- The size. Children’s bicycle is small in size, can be folded compactly, and therefore it is convenient to carry or transport in a car.
- Design. Much attention is paid to the appearance and design of models. They are bright, colorful, stylish.
However, there are some shortcomings in the overall design of bicycles with a handle. It is not possible to adjust the height of the seat or handlebar. Due to the low loads during operation, there are many plastic parts in the structure, the same wheels are often used. This creates unnecessary noise and rattling.
Kettler children’s bicycles: reliability, safety and comfort
Types of children’s Giant bikes and tips for choosing in this article.
Children’s scooter: instructions for use at the link http://klubmama.ru/sovety-roditelyam/detskie-veshhi/samokat.html