Straighten the figure eight on a bicycle wheel with your own hands

Wheel spoke adjustment

Attention! The spoke tension should only be changed with a spoke wrench, and never with pliers or adjustable wrenches.!

It will take patience to align a figure eight on a bicycle wheel, especially for first-timers. Tires must be completely removed.

Check the tension of all spokes first. Often times, the rim is bent due to their overall weakening. It is easy to check this: when the spokes are clearly dangling and obey the fingers like the strings on a guitar, then they need to be tightened by about 1 turn around the entire wheel. If such a problem is not observed, then nothing needs to be touched: this way you can only aggravate the eight.

We mark the defective area and proceed to the central spoke. the one located at the bulge. The turn of the spoke is carried out in the direction opposite to the direction of the bulge. The spokes on the sides of it are loosened. With a figure eight for three needles, the straightening scheme is as follows:

  • Tightening the central quarter turn key.
  • Weakening of the outer needles by an eighth of a turn: the weakening force is half the tension in the center.
straighten, figure, bicycle, wheel, your

Eliminating the little eight

With an eight for 7 spokes, wheel repair is done as follows:

  • The center is pulled half a turn.
  • Weaken two spokes (second and third) on the sides by ¼ turn of the key.
  • 1/8 tightens the fourth and fifth knitting needles.
  • The sixth and seventh (extreme) needles are loosened by 1/8 of a turn.

Straightening the Big Eight

The alternation of pulling and stretching is carried out in such a way that the outer needles on the figure eight are loosened. To check the result, the wheel is hung on the bike and tested for residual curvature. If the figure eight is bent in the opposite direction, you should remove all tension and increase the tightening torque on the loose knitting needles and repeat the procedure again, but with less tightening and loosening forces.

Despite the fact that you have to tinker a lot, you can achieve the ideal result. straightening the wheel to an even circle. And if the first time the work may take too long, then with the subsequent occurrence of the eight, the repair will go much faster. Now, when a defect appears on the wheel, you can not put the bike aside, but quickly adjust the spokes yourself and resume trips.

Determination of curvature on wheels

So, there is a suspicion of the occurrence of wheel deformation, and it remains to determine exactly where it was formed. Turn the bike upside down and fix it clearly.

The first method of identification is visual, which allows you to find the location of large and medium defects. The wheels must be spun strongly, since at low speeds the eights, even the coarsest ones, show poorly. The rear wheel can generally be pedaled. Curved sections move away from the plane of rotation to the side. At maximum deflection, the wheels must be quickly grasped in this place. It is not easy to do this at high speeds, and the hand can slip off, so it is better to resort to the following method.

The second method. contact, consists in marking the damaged area. As an indicator, you can take a marker, or rather a regular crayon. Spin the wheel and slowly bring the chalk to the rim. The first thing he does is strike a figure eight along the edge of the bulge. After the vertex is determined, the wheel must be spinned even more and continue to bring the chalk closer. This defines the entire area of ​​curvature. As soon as the chalk runs over the entire rim, the test can be considered complete. The focus of the figure eight will clearly stand out with a bold line against the background of a pale stripe along the entire circumference.

This is how the curvature of the rim is recorded.

Elimination of defects in a bicycle wheel

When the area of ​​curvature of the wheel is found, it’s time to start straightening it. Every owner of a two-wheeled vehicle can do it with their own hands, especially since such problems can arise with enviable regularity. There are two ways to eliminate the figure eight on your own:

  • Power straightening, or knee, as cyclists say.
  • Wheel Spoke Tightening and Loosening Method.

Power straightening

To remove the bend in this way, you will need to remove the wheel from the frame. In this case, you do not need to remove the tire with the camera. Turn the bulge towards you and grab the rim and tire on both sides. With medium deformations, the optimal grip of the wheel is position 10 and 2, that is, 60 degrees to both sides of the eight. We put the knee to the most convex area and press with force from ourselves.

What position of the wheel will best allow the rim to align? If there is enough strength in the leg, then you can press on the weight. An alternative is to place the wheel vertically with the defective section up. The help of a partner is needed here. He must firmly press the wheel to the floor. After straightening, the wheel is put on the frame and checked again by the rotation method.

This method cannot be called effective for several reasons:

  • Can’t bend small bends.
  • The rim may bend to the other side.
  • Uncomfortable.
  • Low accuracy.
  • Not every rim can be subjected to simple force so easily.
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This method works relatively well somewhere on the road, when the figure eight was formed suddenly due to a swoop on a large obstacle and it must be urgently straightened in order to reach the destination.

