How to unscrew the bottom bracket on a bicycle without a key

Option number 3. Unscrew the Torx screw

These are screws with a six-pointed star recess on the head. Such screws, by the way, are protected. with a rod in the center of the star. In any case, proceed with caution, because the edges of such a slot can easily be damaged.

Slotted screw Torx

Try using a flathead screwdriver. Insert its sting into a pair of opposite beams, gently scroll counterclockwise. And if the screw is protected, then insert the screwdriver between the rod and any of the beams, and scroll in the opposite direction.

A small flat screwdriver is used

To unscrew a protected Torx screw, try using a screwdriver for an unprotected one, but in this case, the rod on the head will have to be removed (this can be done, for example, with a center punch and a hammer).

Removing the center rod on the head of the protected Torx screw

Another possible option is to drill a hole on the tip of a conventional screwdriver for the star rod.

Drill a hole in a screwdriver for a regular Torx screw

Finally, you can use the same toothbrush by melting one end of it with a lighter (proceed in the same way as described in one of the previous methods).

Using the same toothbrush

How to unscrew a torx without a key

I decided on my bike to replace the front brake rotor with a larger one in order to increase the braking efficiency. Changed from 160 to 203, so that the effect was immediately on the face.
I started to unscrew the front rotor and ran into a problem, with 2 bolts of 6 soured. And as a result, the edge, the most reliable one made of Torx, licked off without much effort, although the key was in size. In short, for the first time in general, I ran into this, I shot and put it many times.
I read on the Internet about ways to solve the problem.
Found a few:
1. Hammer in a large Torx bit. I tried it. Also licked and now the hole has become even larger.
2. Make a slot in the head of the bolt for a flat head screwdriver. Did it, began to unscrew it, also to no avail. The screwdriver pops out of the socket. But if the screwdriver was wider, it would most likely unscrew.
3. Grind off the edges of the bolt head with an open-end file. This method helped me out, everything worked out quickly and without much effort. Stopped off on a turnkey basis for seven and the bolts moved from their place.
4. Well, the most haemoric and extreme method is drilling. But I didn’t get to that. Which I am very happy about.

The use of screws for fastening any products is convenient and reliable. But it often happens that you urgently need to unscrew the screw, but there is no suitable screwdriver at hand. Of course, using a screwdriver is the easiest and safest method, but if necessary, you can do without it. How to unscrew a screw without a screwdriver? Today you will find out about it!

How to unscrew a screw without a screwdriver

Option number 2. Flat slot

As noted earlier, there is only one indentation on the head of such a screw. In the absence of a flat screwdriver, the product can be unscrewed using improvised means. Let’s see how this can be done.

How to remove a mountain bike crank without crank puller tool, x-type Race Face self-extracting

Flat head screws

Use a credit card. insert it into the groove and try to twist. Use only an unnecessary card, because it may well be damaged during unscrewing.

The screw is removed by a credit card

You can also take the “eyelet” from a can (soda, beer). Insert the broken “eyelet” into the groove on the head of the hardware, scroll.

Trick for Removing a Bottom Bracket on a Bicycle

Using the “ear” from a tin can

Use a regular coin. insert it into the groove and still try to twist.

The flat-head screw is removed with a coin

If the screw is not tight enough, you can try to unscrew it with your fingernail. The method is not always effective due to obvious reasons.

Try to unscrew the screw with a knife, inserting the blade of the latter into the groove. In this case, there will be a risk that you will bend the knife.

The knife blade is inserted into the recess and scrolled counterclockwise

The last way is to use pliers. Suitable if the screw is not fully tightened. It is advisable to use sharp-nosed pliers for this, and not ordinary.

The flat head screw can be opened with pliers


Method number 2. Sawing

Peter Tiger

Method number 1. Twisting

Carefully inspect the screwdriver with which you unscrew the screw, and, if necessary, change to a more suitable one. It is important that the tip fits snugly into the groove and is not damaged. If replacing the screwdriver does not help, you can use other methods. If you need, for example, to unscrew a screw from a wooden product, then hit the head, and then tap on the tool with each application of force. You can also use pliers if possible, as we mentioned above. Or you can use it to seal the rubber band.

unscrew, bottom, bracket, bicycle

How to unscrew a screw with torn edges

On a note! To make the screw start scrolling, use a few drops of lubricating or brake fluid, kerosene. You can also heat the screw so that it expands. this is how the material surrounding it deforms, and the product can be unscrewed.

If all else fails, drastic measures can be taken.

How to unscrew the hex bolt?

This problem most often arises before motorists who decide to repair the car on their own. The car hex is located in the drain plug located in the gearbox, and sometimes in the sump plug of the engine crankcase.

