How to “repair” a nipple in the field
And now for the fun part. repairing the camera inlet away from home. High pressure (especially for Presta) can simply knock out the stock to a hole, and through it the air will escape from the tire instantly. Plugs and chops will not help here. the air pressure in combination with the load on the wheel will quickly knock them out, just like the stock. With an automotive nipple, such problems are not observed, but the internal valve may suddenly fail. And the result is the same as the hole on Presta. descent.
So, you need to ride a bike for about 20 km, and the wheel is not functional. There is no spare camera with you, with it the problem would be quickly and painlessly eliminated, and the nipple can be easily replaced later at home.
Advanced cyclists, in addition to the camera, carry patches and spare nipples with them, and rightly so. God protects those who are careful. It is recommended to have it all with you on long trips, or at least one of these. And of course, a set of tools.
Consider a situation when there are patches in stock for sealing holes in the cells. They will be very useful to us. What can be done when the nipple cap is ripped off or the valve on the Schrader fails:
- Take the small rubber patch from the tire repair kit and cut it into small pieces. It is advisable to use a sharp knife, but you can use scissors or an ordinary flat screwdriver.
- Push the rubber bands into the protective cap around the circumference. Leave the thread free from below to screw onto the nipple body.
- Pump the chamber to excess pressure with a pump: do not be afraid, it will not burst, some of the air will come out when the hole is plugged.
- Quickly remove the pump and plug the hole with your thumb. You can’t hesitate, otherwise the air will quickly bleed to low pressure.
- Raise the cap, remove your finger from the hole and quickly put the cap on it. We do not hesitate, otherwise everything will have to be repeated again.
- Tighten the cap to the maximum. Straightened inside the spatula firmly seal the air outlet, thus keeping it inside the chamber.
- Gently insert the camera into the bicycle wheel rim.
Such a simple repair will allow you to get to your destination. However, it is better to keep the speed in the middle range so that the pressure inside the chamber does not increase and the air does not push the cap upward.
Failure of the nipple is not a reason to change the camera. Buying a new part will be cheaper, and removing with a punctured camera is completely free
After replacement, however, it is worth paying attention to how the nipple holds the air. With periodic descents, it is better to install a new camera.
How to pump presta valve using portable air pump ?
How to inflate a wheel?
Automotive nipple If this sample of technical thought is installed on your iron horse, then it will not be difficult to inflate a tire either in the garage or on the road (if required). The fact is that the valve on such a device is universal and you can use any pump that is at hand for it.
What are we doing. The auto nipple is equipped with a special cap that keeps the pressure in the tires. It must be unscrewed and put in a conspicuous place. Now we install the pump head and fix it with a clamp (the clamp is parallel to the nipple). Now we gently blow air into the tire. The wheel rim always indicates how much pressure is acceptable for a given bike. Try not to go beyond these symbols, watch the pressure gauge on the pump. Done! We release the clamp, remove the pump and twist the cap into place. Everything, you can go further.
Presta This spool is fitted on all sports bikes. It is slightly smaller in diameter than an auto-nipple, but its length is much longer. from 42 to 80 mm versus 40. The main feature of the Presta is that the valve stem is outside, not inside. And a special nut is also attached to the cap, which additionally retains air in the tires. You should be aware that to pump air you will need either a bicycle pump or an auto pump with a special hole. Standard entrance will no longer work.
How to inflate a wheel. We start, as always, by unscrewing the cap and putting it in the touch zone (so as not to lose it). Now you need to unscrew the lock nut. And here you need to make a reservation: there is no need to completely remove it from the rod. It is enough to simply release the rod. It’s easy to check. we press the valve with our finger and if air comes out of the wheel, then the job is done. Well, then the process is absolutely similar to the previous one, the car nipple: we install the pump, fix the clamp and, in portions, following the monometer, we supply air to the tire. Made by!
Dunlop Surprisingly, this type of valve looks very similar to an autonipple, but functionally. to a Presta. Dunlop is practically not found on modern bicycles, but if you are a happy owner of a retro bike, then you need to pump up the wheel following the instructions for the Presta nipple.
Try not to lose the cap when inflating your tires. This small piece protects the nipple from dirt and prevents the tires from going down.
What happens if you pump up a wheel and drive a punctured one
I have repeatedly heard a similar question, the answer is. nothing will happen, go for a drive to your health. But there are a couple of things to keep in mind: First, you don’t know the reason for the lowering of the wheel. No one can guarantee that a slow descent wheel will not descend quickly, somewhere in the steppe, and you are without a spare tire, and outside the coverage area of mobile communications. Or, even worse: there may be a defect on the inside of the tire. you can’t see it. It’s bad to joke with this: if the wheel is deflating regularly, look for the reason. Second: be sure that one day you will forget to pump up the wheel and go on empty. And then, while you realize. you can easily chew the tire, so think about it. it’s worth it?