Eight on a bicycle wheel. fix it yourself

The spoke wheel can be safely called one of the most classic elements of your bike, as it is installed on most modern bicycles. The configuration of such a wheel includes:

  • Center bushing
  • Rim
  • Spokes

In the course of long-term operation, the wheel is subjected to significant stress and can be deformed over time. Therefore, every cyclist should be able to fix simple problems on his own.

The deformation of a wheel is called a figure eight in the event that a part of the rim deviates from the plane of rotation. With such a malfunction, you can ride a bike, but there will be no pleasure from such a walk. over, over time, the figure eight will lead to the fact that the rim will completely become unusable and will need to be replaced with a new one. Therefore, it is better not to delay and fix the problem immediately after its identification.

How to correctly identify the presence of an eight?

If you begin to suspect that the wheel is deformed, the first step is to find the place where the rim is curved. This can be done in two ways:

How to fix a buckled wheel

In the first case, you simply spin the wheel intensively and define a curved section. It will constantly move away from the plane of rotation. At this point, you need to grab the wheel with your hand and mark the deformed area with a marker. Preferring the contact method, you take a marker and rotate the wheel, drag it along the rim. The marker should make a full circle and after that you will clearly see the place of deformation.

how to identify the eight

After you have identified the area of ​​deformation, the only thing left is to eliminate the figure eight. You can easily do it yourself without asking for help from specialists. There are two main ways to eliminate the figure eight:

  • Power method
  • Tightening method

Experienced cyclists do not really trust this method and resort to it in the event that the deformation of the wheel caught them suddenly on the road and you need to fix the malfunction in order to get to the destination. In order to correct the figure eight by force, it is necessary to remove the wheel from the frame, turn the deformed section towards you and firmly grab the rim and tire on both sides. Press the deformation area with your knee and press away from you with maximum force.

It is difficult to call this method effective due to the following reasons:

  • You will not be able to eliminate small bumps
  • There is a risk of bending the rim the other way
  • Eliminating the figure eight by this method is very inconvenient.
  • Some rims are simply not subject to human force

Eliminating the adjustment by tightening the spokes

Having mastered this simple method once, you can quickly and accurately fix the malfunction and calmly enjoy a fast ride on your favorite bike.!

Straighten a bike wheel with the simple “Gt” method (truing)

elimination of the figure eight by pulling the knitting needles

Defect elimination tools

To repair your vehicle yourself, you will need the following tools:

  • marker or chalk;
  • plastic assemblies for dismantling the tire;
  • spoke wrench.

How to remove a figure eight on a wheel

  • – key for tightening the spokes;
  • – marker.

Another repair scheme looks similar. Also put the bike down and spin the wheel slowly. Move the rim to the place where it clings to the brake pads, slowly and carefully, with the bent side. Mark this position with a marker. Then look at the bike model. In some, if the damage is on the right side, the knitting needles do not need to be pulled, but rather relaxed, and on the left just pull. In other models, the opposite is true. At the same time, do not forget to count the number of revolutions that you make when tightening and loosening the spokes. This is what will be the key to uniform straightening. And it is best to do it in parts. first tighten / loosen a little, then look. Then continue if necessary.

Consider some of the nuances that make it difficult to repair a bicycle, according to the basic principles. So, for example, some manufacturers can rivet the nipples on the spokes so that they do not unwind when driving. However, they often fold over part of the spoke. And in this case, twisting (pulling) the spoke can only lead to additional problems, for example, thread stripping. Another complication can be caused by the material from which the rim is made. If it is duralumin, straighten the figure eight on it. the task is quite difficult. First, you have to loosen almost all the needles and only then eliminate the defect. And only then center the wheel by pulling the spokes back.

If, despite your best efforts, the figure eight does not disappear, but rather moves, your best bet is to take your bike to a workshop. But you are guaranteed to return a bike with smooth wheels without signs of even slight deformation.

Wheel spoke adjustment

Attention! The spoke tension should only be changed with a spoke wrench, and never with pliers or adjustable wrenches.!

It will take patience to align a figure eight on a bicycle wheel, especially for first-timers. Tires must be completely removed.

Check the tension of all spokes first. Often times, the rim is bent due to their overall weakening. It is easy to check this: when the spokes are clearly dangling and obey the fingers like the strings on a guitar, then they need to be tightened by about 1 turn around the entire wheel. If such a problem is not observed, then nothing needs to be touched: this way you can only aggravate the eight.

