How to disassemble or reassemble the rear wheel of a speed bike
Removing the wheels from the frame is part of a mandatory bicycle maintenance procedure. Sooner or later, the wheel of even the most advanced bike will present surprises in the form of deformation of the rim, damage to the spokes, a burst tube or even the entire tire, as well as wear of the sprocket system for the rear wheel.
Experienced cyclists welcome self-repairing wheels, and it is no coincidence: it’s cheaper, and you will gain skills. You can also go to a good workshop, where the problem will be solved, perhaps faster, but not free of charge. over, the service is hardly located under the windows of the house, so the bike will have to be dragged, which is not very pleasant. To avoid this, it is better to tinker a little yourself, especially since there is nothing complicated about the wheels. Today we’ll talk about how to remove the rear wheel from the bike, repair it and assemble it correctly.
How to put the front wheel back
To put the wheel back, you need to do the same as when removing, but in reverse order:
- We put the wheel in the mount so that the rotation is not confused. The direction of rotation is written on the tire, but the Honor needs the bike to be upside down. This is done in order to avoid when driving “eights”, because the wheel tire is arranged according to a special technology.
- We fasten the wheel with a nut or eccentric firmly enough so that it does not fly back when driving.
- Flip the bike.
- Putting the brakes back as they were if you have rim brakes installed.
After that, you need to check the wheel: how it turns and whether it brakes correctly.
Removing the cassette and bulkhead bushing
A hub is one part of a bicycle wheel that requires periodic maintenance. On average, you need to look into it once every 2000 km of run, in terms of time it is 2-3 months of active driving. If the wheel is already creaking and there is a decrease in the efficiency of rotation, in other words, the great rides worse, then it’s time to remove it and inspect the hub.
The main problems with the bushing are backlash and insufficient lubrication of the bearings. Due to a violation of the fit or increased friction, the parts begin to wear out rapidly. If the wheel has not been serviced for a long time, the bearings may crumble altogether. To gain access to the bearings of the hub, you will need to temporarily get rid of the rear sprockets.
The rear speed device is removed using a puller and a so-called whip. Removing the cassette is a short-lived affair, but it will take a lot of effort to unscrew it from the wheel. In stages it looks like this:
- The stripper is inserted into the cassette nut.
- The whip holds the large star of the system so that it does not turn.
- With a wrench, the puller rotates, unscrewing the slotted nut.
- We remove the small stars that are installed on top, carefully fold them to the side along with the washers, and then remove the cassette itself.
Before disassembling the hub, you should slightly loosen the spoke tension. This can be done using a round key with knock-out holes for different diameters of the knitting needles. You need to loosen a little, a quarter of a revolution is enough. If the sleeve needs to be replaced, then the spokes must be unscrewed enough to easily pull it out of the engagement.
A complete bushing replacement is required if both the axle and the bearings become unusable. However, often when the bushing is jammed, the axle is in normal condition, it is enough to change the bearings. Often, both will still serve faithfully if they are well lubricated. Proper lubrication will prevent parts from wear under dynamic loads.
Speed bike rear hub diagram
The bulkhead of the axle part of the wheel is associated with cleaning the axle and bearing balls from dirt. The removed parts must be temporarily placed in a solvent, then allowed to dry, lubricated and reinstalled. Bearings in a skewed position must be adjusted by returning them to a straight position. However, during the backlash, the parts are already faulty, so replacement is the best option.
- Jet ski
- Rock climbing
How to remove the rear wheel
Removing the rear wheel is as easy as removing the front. However, before removing the rear wheel from the mounts, you must first remove the chain from the axle, and also open the brakes so that they do not interfere.
The wheels must be properly fitted to the bike frame. Misalignment can lead to problems with shifting and adjusting the bike. If the wheel is not securely fixed, then it can fall off during the ride and injure the cyclist.
Rigid axle bushings use axle nuts on the outside of the frame plate. The axle nut contains a washer built into the axle nut or a separate washer. If the washer has teeth or knurls, then they are connected to the recess to secure the wheel. Lubricate the threads on the axle when the wheel is mounted on the bike.
