Bicycle pedal device
The design of bicycle pedals is very similar in principle to the front wheel hub. Unless, instead of spokes, a platform is fixed on it under the cyclist’s leg, and on its axis there is a thread with which it is attached to the connecting rods. Therefore, below we will consider what a bicycle pedal usually consists of. But before that, it should be clarified that today on the bicycle parts market, pedals are divided into three (this is not counting the division for different bicycles) main groups: classic, platforms and contact.
Bicycle pedal repair
In this section we will talk about what malfunctions can be and how to fix them.
2) Lubricant missing (or too dirty)
2) Apply new grease
2) Failed cone or cup.
3) The industrial bearing is out of order (if this type of bearings is used)
2) Replace the defective part if possible.
3) Replace with a new one.
In any case, if you perform maintenance on time (at least once a season), the pedals will serve you faithfully for many years.
How to lubricate pedals
Lubrication of the pedal bearings after disassembling it is completely similar to the same operation when disassembling and lubricating the wheel hub of a bicycle (if you do not know how to disassemble the bicycle hub, check out the link). To do this, you can use such types of greases as Litol-24, TsIFTIM-201,158 and other lubricants for bearings. If you ride in winter, it is better to use Litol-24, which does NOT lose its properties at low temperatures.
We lubricate the pedals without completely disassembling them
If you find that the pedals have become difficult to rotate, and there is a possibility to disassemble them at the moment, then lubrication without complete disassembly may be a temporary solution. For this, you can use almost any liquid oil. In my case, I used liquid oil for sewing machines I-20. But let’s clarify right away that this is only a temporary solution; in the future, a complete lubricant change should be performed.
And so, let’s get started:
- We put the bike on its side so that the pedal, which will need to be lubricated, “looks” with its end straight up.
- Remove the plug at the end with a screwdriver (or second handy tools).
- Slowly pour liquid sewing machine oil (about 2 ml.) Into the pedal (you can rotate it slowly).
- Install the plug and, NOT lifting the bike, quickly rotate the pedal for 10 seconds.
- We put the bike on the wheels and pedal several times. It should spin easily and for a long time.
This completes the lubrication process of the bicycle pedal without complete disassembly. Over time, liquid oil will still leak out of its cavities, and the problem will return. Therefore, as free time appears, you should still disassemble and replace the grease in the bearings.
Bicycle pedal bushings: disassembly, lubrication and repair
What if the pedals on the bike become stuck together, have difficulty spinning, or don’t spin at all? This is not such a terrible breakdown as it might seem at first glance. While some may look slightly different, most are almost identical. The differences mainly lie in the different form factor of the platforms, which can not only be different in size, but have special hooks for specialized cycling shoes. But the pedal hub of the bicycle on almost all models has the same design. Therefore, in this material, using an example, we will consider the questions of how to remove the pedals from the bike, disassemble, lubricate and repair them if necessary. We’ll also take a look at the pedals and talk about which pedals are best for different bikes.
Clipless pedals are mainly used on mountain bikes or road bikes. Although some bike travelers set them on hybrid fables too. The main difference from the previous ones is the toe, which engages with the mechanism on the outsole. Specialized cycling shoes. This design allows not only pushing the pedal downward, but also upward pulling, which increases the pedaling efficiency and reduces the effort expended when pedaling.
But the complication of the design leads to an increase in the price of this type of pedal, plus everything requires additional financial costs for the purchase of a special bicycle shoe.
We examined the main varieties, and we will talk about other types and how to choose pedals for a bicycle in one of the following articles.
How to remove and disassemble bicycle pedals
Removing the pedals from the bike, for example, for replacement or repair (maintenance) is not a difficult task if you know how to do it correctly. The main trick here is that the left and right pedals are unscrewed differently.
The right one is unscrewed classically. counterclockwise, and the left, on the contrary. clockwise (has a left-hand thread). This is done so that the pedals do NOT spontaneously unscrew from the connecting rods while driving.
Bicycle pedals can be removed using an adjustable spanner, a 15 spanner, the so-called parrot’s key, or a specialized one for dismantling the bicycle pedals. It should be noted that the gap between the pedals and the crank is 12 mm, so you must choose a tool that will fit between these parts. Humidity of complete disassembly, we also need a set of socket wrenches.
After we have unscrewed the pedal from the connecting rod, we can begin to disassemble it. To do this, follow these steps:
- Remove the plug at the end of the pedal. To do this, pry it with a screwdriver or other thin, sharp object.
- Using a socket wrench, unscrew the locking locknut and remove the washer.
