With the rapid development of bicycles, many riders intend to buy or already have carbon fiber bicycles, but there are still many riders who do not have a detailed and systematic understanding of the performance of carbon fiber materials. We often encounter riders who ask, carbon fiber frame and How long will the wheels last? Is strength feasible? Will you’re frame break if I weigh 120 pounds? So what exactly is carbon fiber? How good is his strength? What we usually call carbon fiber frame, in fact, should be called carbon fiber composite frame more accurately, which is a kind of fiber-reinforced composite material. It is made of carbon fiber and epoxy resin. In CFRP, we call carbon fiber the reinforcement material, which is the dispersed phase, and the resin is called the matrix material, which is the continuous phase. The reason why it becomes one of the materials of choice for high-end bicycles is determined by its own mechanical and chemical properties. His characteristics: 1. High specific strength (ratio of strength to density) and specific modulus (ratio of modulus to density). This has just resulted in making the frame of the same strength, and it can be made very light by selecting CFRP (carbon fiber composite material). The following compares the mechanical properties of several common structural materials Material Density (g/cm3) Tensile Strength (Gpa) Elastic Modulus (Gpa) Specific Strength Specific Modulus Steel 7.8 1.010 206 0.13 26 Aluminum 2.8 0.461 74 0.17 26 Titanium 4.5 0.942 112 0.21 25 CFRP 2 1.45 1.472 137 1.02 95 CFRP-1.6 1.050 235 0.66 147 2. Good fatigue resistance Fatigue failure of general metal materials is a sudden failure without obvious symptoms, while CFRP has good fatigue resistance, and there are obvious symptoms before failure. Several CFRP frame bikes of the Hebei Mountain Team have visible cracks, but still retain most of their strength, which greatly improves the safety of riding. Reason: The reinforcing fibers are thinner and have fewer defects. The matrix has good plasticity and can inhibit the development of cracks. Of course, because it belongs to cutting-edge materials, technical processes, and quality control, it is still immature and needs to be tested in practice 3. Good damage safety There are tens of thousands of independent fibers on the CFRP cross-section, even if some fibers are broken due to overload, the load will be quickly redistributed to the undamaged fibers so that the component will not completely lose its bearing capacity and break in an instant 4. Strong shock absorption ability (1) CFRP has a large specific modulus, high natural frequency, and is not prone to resonance (2) CFRP is a heterogeneous multiphase system. There are a large number of interfaces between the fiber and the matrix. Since the interface has the effect of reflection and absorption on vibration, CFRP has strong vibration damping and can quickly attenuate vibration. 5. Good high-temperature performance Carbon fiber can withstand a high temperature of about 2000 degrees Celsius without changing its strength. Therefore, the overall temperature resistance of CFRP depends on the epoxy resin used as the matrix. The heat resistance of various grades of epoxy resin is different, and the additives will also produce influences. CFRP frame will have no problem in this respect. 6. Good aging resistance Matrix material Epoxy resin with appropriate additives has excellent anti-aging properties, and the general service life is 20 years. Therefore, the CFRP frame will be mechanically damaged first, so there is no need to worry about its chemical aging 7. Strong designability Fiber composite materials are composed of two or more materials with different properties, and their structure includes fibers, matrix, and interface. All three aspects will affect the performance of CFRP. The fiber in CFRP is carbon fiber, which is used to bear the load, while the matrix is used to protect the fiber laying shape, allow the fiber to bear compression and shear loads, disperse the transmitted load, and protect the fiber.
The travel of a bicycle front fork is how deep the front fork can be pressed, that is, the distance that the front fork travels from fully relaxed to the lowest point of the front fork. Generally speaking, it is the shock absorption effect. Basically, the longer the stroke, the more force it can withstand. Larger, the better the shock absorption effect. It can be said that the up and down the amplitude of the front fork after being impacted. Therefore, bicycle forks are divided into Rigid Forks and Suspension Forks.1. Rigid Fork of a mountain bike, front fork without shock absorption function. Features: lightweight, good hardness, no gaps, more convenient operation, big head angle, low wind resistance, the center of gravity more forward, more direct force. It is suitable for high-speed riding on flat roads and it can also be used on slightly bumpy roads. Flat roads and climbing slopes have advantages, especially the Rigid Fork of carbon fiber. Disadvantages: Not suitable for fast cycling on bumpy roads.2. Mountain bike Suspension Fork refers to the front fork with shock absorption function. Features: Good elasticity, can absorb the vibration brought by the bumpy road to the mountain bike. Suitable for fast cycling on bumpy roads such as potholes or mountain roads. Disadvantages: heavyweight, complicated structure, and expensive.It can be said that each has its own advantages, so it depends on everyone's daily needs to choose to buy.