It is often easier to mount the front wheel when the bike is on the ground. When placing the bike on the ground, the axle must be completely in the pad on the frame.
Make sure that the cam lever for locking the axles of the wheels is in the open position and that its brakes are open.
Place the wheel in the pad on the frame. Make sure the hub is fully seated in the frame or fork.
- On the rear wheel, first turn the gear back and place the smallest gear between the top and bottom of the chain. Place the wheel between the brake pads, hooking the smallest gear on the chain.
- Cam mechanism for securing the axles of the wheels: tighten the axle so that the lever meets resistance at 90 ° from the frame or fork.
- Straight axle: move the axle in place and turn clockwise until it stops.
- Solid axle: tighten both nuts on the axle until they stop.
- The use of a torque wrench is recommended. However, if it is not available, an effort must be made. For 25 Nm, apply about 40 pounds of pressure to the end of a 5 “wrench.
Determine the end position of the lever closing. Rotate the front arm and adjusting nut so that the arm ends up just at the front of the fork. Place the rear arm between the chain support and the seat. Reposition the lever as needed if it is not fully closed.
Re-remove the brake mechanism if applicable.
Make sure the wheel is in the center of the frame or fork. Loosen the nuts on the axle and, if necessary, adjust the center of the wheel in the frame and retighten.
Make sure the brake pad rim is centered on the wheel and adjust as needed.
When to remove the rear wheel
It is unlikely that the idea of unscrewing the chassis from the bicycle frame would just come to mind, unless, of course, a person specializes in bicycle dismantling. But this is a completely different case. Dismantling the rear wheel will be required if the following problems are observed:
- noticeable damage to the rim;
- complete wear when a wheel needs to be replaced;
- a flat tire or a burst tire;
- bulkhead bushing.
This includes the planned replacement of the rear sprocket system and chain.
Before removing the bike, turn it over and place it on the saddle and handlebars. It is better to remove awnings in the form of a mirror, a bell and a lantern in advance so as not to damage them under the weight of the frame. V-brakes are first released and disassembled, otherwise they will not allow the wheel to be pulled out freely. With disc models, everything is easier. you can immediately remove the wheel.
I must say that the removal process itself consists only in unscrewing the eccentric or unscrewing the fastening nuts from the axis of the bushing, who has something. If the mount is an eccentric, simply unscrew the handles and twist the wheel. The nut fastening is loosened with one or two wrenches.
Usually one wrench of the appropriate size is enough, with which the nuts are removed one by one. If the hub axle turns, then the nuts are unscrewed simultaneously in different directions. It is recommended to use open-end wrenches or box wrenches. The adjustable version is undesirable, as its thick horns “eat up” the corners of the nut due to loose fit and sliding.
Step by step instructions
There are different reasons for bushing and bearing breakage. Repair work can be done by hand, the steps are as follows:
- Using an adjustable wrench, the lock nut is loosened;
- The flare nut is loosened;
- The wheel is removed;
- The retaining ring is removed;
- The hub axle is dismantled
- Elements that are located on the opposite side from the sprockets are dismantled;
- All elements are tested;
- Broken part changes;
- The block is fully assembled.
The rolling device is characterized by the following features:
- The design is represented by a combination of two mating elements that have grooves.
- Steel balls are inserted into the created grooves. Due to their even distribution, the degree of friction is reduced. Therefore, the structure serves for a long period.
- The balls are fixed with cages. They are represented by special metal partitions that can withstand significant loads.
A similar embodiment is used to create movable units that must withstand high loads. Examples include bushings, carriages and steering columns.
The advantages include the following:
Front Wheel Bearings. How to access and change them out for MORE SPEED!
- It is possible to carry out the adjustment in the field.
- You can carry out installation and dismantling yourself, this does not require a large set of tools.
- Some designs are collapsible, elements can be changed separately.
Bicycle Rear Wheel Bearing Replacement
A bearing is a part that ensures the performance and fixation of the moving parts of the bike. This element is present in all structures that provide mating of parts or rotation of the mechanism. If a part fails, replacing the bearing of the rear wheel of a bicycle will not cause you any difficulties, but you need to understand the nuances.