The form factor of this type of pedal is a monolithic wide platform made of aluminum or magnesium by casting or milling (although some of them are made of high-strength plastic). In fact, the body of the part is one whole product, inside which there are also threaded, bearings, washer and locknut. They can additionally have reflectors and hook pins screwed into the body. The latter prevent the sole from slipping on the bicycle pedal.
The advantages of this type of pedal include increased durability, so they are often used on BMX bikes. Although they can also be installed on mountain, road and city bikes. Not recommended for road racing due to heavy weight.
Cons: slightly more expensive and heavier than classic pedals.
How to lubricate pedals on a bicycle
After the performed manipulations, all parts must be thoroughly wiped with a clean cloth. To facilitate the task, you can put all the pedal assemblies in kerosene, then wipe them. This will allow you to clean up as much as possible of old grease, sand and other things. Be sure to check the condition of the balls so that they are all the same shape and size.
Then grease all parts with heavy grease, it is recommended to grease the waterproof grease and then reassemble the pedal in the reverse order. Do not forget to wipe the axle thread cleanly before installing the pedal and lubricate it with grease, which will allow you to smoothly put the pedal in place. And next time the pedals will unscrew easily.
How to remove pedals from a bicycle, their repair and maintenance
How to unscrew the pedals on a bike
Bicycle pedals are the part of the crankset that propels the bike. Therefore, this unit is subject to heavy load and requires special attention.
Bicycle pedals are a fairly simple mechanism, but at the same time they consist of:
- Here are the bicycle pedals. it is a metal pin, which has a thread at the end, with which it is screwed into the connecting rod;
- Pedal platform. the surface that contacts the foot;
- Bicycle pedal bearings. provide torque along the pedal axis;
- Bolts, nuts, plugs
- Read about why the pedals on the bike spin and what to do to avoid it in this article.
- Contact bike pedals, folding pedals and other pedals can be found here.
Operation of the pedals in various weather conditions can lead to their failure, pedal axis backlash, crackling, crunching, knocking directly on the bicycle pedals may occur. All these problems are not difficult to fix. Therefore, if you notice that your pedals squeak on your bike, then in order to make the pedal more flexible, you will need to Unscrew and remove it from the bike.
Today we will look at how to disassemble a regular pedal and clipless pedals.
How to disassemble pedals on a bicycle
First, let’s look at the simplest pedal problems (crackling, crunching) that can arise:
Pedal repair. We tighten the lock nut
- It is necessary to check if there is any damage to the pedal (cracks, chips, etc.)
- Check the attachment point of the pedal axle to the connecting rods, over time it may weaken or moisture and sand may get into the connection. For prevention, you can Unscrew, carefully wipe the thread of the axle and the connecting rod itself, lubricate with thick grease and tighten it again;
- We check the pedal for backlash. To do this, hold down the pedals and try to move the platform in different directions with our hands. If there is play, then this is corrected. Tightening the locknut, which is located under the plug (see Figure)
- If the pedal is spinning tightly or there is play, it is advisable to completely go over the bicycle pedal. It won’t take you a lot of time. Let’s get started:
Only an adjustable wrench is required to remove the pedals from the bicycle crank.
Here the pedal usually has several edges, which allows you to unscrew it without much effort.
Everything, the pedal is completely disassembled.
How to disassemble a bicycle pedal if you have clipless pedals
- Also learn about correct pedaling technique, which may help to avoid many pedaling problems.
Clip-on pedals are more complex and rotate tighter. For example, let’s look at the maintenance of the most common and cheapest contacts. Shimano PD-M520. If you have any problems with the pedals, then it is better not to disassemble them again, so as not to amass unnecessary problems. They do NOT require frequent maintenance.
They can be removed from the connecting rods in the same way as conventional pedals. using a key. To remove the axle, you will need a special tool. a Shimano TL-PD40 crank puller, keys for 7, 10 and 15. For the older Shimano PD-M540 model, such a puller is NOT required.
Let’s get started:
To unscrew the bicycle pedal, you need a special puller
- We put the connecting rod puller on the pedal in the place indicated by the arrow and unscrew it. After that, we easily take it out from the pedal body.
- Holding here with a key or clamped in a vice, unscrew the lock nut that holds the entire axial structure. Then we take out all the nodes in order, but be careful, as there are balls inside. There should be 12 of them on each side.
The pedal is completely disassembled. Do everything here the same way, carefully wipe the old grease from all pedal assemblies and grease the waterproof grease. Putting it up in the reverse order. The balls must be laid out one at a time on their seat, having previously lubricated with a thick layer of grease. It is important to tighten the nuts well at the same time so that the pedal rotates smoothly and without backlash. After the performed manipulations, remove all excess grease that may be released after tightening the pedal.