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We mark the defective area and proceed to the central spoke. the one located at the bulge. The turn of the spoke is carried out in the direction opposite to the direction of the bulge. The spokes on the sides of it are loosened. With a figure eight for three needles, the straightening scheme is as follows:

  • Tightening the central quarter turn key.
  • Weakening of the outer needles by an eighth of a turn: the weakening force is half the tension in the center.

Eliminating the little eight

With an eight for 7 spokes, wheel repair is done as follows:

  • The center is pulled half a turn.
  • Weaken two spokes (second and third) on the sides by ¼ turn of the key.
  • 1/8 tightens the fourth and fifth knitting needles.
  • The sixth and seventh (extreme) needles are loosened by 1/8 of a turn.

Straightening the Big Eight

The alternation of pulling and stretching is carried out in such a way that the outer needles on the figure eight are loosened. To check the result, the wheel is hung on the bike and tested for residual curvature. If the figure eight is bent in the opposite direction, you should remove all tension and increase the tightening torque on the loose knitting needles and repeat the procedure again, but with less tightening and loosening forces.

Despite the fact that you have to tinker a lot, you can achieve the ideal result. straightening the wheel to an even circle. And if the first time the work may take too long, then with the subsequent occurrence of the eight, the repair will go much faster. Now, when a defect appears on the wheel, you can not put the bike aside, but quickly adjust the spokes yourself and resume trips.

Sometimes the figure eight can be seen with the naked eye, sometimes to identify it you need to carry out a simple procedure with a crayon or a marker, which is described below.

First of all, you need to understand why the figure eight is formed. Poor rim material, riding on uneven surfaces, maneuvering and hard braking, regular bumps and bad jumps, and most importantly, loose or too tight spokes.

There are several types of deformation:

  • The figure eight is the most typical deformation when part of the rim is bent and goes out of the plane of rotation of the wheel;
  • Egg. the wheel is flattened and is not a circle, but an oval;
  • Umbrella. the rim of the wheel is not located in a plane passing exactly in the middle between the tips of the hub; at the same time the bike tends to go to the side.

To fix a figure eight on a bicycle wheel, use:

  • Spoke wrench for loosening or tightening;
  • Crayon or felt-tip pen for drawing on the wheel rim.

Correcting the figure eight

How to fix a figure eight on a wheel? Eight in this case is when some part of the rim does not coincide with the plane of rotation.

Tools that will be needed for the repair:

1) chalk, with its help we will mark the area with a defect;

3) a wheel straightening machine is desirable, but this is not necessary. The small figure eight can be removed without removing the wheels. Turn the bike upside down. in this position, you can check the correctness of the wheel relative to the brake pads.

How to fix eights on bike wheels? This process can be divided into several stages. The first step is to find the deformation. During the rotation of the wheel, it is necessary to bring the chalk closer to it. In the place where there is an eight, a trace will remain. With this simple method, you can easily determine where the deformation of the rim has occurred. At the second stage, we tighten and loosen the knitting needles, but only from a certain side. If these manipulations are performed incorrectly, you can further damage the wheel by getting a new deformation.

How to fix a figure eight on a bicycle wheel? There are several ways in which it can be removed. If it is between two knitting needles located next to each other, then using a spoke key, tighten the first knitting needle by 1/3 of a turn, and twist the knitting needle next to each other in the opposite direction, while we also loosen the clamp by 1/3.

Quite common is the case when the figure eight is located opposite one of the spokes of the wheel. Then pulling up this knitting needle should be done by ¼ of a turn, and by 1/8 of a turn it is necessary to relax the two knitting needles located next to it. It happens that on a deformed wheel, the figure eight changes the position of several spokes located next to each other. This case is difficult, and you need to be very careful and adhere to the following rule: the knitting needles that are closer to the center should be tightened or loosened with more force, and the knitting needles located at the edge should be tightened or loosened with less force.

In order to determine the correctness of the repair, it is necessary to spin the corrected wheel, and the changes should be immediately noticeable. The actions you performed were correct if the wheel became level, otherwise you need to repeat all the actions again.

Many are wondering how to fix a figure eight on the rear wheel of a bicycle. There is no fundamental difference between fixing on the rear and front wheels.

The process of repairing an egg-type rim defect

Unlike figure eight, we pull the knitting needles in the right direction on both sides! Otherwise, the repair of the ellipse will lead to the emergence of the already known figure eight. For example, if the center needle needs to be pulled up by 1/4 turn, then the next. by 1/8.