Drawing of a bolt with an internal hexagon.

In everyday life, people are faced with hexagons when repairing water mixers or a ball valve, since ordinary fasteners in these places cannot be placed due to their size.

The size of the hex in these cases is quite impressive, so the hex head of a bolt inserted into a hex slot, unscrewed with a gas wrench, will help. Well wedged 3-4 nuts are screwed onto its thread, which are then unscrewed with a spanner.

A special device has been created for working with a hexagon. With the help of it, when unscrewing, a nut close to the head rotates. But tightening is carried out using the far nut. If the hexagon has a non-standard size, then the head of the bolt is sharpened with a file.

Methods for unscrewing a bolt with an internal hexagon.

If an attempt to unscrew the hexagon screw by various improvised means led to the breakdown of the edges, then you can find a way out.

A TORX sprocket is hammered into a small hexagon, with which the screw is unscrewed. If the head is available, the screw can be easily unscrewed with pliers, a gas wrench or a hand vise.

Sometimes a hammer and a mild chisel help, on which blows are applied tangentially towards the upcoming unscrewing.

For steel hexagons, a nut or a piece of some reinforcement is welded to their head, for which the bolt can be turned out.

How to unscrew a torx without a key

At the present time, the fastener details are quite diverse. These can be bolts, nuts with six faces, various screws, Torx sprockets. Hexagonal elements of various parts are considered separately, which are difficult to turn away without a suitable tool. Many do not know how to unscrew the hexagon without a key.

The internal hex is a fastening tool.

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For the first time a patent for an internal hexagon was obtained back in 1936 abroad.

Currently, a hex wrench for unscrewing any part is widespread and can be selected in any car market.

But for the sake of one use, you shouldn’t buy it.

Tools and materials for unscrewing the hexagon

You can unscrew the hexagon without a key. Sometimes you have to twist with the means that are currently available.

A hexagon with torn off edges can be unscrewed with an adjustable gas wrench with a compression of the part.

  • The hexagon, which turned out to be torn off the edges, can be unscrewed with an adjustable gas wrench with crimping the part.
  • Often its head is cut off with a grinder or removed with a chisel. Next, the central part is drilled with a small diameter, and the resulting thread is driven using a tap.
  • A small hexagon is struck with a hammer or chisel in the direction of the forthcoming unscrewing.
  • With a small diameter of the bolt being machined, a cut is applied to its head with a grinder, with which an attempt can be made to unscrew it with a screwdriver.

But the above methods are not the only help in unscrewing the hexagon.

There are many other methods of unscrewing with the help of an improvised and special tool.

The help will be provided by drills with a left rotation and a small diameter, a drill with a low rotation speed.
The purchase of a special tool for loosening depends on the frequency of its use.

  • The stud driver allows you to unscrew the bolt pin when the head is completely torn off. But its use is considered advisable only in the case of several revolutions carried out before the head break.
  • The electric wrench unscrews shock, but is applied before the break of this spare part.

Countersunk hex bolts are common. This is where the Torx sprocket helps. It is hammered into the saddle of the licked head and the unscrewing operation is successful.

Step-by-step instructions for unscrewing the hexagon

There are several options for step-by-step instructions for unscrewing the hexagon.

A hex bolt or screw can be damaged at any time. Various tools at hand can help in its repair, but the use of special tools may be required, without which unscrewing the hex head of the damaged element is impossible.

Therefore, it is important to know all the currently valid methods for the repair of this element. The hexagon is found in various types of indoor water mixers, in car spare parts. At the moment, these bolts are considered quite convenient fasteners, therefore they are widespread and found in many mechanisms.

Their use is advisable where a reliable power connection is required. This type of fastener is perfectly adapted to high loads and significant physical pressure. These bolts are especially often used in industries such as construction and mechanical engineering.

If we turn to the process of creating a hexagon, it becomes clear that the process of their manufacture is long and rather laborious. Such bolts are made from steel wire rod, which then softens after a long stay in a red-hot oven. Then the wire rod is placed for a while in a sulfuric acid solution to completely remove rust particles. After washing with water and processing with phosphates, the steel becomes resistant to rust, and then sent to the formation of the hexagon head element.

In the process of creating these products, many people are involved, providing the Russian market with modern high-quality fasteners.

key E, in size. it looks like E8 or E10 heads are rare but loose

manufacturers are fools looking for extra work

unscrewed with a regular head, then changed to a regular bolt

I would have watched how you turn off with your ordinary head Torx sour or tightened with a great moment.
On the contrary, it is quite possible: on an ordinary bolt with lapped edges, Torx is hammered with a hammer and the bolt is turned away.