The Shimano PD-M520 pedal diagram is shown below for an overview of the component parts.
General diagram of the bicycle pedal disassembly
- If you want to know more about a bicycle bottom bracket, read here.
- Lots of useful information about bike tools.
- In addition, you may be interested in how to remove the carriage from the bike, how to disassemble and repair the carriage. About this at this link //velosipedinfo.ru/kak-snyat-karetku-s-velosiped.
See also how to install the pedals on your bike correctly
Scrolled on a racing bike
Cranking on a speed bike is often caused by a rear wheel defect found on many modern models. It can be more difficult to fix the working mechanism on a high-speed bike than on a simple bicycle, since the chains on the first are more whimsical than on the second, and require work with a large number of links.
Mountain bike pedaling
Mountain bike scrolling can also be caused by erasing complex hub parts or chain damage.
They are associated with driving over rough terrain at high speed. The risk of occurring deformations obliges the owners of such bikes to carefully inspect their vehicle every time after a bike ride.
Scrolling on a road bike
To find out why pedals spin on a road bike, you need to pay attention to the features of its structure. Road bikes and any foot-operated bicycles are particularly prone to bushing wear. Over time, its components cease to cling to each other, and the mechanism of operation goes wrong. The wheel rotates at idle, since the pedal scrolls the stars, not the wheels.
Eliminate scrolling on a bike
Troubleshooting can be broken down into several steps.
First you need to remove the rear wheel in order to be able to dismantle the transmission. The chain and the entire chain mechanism must be cleaned and lubricated. It is especially necessary to process the gaps between the rollers and the sprockets.
Then you need to replace the sprockets and the chain itself. You cannot limit yourself to one thing, because the mechanism works as an integral system: removing a minor malfunction does not mean that it has solved the problem.
The repair itself boils down, in fact, to finding and then replacing the damaged parts. When the wheel is removed, it is necessary to sort out the bushing along the spokes, inspect each separately, check whether the roller is worn out and whether the cone is intact.
Reasons for the appearance of scrolls
Most likely, the scrolling on the bike was the result of wear on one of the parts. It remains only to understand which one. The most vulnerable points of the pedal mechanism are:
- Rear sprocket;
- Rear wheel hub and parts.
What to do if suspicion falls on one of the listed elements? As a rule, these details “hint” in advance to us that it is time to take care of them. An attentive cyclist anticipates the problem and does not lead to complete breakdown. If the cranking nevertheless begins unexpectedly, a careful examination of not only the pedal, but also the entire driving mechanism will help to remove it. When examining a bike thoroughly, special attention should be paid to:
- Rear hub;
- Front wheel sprockets;
- Cassette or ratchet;
How to remove scrolls on a bike
Sooner or later, every cyclist is faced with such a problem as scrolling the bicycle pedals. In a similar way, a failure occurs in the work of the so-called connecting rod-pedal group, which is responsible for the normal movement of the VELOBIKE. To eliminate the malfunction, you need to determine which of the parts has become unusable.
Prevention of pedal scrolls
Keeping clean, as in the human world, is very helpful in maintaining cycling “health.” Why does scrolling occur even after replacing worn parts? Due to lack of maintenance of the bike and its parts.
In order to clean the bike cassette, it must be removed. Prepared in advance with a flat bristle brush, you need to go over all the links of the chain. Then. wipe all the cloves and washers with a napkin dipped in kerosene. (Never use gasoline, it can cause rust!)
And, of course, the main culprit of bicycle scrolls requires special attention. the chain. There are several mandatory procedures for caring for her:
1. Flushing. It is advisable to rinse the chain and clean the links from adhering dirt after each ride, especially in autumn and spring. You can stock up on kerosene, white spirit, or any other cleaning agent beforehand. Before applying the cleaner, the chain must be cleaned of dirt, rinse it carefully in a separate container.
2. Lubrication. A clean chain must be thoroughly lubricated. You can use for this both liquid or thick lubricants in the oiler, and aerosol products.
It is better to choose a more expensive and better quality lubricant. Ideal, for example, a thick composition “Litol 24”, which does NOT let water through and Bulky dirt spots.
With timely care of the chain and other parts of the driving bicycle mechanism, there is a chance that the pedals will begin to spin only after many years of use of each part.
Pedals on a bicycle are scrolled: reasons, repair methods
Over time, every cyclist is faced with the problem of scrolling the crank-pedal assembly. This is due to insufficient maintenance of the bike, improper storage or untimely replacement of system parts.