Elimination of defects in a bicycle wheel

When the area of ​​curvature of the wheel is found, it’s time to start straightening it. Every owner of a two-wheeled vehicle can do it with their own hands, especially since such problems can arise with enviable regularity. There are two ways to eliminate the figure eight on your own:

  • Power straightening, or knee, as cyclists say.
  • Wheel Spoke Tightening and Loosening Method.
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Contact spokes adjustment

Suppose there is a slight curvature between two adjacent spokes. In this case, one of them must be tightened by a third of a turn, and the adjacent one must be loosened exactly the same.

How To True A Bicycle Wheel

It happens that the figure eight is located opposite a certain spoke. In such a situation, it is necessary to tighten this spoke by a quarter of a turn of the spoke key, while loosen the two adjacent spokes by 1/8 of a turn.

If the curvature is significant in size, then you should start by checking the total spoke tension. It often happens that they are loose and dangling, it is necessary to tighten the weakened units by one revolution.

We mark the area of ​​curvature with a marker and proceed to the adjustment. Find the central spoke located in the zone of maximum bulge. It must be understood that for correct adjustment, it is necessary to loosen the side where the rim bent, while simultaneously pulling the opposite side with the same force. This condition must be strictly fulfilled, otherwise curvature in the radial direction will occur.

Let’s start by loosening the center spoke of the figure eight by half a turn. To correctly perform this technique, you need to turn the knitting needle by ¾ and return it back by a quarter. This promotes correct shrinkage of the nipple.

Two adjacent knitting needles must be tightened by the same number of revolutions. Performing this operation, we gradually move to the edge of the curvature. The next group of spokes is adjustable with a decrease in the number of revolutions. If the first knitting needles were twisted by half a turn, then it was necessary to finish in one eighth.

Loosening and tension alternate so that the outer spokes are loosened on the figure eight.

After completing the adjustment, it is necessary to scroll again and mark the residual curvature. If a reverse figure eight appears, it is necessary to increase the tension on the weakened knitting needles and loosen on those that tightened.

Then you need to remove the wheel, pull out the axle, resting the sleeve on the floor, press the rim with your weight. After turning the rim over, do the same operation. A small crackling sound will be heard. this is normal, the spokes are shrinking. Then check the wheel again for distortions.

In order to achieve the perfect result, you will have to tinker a lot the first time. But with each adjustment, the process will take less and less time. Very soon, even on a trip, it will be possible to quickly fix the defect.

Recommendations for eliminating deformation of the rim

If you are interested in the question of how to remove the figure eight on the front bicycle wheel or the curvature of the rim on the rear wheel yourself, consider the following nuances. Above all, avoid over-tensioning the spokes. this could damage the rim. If some of the knitting needles are too tight during the adjustment, you need to loosen these and adjacent knitting needles and re-straighten.

If the spokes are too loose, they can break when rolling. These needles need to be retightened and re-adjusted. Precision and meticulousness are essential in correcting any deformation of the rim. If you rush to correct such a defect or neglect the adjustment rules, the work will have to be redone.

We bring to your attention another informative article. how to choose the size of a bike for your height.

Determination of curvature on wheels

So, there is a suspicion of the occurrence of wheel deformation, and it remains to determine exactly where it was formed. Turn the bike upside down and fix it clearly.

The first method of identification is visual, which allows you to find the location of large and medium defects. The wheels must be spun strongly, since at low speeds the eights, even the coarsest ones, show poorly. The rear wheel can generally be pedaled. Curved sections move away from the plane of rotation to the side. At maximum deflection, the wheels must be quickly grasped in this place. It is not easy to do this at high speeds, and the hand can slip off, so it is better to resort to the following method.

The second method. contact, consists in marking the damaged area. As an indicator, you can take a marker, or rather a regular crayon. Spin the wheel and slowly bring the chalk to the rim. The first thing he does is strike a figure eight along the edge of the bulge. After the vertex is determined, the wheel must be spinned even more and continue to bring the chalk closer. This defines the entire area of ​​curvature. As soon as the chalk runs over the entire rim, the test can be considered complete. The focus of the figure eight will clearly stand out with a bold line against the background of a pale stripe along the entire circumference.

Causes of deformation

During operation, the bike experiences stresses, and they are least dependent on how you ride. Over time, there is a process of changing the geometry of the wheel rim, that is, its deformation. How quickly it happens depends mainly on the quality of the rim.

Three defects can form. This is a figure eight, an umbrella and an egg. Let’s dwell on each of them.