The STELS FOCUS bike creaked. the reason for the rear fork bushing
The reliable and popular Focus stealth bike or stealth navigator served me faithfully for five years, but at some point the creak of the pedals became simply unbearable, even the music in the headphones does not muffle. It is characteristic that it starts to creak at the moment when you turn the pedals; if you roll along, there is no creak. But besides the squeak, there was a significant backlash in the rear fork and wheel, i.e. if you shake the rear wheel, it just dangles. The problem turned out to be not easy, because repair kits on sale are not completely suitable for replacing stealth and adrenaline.
Replacing the rear fork bushing on double suspension
Why does my STELS bike squeak when pedaling?
A significant miscalculation in the design of the STELS two-suspension mountain bike is a caprolon sleeve in the frame. Even a new bike will creak after the rain, the hub is not protected from dust and dirt, which flies from under the rear wheel just on it. As you pedal, you completely transfer your weight from one side of the bike to the other, causing a squeak in the dirt and dust-clogged rear suspension assembly of the bike. Of course, if you disassemble the bike once a week and remove dirt with subsequent lubrication of the rear suspension unit, it will not creak, but:
- To lubricate and clean the bushing, it is necessary to remove the connecting rods, and then disassemble the bushing itself. quite a gemoric occupation
- A backlash of the rear suspension is formed in any case, a bushing made of plastic 1 mm thick at such loads just has to be squeezed out and flattened, which actually happens over time.
When I began to understand the problem, I found a repair video. as it turned out, such a repair fixes only part of the problem, rear wheel play.
And even then not for long, the aluminum foil as a sleeve under significant load quickly turns into dust and the problem resumes.
How and with what to replace the bush on the STELS double suspension
After talking with smart people, I came to the conclusion that the bushing should be made of bronze or brass, which does not care about corrosion, but in terms of strength it differs significantly from caprolon and will last a long time, without maintenance.
This means you need to look for a turner, draw a drawing and all that, because a turner, if you tell him to carve a sleeve, will immediately require a drawing. And without a drawing, he will look at you like an idiot and send you through the forest.
Rear fork hinge bushing drawing
It’s good that among my friends there is a turner and a jack of all trades, turning to him, I got the right part without any problems in a couple of days.
I collected all this happiness for a thick bicycle lubricant for bearings. I’ve been driving for a month on a new bushing, there is no backlash, nothing creaks. beauty!
If you live in Chelyabinsk, I can give the phone number of my friend turner, call 89227229100.
How a bicycle wheel works: useful for every rider to know
The main Bicycle structure How a bicycle wheel works: it is useful to know for every rider
In order for the mechanism to work without interruption, every detail is important. But there are those among them that bear the greatest loads during operation. Of all the components of a bicycle, of course, the wheels get the most. they have to take on both the bulk of the cyclist’s weight and shock, which cannot be avoided on uneven roads.
Bicycle wheel structure: about every detail in detail
Cycling, especially off-roading, carries the risk of breakage. Therefore, in order to understand the cause of the malfunction, it will not be superfluous to know what a bicycle wheel consists of. It does not include too many details that even a beginner will easily remember a list of: hub, rim, spokes and tire. In this article you can find a detailed description of each part of a bicycle wheel.
The bushing is a small component that performs a very important mission. It is with its help that the bicycle wheel is fastened to the frame. The hub consists of an axle and a pair of bearings, connected to the rim thanks to the spokes.
Hubs are very diverse depending on the position, fastening, material from which they are made and the structural features of the bike itself.
- The position of the sleeve directly affects its function. The front hub only secures the wheel of the same name and ensures its rotation. The device of the rear wheel of a bicycle provides for additional work for the corresponding hub. to carry a cassette or a ratchet (and what it is, you can read here). By the way, the bushing for the cassette is superior in strength to that for the ratchet.