To avoid spinning on the bike, it is enough to monitor the condition of the bike and inspect the parts for debris, lack of oil, damage to the part. IN SEPARATE cases, scrolls DO NOT require replacement of parts, only thorough cleaning with a cloth with a special agent.
What to do to avoid pedaling?
To reduce the possibility of the appearance of scrolling of the crank-pedal assembly, several rules must be observed.
Usually this breakdown occurs due to poor bike care:
- Prompt attention to any changes in bike performance.
- Several times a season or after each major ride, you need to disassemble and inspect all parts of the bike to determine wear.
- If any parts are contaminated with dust, old oil or debris, they need to be cleaned.
- It is recommended to check parts for oil.
- If any corrosion, deformation or destruction is found, an urgent replacement of the part is required.
The service rules also include the peculiarities of bicycle storage. It is best to leave it indoors without constant and abrupt changes in climate, temperature, and to avoid increased moisture levels.
If the bike is stored unattended for a long time, you need to remove the chain (avoid stretching) and place it in a container with kerosene. You also need to weaken the brake system and remove, if possible, all electrical appliances.
The problem of pedaling a bicycle most often occurs due to carelessness or careless handling of the bicycle. In the event of a breakdown, it is necessary to disassemble the parts, which could serve as a prerequisite.
Incorrect speed change setting
The last reason is the wrong bike speed setting.
This is due to the fact that the shifting foot does NOT reach the required sprocket:
- To solve this problem, you first need to check the cable and clean it of dust and other debris, if any.
- After that, you need to re-configure the gearshift system on the bike.
- Having done all this, you need to conduct a test ride on a bike.
- If the connecting rod-pedal group no longer scrolls, then the problem was precisely this.
- If there are no changes, the rest of the bike components must be checked.
The pedals are spinning on the bike: the reason
- The chain on the bike is very stretched;
- Front sprockets are worn out;
- Elements of the rear cassette have become unusable.
There is also a combination of the above breakdowns.
How to fix the trouble? The root cause here may be cable stretching, the presence of dirt on the gaskets. The solution is to remove them from the jackets and flush the connections from rust using a special tool WD40. If the sections are broken or critically damaged, the cable ones will have to be replaced with new ones.
Should I lubricate the cables with oil? Experts do NOT recommend resorting to such actions. Changing gears may be much easier at first. However, over time, grease-coated cables will stick to dirt, making them difficult to move.
It is necessary to lay cables in shirts so that their bending angle remains minimal. This will avoid excessive friction.
After servicing or replacing with a cable, it remains to re-adjust the gear switches. Finally, you will need to ride the bike, checking if the pedals are cranking as before.
If there are problems with the transmission
Experienced experts believe that when cranking the pedals, first of all you need to Pay attention to the transmission. it must be cleaned and thoroughly lubricated with special agents. Particular attention must be paid to the sprockets and the inter-roller space of the chain. To remove the chain for processing, you will have to dismantle the wheel.
If, even after cleaning the transmission, the pedaling problem persists, then it is advisable to completely replace the entire set.
You can repair or replace the rear hub. this will be a cardinal solution to the problem in question. We act as follows:
- Remove the wheel from the bike;
- We carry out the spacing of the sleeve;
- We inspect the level of wear and tear, here are the cone rollers, bushing bearings.
Note: some “craftsmen” give the cone for processing on a lathe. This approach to solving the problem may delay the cranking of the pedals, but sooner or later, the rear hub set will have to be replaced in any case.
Often the center of the problem is old or worn tenacious.
If it has not been cleaned for a long time, then you need to clean it with a rag, kerosene and an old toothbrush to clean in inaccessible places.
After that, it is recommended to let the chain dry, and then lubricate with special oils (silicone-based). You can prevent this situation if you hear a creak in advance or the pedals will start to scroll harder. In this case, the chain is preventively wiped.
There is another situation when the chain is too stretched.
This is determined by external examination:
- If it hangs, then the reason is this. In this situation, it can be shortened.
- To do this, you need to find a specific link on which the latch will be.
- It fixes the ring connection. It must be removed.
- To shorten the chain, you need to remove several links with a hammer by knocking out bushings from them.
- After that, put the retainer back and put on the chain.
- If after all the above operations nothing has changed, you need to change the chain to a new one.
Pedals on a bicycle are scrolling: causes and solutions
If the pedals on the bike are spinning, this can happen for a variety of reasons. Most often, improper care of a two-wheeled vehicle leads to this. Trouble can be caused by prolonged failure to service the main functional systems of the bike. The wear of certain parts often leads to disastrous consequences. Let’s find out how to fix the problem of idle scrolling of the pedals on a bicycle, what factors contribute to the occurrence of such a breakdown.