How to fix eight on wheels bike - detailed description

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2019-01-08 18:00:38

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How to fix eight the wheels of a Bicycle - this question is in the minds of many. Eight on the wheel is the most common problem of its deformation. The main cause is loose spokes. Consider the correctness of a tension of spokes, the variety of eights and ways to fix them.how to fix eight bike Should just say: as a preventive measure to not too often wondering how to fix eight at the wheel of a Bicycle, you need at least once a season to tighten the spokes.

The Correct tension of the spokes

On the correct tension of the spokes often depend on the driving characteristics of the vehicle. The tension of the spokes is produced in the direction of a tangent of the circumference of the sleeve with three perekrashivaniya on the way from the flange to the rim. Thus the strength and elasticity of the wheel. The spokes are inserted, one inside, the other outside of the sleeve, and around the perimeter of the circle. Then the needle is inserted into the slot of the rim on top of it put on the nipple and using a nipple key a spoke tightened.

Causes deformation

In the process of operation, the bike is under load, and they are the least dependent on how you drive. Over time, the 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.

In the wheel rim can be formed three defects. Eight, “umbrella” and “egg”. Discuss in detail on each of them.

Fixed eight

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

The Tools that you need for repair:how to fix eight the wheels of a Bicycle

1) chalk, we'll mark the area with defect;

2) key-spoke;

3) it is desirable a machine for straightening the wheels, but not necessarily. The eight, small size can be removed without removing the wheel. Turn the bike wheels up and in this position it is possible to verify the correctness of wheel relative to brake pads.

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How to fix eight for Bicycle wheels? This process can be divided into several stages. The first step is to find the deformation. In the process of rotation of the wheel it is necessary to bring chalk. In the place where there are eight, will leave a mark. With this simple way you can easily determine in what place there was deformation of the rim. In the second stage produce the tightening and loosening of spokes, but only from a certain direction. If these manipulations you do it wrong, you can ruin the wheel, getting a new deformation.how to fix eight on the rear wheel of the bike

How to fix eight in the wheel of the bike? There are several ways in which it can be removed. If it is between two spokes located next to each other, then with spoke key the spoke pulls the first 1/3 turn, but spoke in the room tighten up in the opposite direction, the clamp also being relaxed by 1/3.

Quite common is the case where eight is opposite one of the spokes of the wheel. Then tightening the spokes need to produce ¼ turn and 1/8 turn you need to loosen the two spokes adjacent to it. It happens that on the deformed wheel eight changes the position of several spokes that are nearby. This case is complex and need to be very careful and adhere to the following rules: the spokes that are closer to the center, you need more force to tighten or loosen the spokes located on the edge to tighten or loosen with less force.

To determine the correct repair, you need to spin the wheel fixed and the changes should be noticeable. Activity performed by you was correct, if the wheel was smooth, otherwise you must repeat all actions again.how to fix eight on the wheel

Many are wondering how to fix eight on the rear wheel of the Bicycle. The fundamental difference between the correction on the rear and front wheel.

Radial runout

“Egg” is when the rim of the wheel becomes an oval shape, that is, when one part of the rim is closer to the center than others. “Egg” appears, usually after a bad landing and is much rarer than an eight.

How to fix eight on the bike, which in ordinary parlance is called “egg”? This is much more difficult than in the previous case.

1. The first thing to do is to remove the tire and make sure that deformed the rim and not the tire.

2. Turning the bike, spin the wheel and attach with this on top of some object. It is necessary to mark with chalk the portion of the rim that will lift this item.

3. In the third stage you need to simultaneously follow three directions: from Central spokes, slack; to tighten spokes that are close to the same number of revolutions, that was not eight; and the spokes at opposite ends of the wheel,to pull to avoid the appearance of “eggs” elsewhere. In order to fix the eight required experience, as this process is quite complex. It can start over if something does not work, first loosening and then tightening all the spokes at once.

4. After correcting the “eggs” in the same way as in example eight, we need to put pressure on the spokes all the weight - they shrink.

Edit “Umbrella”

There is such a thing as “umbrella”. This is when the rim of the wheel is shifted to one side and is not perfectly straight relative to the center of the bushing. The value of this offset will depend on the design of the frame and the type of brakes. This fault often occurs in the case of incorrect Assembly of the wheel.

how to fix eight

The Umbrella is corrected in the same way as eight. On the one hand need to tighten the spokes, and on the other to weaken for the same effort. In contrast to how to improve the eight, with the revision of the umbrella force should not fade and should be uniform around the entire circumference.

Basic rules

So, in order to know exactly how to fix eight at the wheel of a Bicycle, you need to remember a few rules.

First, dragging the spokes of a wheel, you can damage the rim. If in the process of straightening one or more of the spokes will be tightened, loosen them and the adjacent spokes, and then adjustment again.

Second, in the process drive spokes can break if they are weakened. If in the process of bearing one or more spokes of the wheel was loosened, need to tighten, then re-repeat the adjustment.

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