- The bushing can be secured with two nuts or an eccentric. And if in the first case you cannot do without a wrench, then in the second the wheels are removed easily and quickly without the use of additional tools.
- Depending on the type of brake system (V-brake or disc), the hub either provides special mountings for the disc brake, or not.
- Depending on the material used for the manufacture, this part of the bicycle wheel can also be of two types: aluminum or steel. The first option is preferable. it is lighter in weight and less susceptible to corrosion, but it will also cost more in terms of cost.
- The number of spokes also affects the type of hub: there are options for 32 or 36 spokes. Based on this number, you need to choose a suitable rim.
The device of a bicycle wheel is not complete without such an important part as the rim.
It is its shape that determines how the wheel looks as a whole. The rim is the outside of the wheel, protected from the outside by the tire.
Rims are made of steel, aluminum, magnesium. The preferred option is the aluminum rim: this material is lightweight, durable and resistant to corrosion. Steel is more susceptible to it, and magnesium is not as strong.
Depending on the type of brakes provided by the design of the bicycle wheel, there may or may not be a plane on the rim for pressing the brake pads. It is needed if a V-brake is used.
The high rim is better protected from bending outward or inward from the center (such a malfunction is called “egg”), and wide. from curvature to the right or left of the direction of travel (a problem with the name “eight”).
In terms of strength, the rim can be single, double, triple, reinforced. If your budget allows, choose at least a double rim!
Bike Maintenance: How to Remove a Rear Wheel with a Thru Axle
In order to prevent the spoke from sticking into the chamber during impact, there is a special protection. rim tape. The part will help to avoid more substantial repair costs.
Spokes are an important part of the mechanism of both the rear and front wheels of a bicycle. They perform several functions at once: they provide fastening of the hub to the rim, center the wheel, evenly distribute the loads, and affect damping. Spokes are steel, aluminum, bronze, titanium.
By varieties, they are divided into rolled, drawn and flat. The first option is the simplest and cheapest, optimal for beginners, the second will cost more due to superiority in lightness, and the third is the most expensive due to its excellent aerodynamic characteristics.
The device of the front wheel of a bicycle, as well as the rear one, necessarily includes a tire. It consists of a tube and a tire.
The camera is necessary so that minor irregularities on the road become invisible. It consists of a rubber tube in the form of a ring and a nipple through which it is filled with air.
The tire is needed to protect the camera from sharp objects that can meet on the road, and to grip the wheel with its surface.
When choosing a tire tread pattern, be guided by the conditions in which you have to ride: suitable for mud, sand, snow “toothy” tread, smooth is preferable for a smooth road.
Here are the main parts, the presence of which provides for the layout of the rear and front wheels of the bike Although it is generally the same for each of them, there are still differences between the wheels. What are?
What are the wheels?
Before you know what a standard bicycle wheel layout includes, it is worth familiarizing yourself with general information about this important part.
- 14 inches. size for the smallest cyclists under the age of four.
- 16 inches. for older riders: 4.5 to 6.5 years.
- 20 inches is chosen by children 8-11 years old.
- 24 inches. option for teenagers and those who practice jumping on a bike.
- 26 inches. “standard” for adult mountain bike.
- 28 inches in diameter most commonly found on adult road and hybrid bikes.
How the rear wheel of a high-speed bike works: compare with the front
The front bicycle wheel and the rear wheel differ from each other not only in design features, but also in the load that each of them takes. Most. over half of the cyclist’s weight. comes from the rear wheel. Therefore, the design of the rear wheel of a bicycle provides for all these nuances: for example, the hub that attaches it to the frame is much stronger than its partner in front.
The functions of these seemingly identical parts are also different: stability is ensured by the front wheel, and traction is provided by the rear.
Is the rear wheel arrangement of a high-speed bicycle (road, mountain, children’s, stealth) different from the usual one? The main parts (tire, spokes, hub and rim) are available in any of these varieties of our iron friend, so the general scheme of the rear wheel of a high-speed bike is no different from the rest. But each specific node may already have some differences depending on the selected type.