Service A Bike Wheel’s Cup And Cone Front Hub
Rear Wheel Hub Parts Overview
To maintain the part in proper condition, prophylaxis in the form of regular lubrication is necessary, as well as timely replacement. When replacing a bearing, it is important to select the correct product for the given assembly. It is equally important to pay attention to quality, appearance and other characteristics. If you make a mistake by installing the wrong device, the entire bike may break down, and this is a direct threat not only to the vehicle, but also to your safety.
In what cases to change
The bushing and bearings must be regularly inspected, tested, retightened and lubricated. This important block cannot be “started”, otherwise the bike will not be able to move normally. Signs When Paying Attention to Rear Hub Bearings:
- while the bike is moving, noise is heard in the area of the rear wheel fixing unit;
- wheel play becomes excessive;
- there is a sharp creak and “crunching” of the bearing;
- rolling dynamics deteriorates.
If you do not pay attention to the “first signals”, then the situation will worsen, the bike will quickly fail. Before the start of the warm season, you should:
- Checking the wheels for an important parameter. backlash, the bearings must not be tightened too much;
- Dismantling of wheels and frame must be carried out in a specialized room.
In other cases
Bearing performance also depends on the bicycle bottom bracket (open or closed), which is subjected to significant mechanical stress. Installing bearings in a bicycle bottom bracket is a complicated operation. The open carriage functions thanks to bearings that are based in “cups”, they are mounted in the carriage sleeve and installed in the frame tube.
Represented by parts that are fully inserted into the part. The use of a sealed housing reduces the likelihood of dust and dirt getting into the structure, thereby increasing the operational life.
Replacing the bearings in the carriage
The carriage of a bicycle can be open or closed; the operation of the bearings depends on its type. For example, the open one rotates thanks to the bearings in the cups installed in the bottom bracket and built into the frame tube. This is a complex unit, since it is subject to external influences more than other parts of the bicycle, which means that they need to be changed often. The carriage cup can have different sizes and threads depending on the type and model of the bike.
In closed carriages, the bearings are protected, so dirt from the street cannot spoil them.
Disassembly and replacement of bearings on the front fork
The wear of the hinge assembly of the fork manifests itself in backlash, heavy steering and extraneous sounds from the speaker. It is not recommended to postpone the problem indefinitely, because the serviceability of the steering, along with the brakes, is a guarantee of safety.
How do I change the bearing for the fork? At first glance, getting close to him is not easy. The assembly is securely pressed and hidden in the head tube. However, in practice, everything looks simple:
- Turn the bike over and unscrew the front wheel.
- Put the bike in the normal position and pull out the stem with the stem (you need a wrench or hex for the inner nut).
- Unscrew the lock nut with an adjustable wrench and pull out the lock washer.
- Unscrew the cup.
- After dismantling the housing, carefully remove the bearing itself. The parts on the forks of most bicycles are not equipped with separators, so we make sure that the balls do not scatter.
- Inspect all components carefully. Be sure to replace rusty, knocked-out balls with new ones.
- Clean the glass, bearing and cup from dirt, and then lubricate thoroughly.
The installation of the fork is carried out in the opposite order: after pressing in the bearing, the glass is twisted, then the washer and the lock nut are thrown. Checking the tightness of the glass: when the bike is tilted, the front wheel should deviate from the straight position by 15. 20 degrees. If it practically does not move, it is necessary to loosen the hinge. A large deflection of the wheel indicates a weak tightening, and the glass needs to be tightened.
Front rack types
There are not many offers for these bike mounts. Consider the most popular.
- Basket. This type of rack is ideal for city bikes. It can accommodate purchased products or things that require constant attention (gadget, camera, etc.). It is much safer to ride with such a bike rack. Packaged purchases do not need to be hung on the steering wheel, which, when driving, can fall into the spokes of the front wheel and lead to a fall or simply burst during movement. The basket is widely used due to its practicality and on ladies’ bicycles.
- Pet baskets. They began to gain particular popularity among owners of dogs, cats and other medium-sized animals. Such a device can make an ordinary walk or a whole bike tour especially enjoyable and interesting.
- Bicycle rack with suspension fork mount. Among other types of front racks for bicycles, the most common. You can attach both a bag and a basket to it.