If something-oysters of this variety have eaten more than one ton.

I decided on my bike to replace the front brake rotor with a larger one in order to increase the braking efficiency. Changed from 160 to 203, so that the effect was immediately on the face.
I started to unscrew the front rotor and ran into a problem, with 2 bolts of 6 soured. And as a result, the edge, the most reliable one made of Torx, licked off without much effort, although the key was in size. In short, for the first time in general, I ran into this, I shot and put it many times.
I read on the Internet about ways to solve the problem.
Found a few:
1. Hammer in a large Torx bit. I tried it. Also licked and now the hole has become even larger.
2. Make a slot in the head of the bolt for a flat head screwdriver. Did it, began to unscrew it, also to no avail. The screwdriver pops out of the socket. But if the screwdriver was wider, it would most likely unscrew.
3. Grind off the edges of the bolt head with an open-end file. This method helped me out, everything worked out quickly and without much effort. Stopped off on a turnkey basis for seven and the bolts moved from their place.
4. Well, the most haemoric and extreme method is drilling. But I didn’t get to that. Which I am very happy about.

A little about standards

On bicycles of different classes, it is logical to install bicycle cranks and carriages of different standards. At the moment, the following types of carriage assembly are popular:

  • Standard square mount. the old look for budget bikes.
  • Octalink, invented by Shimano. It has several subspecies, including standards from other manufacturers that are very similar in design. In fact, it is a kind of “square” carriages, but has a redesigned shaft and modified splines.
  • Hallowtech II is considered the best option in terms of stiffness / weight ratio, but it costs more than others. Also invented by Shimano.

On older bicycles, wedges were a common type of fastening. There were quite a few problems with such a system, which is why it remained in the last century. Now they are practically not produced, and even the most budgetary bicycles are equipped with carriages with a square shaft.

Carriage Removal Process for a Newbie

Undoubtedly, it is always difficult for a beginner in this or that business. But if there is a certain desire to do something with your own hands, then you need to learn and do. We present you with a description of how to remove the carriage from a bicycle with your own hands.

Doing so-called maintenance of your own vehicle is better than trusting it to a stranger. After all, you will clearly know what works great in your device and what needs to be eliminated. If you have the necessary tools for various work with the bike, then you can carry out a number of actions yourself.

In order to remove the carriage from the bike, as well as remove the pedals from the bike carriage, you need to prepare in advance a number of tools that will be at your fingertips. These tools include:

  • a wrench for nuts or an adjustable character;
  • for connecting rods, a special squeeze is required;
  • flat-type screwdriver;
  • hammer, but small;
  • a tool that allows you to remove the carriage itself.

On a device such as a bicycle, the carriage is a bearing assembly. The main essence of such a mechanism is to connect the connecting rod to the frame. In addition, a product such as a carriage provides so-called torque to the connecting rods. Based on this, it can be understood that such a detail is very important on a bicycle, its condition affects a lot.

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The design of modern bicycles implies a special glass for such a material as a carriage. This glass can be found in a specific area of ​​the rear pipe. As a rule, manufacturers install a carriage cup in the area of ​​the rear stays. Due to the fact that the device is installed in such a vulnerable area of ​​the bicycle, its durability is poor. From this it turns out that there is a need to check the device and repair it from time to time.

It is negatively affected by dirt, dust and rain. For this reason, backlash is formed. If you do not clean it in time and prevent damage to this product, then this threatens with a lot of negative nuances. During movement, you may encounter a decrease in potential speed or jamming of the device.

Therefore, advice on how to remove the carriage from the bike is quite relevant.

What are the pullers

A bicycle crank wrench is a special tool (usually a press) that makes it much easier to remove the system, unlike a hammer.

Each of the above standard has its own puller. In the case of a square shaft and Octalink, this is a kind of press that is screwed into the connecting rod head itself, rests on a special platform against the carriage shaft and, by screwing in a nut, breaks the connecting rod. There are cases of breakage of the thread of the connecting rods themselves, if the system was pressed very hard.

The left end cap with Hollowtech II requires a special sprocket wrench. The clamping bolt is tightened with a force of only 1-2 N / m, so a key of this standard is usually plastic, inconvenient, and the cover can be easily unscrewed by hand.

A special tool is good, and every bike lover should get it. But still, let’s move on to the main question. how to remove the bicycle cranks without a puller?

Repair without tools is possible

Ordinary users are unlikely to have a connecting rod puller somewhere, especially for the Octalink, although it costs a penny. But sooner or later the moment will come when either the system or the carriage will become unusable and require urgent replacement. If you have the necessary tools, the replacement of these parts is carried out in 10-15 minutes.