What to do if you noticed late that the wheel is flat and drove on a flat tire. The first and only thing is to put the spare wheel on. The principle: “I’ve already spoiled the rubber, I’ll pump it up and finish it” is unacceptable. The fact is that serious tire deformations that occur when driving on a flat tire are primarily associated with the cord, and may not be noticeable outwardly. Cord are threads (synthetic and metal) that are inside the rubber and serve as a wheel frame. And if several threads have burst, there is no guarantee that when you hit a bump or fall into a hole, the wheel will not “shoot”. Do not joke with safety. the tire service will tell you whether the wheel is suitable or not.
And one last thing: if you please, a little advice. Quite often, with a side cut, some craftsmen suggest inserting a camera into a tubeless wheel. Agree to such a scam only in a desperate situation. The fact is that with a strong deformation of the tire on the road (bump / hole), the camera can crawl into the cut and burst. The consequences of an unexpected, and most importantly. instantaneous descent of the wheel, at speed, may turn out to be unpredictable. Depending on the traffic situation, even a professional may be powerless in such a situation. Don’t be intimidated, but the wheels are your safety on the road. don’t tempt fate. Also: Inserting a tube into a tubeless tire (anyway) will cause air to trap between the tube and the inside of the tire. This will lead to excessive heating of the wheel.
In theory, with proper sealing, any mid-range tire can be turned into a tubeless tire, and better with a Kevlar cord. Insulate the rim with several layers of reinforced tape or, at worst, tape. Bicycle nipple can be cut from unnecessary tube
It is important that it has a compression nut, as a rubber pad will need to be placed under it. If you don’t mind the rim, you can fill the nipple hole on the rim with high-quality construction sealant from both sides
After that, put on the tire, pour about 100-150 ml of bicycle liquid sealant into it and you can try to pump.
As practice shows, such self-made systems sooner or later still begin to leak air or the tire breaks off on hard tracks, so think carefully if you are ready to take such risks for the sake of saving.
This invention of the American August Schroeder (there are readings: Schrader or Schrader) was patented in 1893 in the United States. Therefore, this valve is otherwise called American, but more often it is called simply automobile. the vast majority of wheels of modern cars and motorcycles are equipped with such a device.
How To Inflate A Bicycle Tyre
It is also used in many refrigeration and climatic installations where refrigerant top-up is required and in other systems as a bleeding point for excessive air pressure or process fluids.
The design of the Schroeder nipple consists of a tube into which the working unit is screwed. the core, which is a poppet valve that closes the air outlet from the chamber under the influence of a spring. By adjusting the height of the protruding stem of the spool, it is possible to control the air pressure in the chamber. The spool is screwed in with a special tool, which is often used as a protective cap. a metal cover with a plastic seal inside. A new word in such a system. built-in pressure control sensors.
How to pump up a bike with a car pump?
Most modern bike models are equipped with a car or “Schrader” nipple, which allows you to directly inflate the camera at regular gas stations.
Algorithm for pumping simple wheels with a car nipple
- Release the nipple and insert the compressor hose
- When using a universal pump, the jumper must be installed with the large end outward in the “auto nipple” position.
- Close the front cover and connect the pump
- In the process, monitor the pressure you need
- How to inflate a bicycle wheel with a thin nipple Presta at a gas station
- First of all, it is necessary to install a special adapter at the output end of the tire.
- Connect the compressor
- When using a universal pump, the jumper must be put outward with the thin end
- Pump several times until the required pressure is reached.
Types of bicycle nipples
Bicycle tube markings
We have decided on the nipple, now we need to find out the size. All bicycle cameras must be exactly the same size as their wheel, but wheels can be completely different sizes. City and mountain bikes use 26 “wheels, kids and BMXs use 20” wheels. 29 inches can be found on road bikes and niners (bicycles with large wheels).
So which camera should you choose? Tire marking will answer us this question. For example, you see the following notation 26 x 2.10 (559 x 54), what does it mean? The first numbers indicate the size in inches and the numbers in parentheses indicate the size in millimeters. 26 (559) is the rim diameter and 2.10 (54) is the tire width.
Second method. Presta valve
French valve (Presta) or the Sclaverand name is commonly found on high-performance road bikes. Compared to the Schrader valve, this one is longer and narrower in diameter, and also have an external stem, which is covered with a cap, instead of being surrounded by a core.