- For side bags. This type of rack is widely used by cyclists who make long journeys. Since these hikes require a lot of food and provisions, such front racks are appropriate. However, you can place no more than 7 kg. Also, such placement of the load allows you to reduce the overall center of mass of the bike, improving its handling and stability when riding.
- V-Brake type trunk. Suitable for those bicycles that have holes for mounting a fender and rim (disc) brakes. Such a system is installed using bolts. The main thing is the size of the wheels of Honor.
How to choose the right one?
Take this bike accessory seriously enough and be guided by your personal preference. Going on a trip, you must be 100% convinced of the reliability of the fastenings of the structures. The selected luggage system must withstand the required load and not break the bike. At the front, roof racks are usually bolted or strapped to the fork. Ideal when the purchased bike already has a fixed trunk. However, this pleasure is very rare.
When choosing a design, take into account several important points.
- Be sure to take your “war horse” with you. This approach will allow you to choose the optimal model of the trunk for the bike.
- What kind of braking system: disc or rim.
- Estimated load.
- The trunk must be strong and lightweight.
- The width of the structure should be as close as possible to the size of the bike bag.
- Reliability of fasteners, the presence of clamps for the load is welcome.
- Give preference to a collapsible device over a one-piece
- Pay attention to the protection of the wheel spokes from falling into them bags.
Of particular importance is the material from which the roof racks are made. The lightest are aluminum and titanium (weight no more than 500 g). Steel is heavier (about 1 kg), there are also lighter options. Knowledgeable cyclists are more likely to choose steel or titanium structures. The first ones are presented by an affordable price and ease of repair.
Pay attention to the quality of the steel, it must be high.
You have to ride in different weather conditions, and if the steel trunk is made of low-quality raw materials, it will corrode over time. Titanium ones are the most expensive, however, they cannot be repaired and restored.
Today, there are a sufficient number of bicycle workshops offering services for the manufacture of individual luggage racks for a specific bicycle model. This option is the most correct one, allowing to solve the most pressing issues of strengthening or lightening the elements of the system.
Features of the
The main feature of front bike racks is the type of attachment. Namely, the load on the suspension fork is increased. The fastening must be secured so that both the luggage is securely fastened and the fork works. It so happens that very few holes are missing to securely fix the system. Experienced cyclists use additional brackets or clamps, having previously placed a rubber gasket under the frame in order to avoid damaging it.
There are also differences in the method of attachment: in one, the trunk is attached to the arc of the rim brakes and is able to withstand a weight of up to 5 kg, in the second it is attached to the steering column with a load of up to 8 kg.
Experienced cyclists know that maneuverability suffers greatly from such an arrangement of the structure, and the view under the wheel is almost completely lost. The use of such a bicycle accessory requires a certain amount of experience in driving. If you are a beginner, do not overload the front wheel with a load.
The front bike rack is ideal for those looking to travel miles on a flat road. By fixing such a structure on a mountain bike, you will be able to avoid falls if you have to climb a mountain.
Front racks. a real find on a touring bike.
These models are designed for maximum comfort and have the ability to carry bulky luggage. These bicycles are preferred by those who make long-distance trips for many days.
Front bike rack: types, features, recommendations for choosing
Every bike lover knows that a ride on this type of transport is a lot of pleasure. And you don’t have to be a bike tourist and get out somewhere in the mountains. An ordinary walk around the city and its environs will bring no less positive emotions. However, over time, we begin to realize that riding with a heavy backpack over our shoulders is not so pleasant. In addition, the back gets very tired from the load. The ideal solution is to buy a bike rack, which provides an opportunity to increase the carrying capacity of a two-wheeled friend.
When used correctly, items such as bike racks serve their owners faithfully for many years. Oftentimes, the weak link is hidden in the bindings. Bolts are often sheared off. Such a breakdown occurs due to loose bolts. Another malfunction is due to an incorrectly distributed load. The rack or other structural elements burst.
There are no problems with steel, you need a conventional welding machine, which cannot be said about aluminum ones. Titanium bike racks are harder to break, and your grandchildren can get them too.
The following video provides a detailed overview of the different bike basket models.