The easiest way to remove cranks from a bike without a puller, as mentioned above, is with a hammer. It is relevant for both Octalink and a regular square. The subsequent actions look like this:

  • Remove the plugs from the connecting rods, if present.
  • Using a 13 mm wrench, remove the carriage bolts. Many carriages today have 6mm hex bolts.
  • If you don’t want to visually damage your bike cranks, wrap them in several layers of thick fabric, cardboard, tape, or take a pine block a few centimeters thick. Ideally, a mallet is suitable for such an unusual task.
  • Flip the bike over against the handlebars and saddle.
  • Begin tapping the connecting rod with moderate force from the inside, as close to the axle as possible. You can hit the connecting rod from time to time from the outside in order to somehow stir it up.
  • If the structure is pressed very tightly, you can try to hit pointwise with a chisel or a barb attached to the connecting rod head.

Please note: Using this method, you can damage the frame, the bottom bracket assembly, or the connecting rod itself. In addition, any impact on the stars is likely to deform them and render them unusable.

It is worth saying that removing stuck connecting rods can be problematic, even with a puller. Most likely, in this way you will not be able to remove the stuck bicycle crank, no matter how hard you try. But do not despair, for such cases they came up with other ways.

Carriage difference

How to remove the bottom bracket on a speed bike is a separate topic. This is justified by the fact that on such a vehicle, this device has a slightly different form.

On other bicycles where the bottom bracket is of the standard type, it should be externally checked. If it is disassembled, then that is good. But before starting this procedure, you should pay attention to the condition of its bearings. In order to clean the carriage itself and especially its threads, it is necessary to use gasoline. It is important to remember that such devices need regular cleaning, this is necessary for your safe driving.

Preventing corrosion

Those who have dealt with stuck spare parts probably would not want to repeat this again. To prevent such unpleasant situations, you just need to process the attachment point before installation.

When replacing connecting rods, apply some grease to the bottom bracket shaft where it contacts other parts, regardless of type. Do not add too much lubricant, since at the time of pressing, its excess will be squeezed out of the connection and will remain to collect dirt outside it. Before installation, it is also worth lubricating the threads and even some latches.

Characteristic qualities of this type of repair

Every bicycle owner should know how to remove the carriage from a bicycle. It is worth noting that if the manufacturers of your bike have installed such a closed-type mechanism in it, then there is no point in repairing it. Such devices, as a rule, are disposable and the best way out of this situation is to replace the old unit with a new one.

In the same case, if your mechanism is open type, then everything is somewhat different. It can be easily removed, repaired and reinstalled. Bicycle repair experts say the bottom bracket is a fairly simple mechanism that can be easily repaired.

When carrying out repairs, it is necessary to do a number of actions:

  • It is necessary to lubricate all parts that are present in the mechanism.
  • Backlash must be eliminated.
  • If there are any sounds when driving, then they should be eliminated.

Methods for removing the lock from the wheels without a key: how to unscrew

Many car enthusiasts put on their cars expensive alloy or forged rims with designer grille filling and chrome plating. Such products are often popular among criminals who strive to dismantle wheels from a car left unattended. Vehicle owners, trying to secure the wheels, use locks that can only be unscrewed with a special key with a unique code. Often this key is lost by the owners as it is unnecessary for frequent use, and in such a situation people find themselves in a dead end. They just don’t know how to remove a wheel lock without a key.

How to remove a secret without a key: basic methods

There are situations when motorists lose the keys to their locks, especially when installing all-season tires, when they may not touch the wheels for years and simply forget where they put the tool. In such cases, you should not despair, experienced craftsmen know several ways how to unscrew the lock on the wheel if the car owner has lost the head.

The most effective way is with the help of a constriction, but it only works if the key is lost and only one lock is installed on the wheel. The master completely tightens all the other nuts on this wheel to the maximum, as a result, the pressure on the lock is significantly weakened, after which he gently knocks on it from all sides. Next, the car is lifted on a jack, all the bolts are removed, and the wheel remains on the hub exclusively with the help of a lock. The disc is gently loosened, and the secret begins to dangle, after which it can very simply be unscrewed by hand.

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What to do for those owners who have lost the secret? Another tricky way to remove the nut is with a socket head. It is necessary to take a nozzle from the set, which will be half a diameter smaller than the outer part of the lock. Next, force the socket head onto the surface of the nut, and if it is made of mild steel, then, most likely, its surface will take the form of the inner part of the nozzle with edges.