There are many options for all these details, and it is impossible to talk about each of them in one article. Therefore, when purchasing certain spare parts for the rear wheel of a bicycle, be guided by its model and characteristics.
How to Assemble the Rear Bicycle Hub?
After lubrication, the sleeve must be reassembled. To properly assemble the rear hub, you must adhere to the following rules:
- We insert the axis so as not to confuse which side is the right side of the axis, which is fixed tightly. The axis is adjusted with the left cone.
- Next, put the left cone on the axle until it stops.
- We put on the washers.
- We screw on the lock nut.
- Adjusting the bearings.
How to apply lubricant
The goal is to lubricate balls, cones and cups. This can be done as quickly and efficiently as possible using the following technology:
- Lubricate the cup with your finger.
- Put the balls into the cup using medical tweezers, observing the intended purpose of the groups sorted during disassembly.
- Apply a thin layer of lubricant over the balls.
- Repeat steps 1-3 for the second side.
- Put the boot on the locked cone located on the side of the cassette (relevant only for the rear bushings).
- Apply a thin layer of grease to the beveled surface of both cone nuts.
There should not be a lot of lubricant at the contact points. This statement is relevant only because excess grease is squeezed out through the anthers, and it intensively begins to collect dust. You can estimate the sufficient filling level from the photo. There are usually no problems with the installation of balls. They adhere well to the lubricant, which is already in the cup according to paragraph 1 of the technological instructions.
It is customary to lightly coat the thread on the axle and the ends of the nuts with a compound that was used to treat rubbing surfaces. This activity is designed to minimize oxidation of metals and the formation of rust at the interface of detachable parts.
DIY bike rear hub repair
One of the most practical and healthy means of transport is the bicycle. However, its maintenance can cost you a pretty penny if you do not know how to repair at least minor breakdowns.
In such cases, it is simply necessary to have such skills as attention to detail and accuracy, since they will help you to repair or disassemble any part, for example, the rear hub of a bicycle wheel.
Bicycle rear hub and its device
One of the most important parts of a bicycle is its wheel. In particular, the rear wheel is much more loaded than the front wheel, since it is on it that the ratchet (freewheel mechanism) and the cassette (sprocket block) are installed. The wheel is the main focus when driving, so it is important to understand the design of its hub in order to be able to properly maintain it.
A hub is an element of a wheel that is attached to a bicycle frame, namely drop points. This is the central part of the wheel that allows it to rotate freely.
The bushing consists of elements such as:
How to sort out the rear hub of a speed bike
The word bulkhead in full is relevant only for tapered products. The maximum that can be done in a support on a slip is to clean and lubricate the bearings, and without removing them.
The repair principle for the front and rear cone nut bearings is the same, although the design differences are obvious. A set of sprockets is installed at the back; another design of the anther on the side of the cassette. However, the backbone is completely identical: that in the back, in the front, on both sides, one cone-nut and one row of balls, laid in bulk.
So, the subject of discussion is mountain bike rear cone service. It can be ratcheted, like on entry-class bikes like the Stels or Forward, or cassette like on mid to high-end bikes. By the way, in the material on how to choose a mountain bike. we have figured out in detail the differences between these two designs. There is also a recommendation on which design should be preferred.
Removing the rear wheel from a tri bike
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, 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 wearing out under dynamic loads.
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.
Disassembling the rear wheel of a speed bike
Replacing the camera
First of all, you need to lower the wheel. unscrew the cap and release the air by pressing the nipple. If the chamber is damaged and there is no air in it, simply remove the cap. To remove the tire, you will need mounting paddles, with which it will be convenient to pry on the tube until it becomes easy to pull it off the rim.
The camera can be replaced without the need for tools. First, the nipple is inserted into the hole in the rim, after which the tire is evenly put on the rim. Finally, the camera needs to be pumped up to the desired state.