Valve opening. To open the Presta valve, you need to unscrew the dust cap. Then you need to loosen the brass cap on the valve stem a little, it will not be able to come out completely, and you will have to lift it a little. If you want to check if the cap is loose, you just need to press the valve stem, and if you hear that the air comes out in sharp gusts, then this is a sign that you can stop.
Calculate the recommended tire pressure on your bike. This is, as a rule, a raised mark, which is located on the sidewall of the tire. Most often, these readings are written in bars or PSI. Do not let the pressure go to the bottom, as well as to the highest, which exceeds the maximum.
Inflate tires. Open the Presta valve by unscrewing the dust cap and loosening the smaller brass cap.
- Secure the pump to the valve. If the lever is near the nozzle, make sure it is in the open position (parallel to the nozzle) when you insert it into the valve; snap the lever down all the way (perpendicular to the nozzle) when it is inside the valve. Monitor PSI level when pumping.
- Turn the lever up to remove the pump and screw the brass cap back in until it stops.
- Replace dust cap.
To deflate a tire with a Presta valve, open the brass cap and push the spring-loaded valve stem until all the air is exhausted.
Instructions for use again:
Connect the bottle to the pump adapter.
2. Screw / slide the pump tip onto the nipple.
3. Press the trigger (if with a valve) or press it against the nipple.
4. Monitor tire inflation. It should be well fenced, and the camera should not bite anywhere between the tire bead and the rim, otherwise you will have a sudden and very unpleasant surprise in the form of a strong BAM!
P. S. By the way, some manufacturers recommend not driving on carbon dioxide for a long time. It passes through the rubber faster and escapes from the chamber. Option is to deflate it and pump air.
P. P. S. Perhaps, in the case of carbon dioxide, tubeless tires on a bicycle will help. The rubber is thicker there, which means there will be less pressure etching, and it is definitely more difficult to puncture on a tubeless. Not bad as an option!
Algorithm of actions
The pump is an indispensable accessory for any cyclist. Thanks to the presence of the device, you can quickly inflate the wheels on your own. Self-service will eliminate the need to contact gas stations or service centers. Detailed step-by-step instructions will help you cope with the task.
How to properly inflate your bike tires
No effort is required to properly inflate your bike tires. The only thing you need is the right tools. Using these methods, you can easily find your type of valve and select a pump that is exactly suitable for your bike model, respectively, and learn how to properly inflate your tires.
How to inflate a flat tire with a hand pump?
Probably every cyclist at least once in his life faced such a problem as a deflated camera. And according to the law of meanness, this trouble most often lies in wait for us somewhere on the road, away from home and the service center. Therefore, a cyclist must definitely master the skills of inflating a wheel, especially since there is nothing difficult in this.
Despite the fact that in the modern world there are many methods of inflating a bicycle wheel, most cyclists prefer a hand pump, because it is always at hand and can help out in case of unexpected wheel damage. Therefore, in this material we will consider this particular type of wheel inflation.
What you need to know about bicycle wheels
In order to accurately measure whether the wheels are sufficiently inflated, you must have a pressure gauge with you, a special device for measuring the number of atmospheres in the tires. However, the optimum pressure may vary depending on the type of tire and its manufacturer.
A bicycle tire consists of a tube and a tire. The tire is responsible for the limiting pressure values. Regardless of the chamber, the optimal pressure to be maintained in the tires depends on the values indicated on the tire.
Regularly checking the tire pressure and keeping it within acceptable limits will have a positive effect on tire life, and will contribute to the most comfortable ride, while spending the least effort to maintain and develop speed.
A standard tire can be inflated without a pump. A constant flow of air is required for a successful procedure. There are several effective ways:
- A vacuum cleaner. Many household appliances are equipped with a blow-off function, in which air is blown out rather than drawn in. This mode can be used to inflate a bicycle wheel. Connect the device to the nipple using a flexible hose. The efficiency of work depends on the tightness of the connection. To increase the density, improvised items are used. pieces of textiles, rubber gaskets, clamps.
- Bottle pump. A pair of plastic containers will be required, one will serve as a rod, the second as a cylinder. The bottom of the first vessel is cut off, inserted into another, the connection to the nipple is made using a thin hose. The junction with the bicycle or scooter camera is coated with sealant or sealed with a rubber gasket.
- Pumping by mouth. This method will be useful when the wheel has gone down on the road, and there is no special device at hand. You need to remove the cap from the nipple and inflate the chamber without a hose, just like a balloon. The procedure is quite complicated, when screwing the cap, you can release all the air in the tires.
Although you can pump up the chambers with the help of available tools, it is better to use a classic hand-held bicycle pump. This simple device is compact and should always be taken with you on long trips.