After that, you need to take a torque wrench and, constantly monitoring the pressure on the knob, loosen the nut. The key is removed from the attachment, and the whole structure is already easy to unscrew by hand.

How to unscrew the lock correctly and without damaging the wheel? The most common way to retrieve the secret is to contact the manufacturer’s service center, where, within a few days, engineers will be able to restore the key and make a duplicate. However, in the package with nuts, along with the key, there is a combination of numbers. a unique code by which the product is restored, and if it is also lost, then this procedure is impossible.

Masters at auto service stations often resort to conical extractors, with the help of which they dismantle the stuck bolts. a hole is drilled in the head of the fastener, a pin with a cone and notches is inserted into it, after which the master carefully unscrews the element that is dead fixed on the extractor.

One of the most exotic ways of extracting secrets is to freeze steel with liquid nitrogen, when it loses its strength and, after prolonged exposure to ultra-low temperatures, is simply smashed into pieces with a hammer.

Types of wheel locks

Secret. a nut on a car wheel disk, made of high-strength steel and having a special pattern for installing a key of a special design on it, made on the basis of a computer model in accordance with a digital code that is selected by the method of random variations. For the secrets of one brand, there can be several thousand key options, which are almost impossible to pick up.

Locks are sold in a set of 4 nuts and one key-attachment for manipulating them and are divided into the following categories:

  • The most popular type is figured products, when the surface of their end is intended for a unique key, and any other tool does not tighten the secret nut without destroying it.
  • A more progressive product is considered a lock with an eccentric or a movable ring, when they consist of two parts. an external, tightened one, and an internal one, which is centered relative to the axis of the stud on the hub. Even if the thief is able to loosen the thread, he will not be able to cope with the eccentric without a unique key, because the lock head will freely rotate around the main element.
  • The most modern development in the field of wheel safety is the lock with special holes. Holes with a random set of diameters and depths are laser-engraved on the surface of the products, and the key has the same projections that correspond to the grooves on the nut. The complexity of the drawing will not allow you to make a high-quality impression for a duplicate or use a master key to steal a wheel.

Common mistakes of owners when dismantling the lock

Removing a wheel with a lock without using a key is a procedure that is not repeated too often in life, and an ordinary car enthusiast rarely manages to complete it without a single mistake. When using one of the above means to remove nuts from the wheel, you can often damage the wheel, or even the hub, the brake system and, as a result, pay very big money for repairing the entire structure.

First of all, if you act with a banner, car owners may have some problems, in particular:

  • Tightening regular nuts too tight can cause the threads on the studs or on the fasteners to break.
  • Wheel loosening on a vehicle can deform the studs, rim, or hub, leading to costly repairs.
  • After all the manipulations, the desired result may not be achieved, because the nut will not loosen.
  • If 2 locks are installed on the wheel at once, then this procedure for their removal is impracticable.
  • Removing the lock with this procedure is not 100% guaranteed.

Removing the lock after freezing

When a master works with a socket head, you need to remember that the tool will most likely be damaged, and if it fits on the lock, then after unscrewing it, it will be almost impossible to remove the tightly fitting fasteners from the socket head without damaging the head.

When working with a conical extractor, you should be aware that the hole in the element head must be centered, otherwise it will be extremely problematic to remove the element. At the same time, it is also difficult to drill another hole next to the existing one, and, most likely, some other method will have to be used to dismantle the lock.

If the owner bought a can of liquid nitrogen and is going to apply it to the lock, this should be done with extreme caution, since there are the same steel elements with a similar chemical composition around the nut. This means that applying the substance not to the very tip of the nut head, but spraying it on neighboring parts can also lead to fragility, and sometimes even to the destruction of the disc itself, the hub or other elements. In addition, other wheel bolts may break. And what should the owner do if he tore off the lock, how can the wheel be turned off after that? We’ll have to go to the service station.

Installing locks on expensive rims is a classic procedure, as a result of which none of the disks will be removed by intruders, because when monitoring a crime scene, they usually bypass such cars by the side, because the wasted time dismantling secret nuts can be useless not lead, and the risk of getting caught is too great. In such cases, the car owner is more at risk of a radio tape recorder forgotten in the cabin than a wheel.

However, it must be remembered that the key to the nuts should be stored exactly where it is easy for the owner to find it, in order to subsequently avoid serious difficulties with the use of artisanal methods for removing the locks. If, nevertheless, this happened, then the car owner needs to abandon the operation of the car for a few days and still contact an authorized remote customer service center from the manufacturer of security systems, present the code, and then pick up the restored tool, and only in this case he 100% guarantee of safety of all parts of his “iron horse” is provided.