When it comes to maintenance, each of us will have a strange flower around us. Experienced riders are not excluded!In fact, wrong maintenance methods hurt the bike more than no maintenance!Don't feel guilty! It's not that you are not good at it, but your maintenance method is not good!01. Use the wrong toolEverything you think you need can mess up your bicycle. Many riders think that it's nothing to burn money on the bicycle, but they use the cheese-like hexagonal tool to "fix" the bicycle!A mismatched hex tool can cause damage to your bicycle.You may also want to buy some suitable wire pliers (not vise or garden trimmer)A bottom bracket tool (not a hose wrench)A foot wrench (not an adjusting wrench)A tool for unloading the freewheel and a chain whip (not to fix it on the workbench, this will not only damage the freewheel but of course the workbench)02. The wrong adjustment of the headset will cause a series of bad thingsWe have seen many people think that they can tighten the headset by simply turning the bolt on the cap of the headset.In fact, if you want to tighten the headset to the correct torque value, you must first loosen the bolt on the stem, and then tighten the bolt on the cap of the headset. But do not use too much force!03. Don't understand the limits of one's abilitiesSome questions are left to the technician. Trying to repair the bicycle by yourself is indeed a rewarding experience (even if it is a little bit).Knowing your ability to repair your bicycle clearly-it's always right to find your place!In most cases: If you have questions about repairing a bicycle, let go of your pride and leave the repair to a professional technician. Don't do a "professional" overhaul of the bike before an important race or event. This is likely to cause bitter results for the next day's race.04. Torque is too tightYou may think "Well, it looks like 5Nm", but that obviously won't workIf the screws and bolts on the bicycle are loose, it will obviously cause a lot of problems, but it is also not good to screw them too tightly.If it exceeds the torque value indicated in the figure above, it will cause the thread to slip, or the parts will be tightened too tightly, which will easily crack or break.We suggest you buy a smaller torque wrench for bicycles05. Install tires with a tire leverThe magic is that sometimes it's rainy, sometimes it's cold, and even when you ride somewhere halfway, it will blow out!God help me, I just use a spoon! But please never do this. Instead, you can try to install the bead into the groove in the middle of the tire, and then slowly adjust its position by hand instead of brute force.06. An inappropriate freewheel is installed on the bicycleYou still naively think that you can do it this way. Actually, some people just buy a 10-speed freewheel and install it on a 9-speed bicycle. Naively think this is all right?It is absolutely impossible! Don't think that there is a shortcut because there is no shortcut.How many speeds your derailleur is, and what is the shifting function, these are all preset and each gear change is matched with a corresponding shifting cable, these are not just for you to install more or fewer chains at will The gear teeth can be changed because they are not compatible.07. The cable is worn outWorn cable is something we don't like to see.Route capWhen you squeeze the cable cap, remember not to squeeze it too tightly, or you may break it. The normal bicycle wire pliers are well-controlled at this point. You can use it when making operations, not the kitchen scissors or hedge shears.08. Pull out the inner cableTreat internal cable: be careful!When you find that you accidentally unplug the inner cable from the frame, there should be nothing that scares you more than this!You hope that one day it will magically find its way home-but it is impossible!The correct approach is to extend the cable into a tube a little narrower than the frame tube before pulling out the cable completely, and then putting the tube into the frame so that the cable does not easily fall out.Even the most experienced riders will get confused and feel at a loss! Get a bunch of unsuitable tools and make a bad decision on repairing a bicycle. Without one or two knowledge supplements, the maintenance should be terrible!
The biggest challenge of the early tires was how to properly and reliably fix them on the rim. The method of bonding to the rim was very effective in the past, but there is no shortage of other fixing methods, such as hook-shaped rims and wire binding. But these methods are too complicated, and finally evolved to the present, clincher, tubeless, and tube have become the most mainstream form. Nevertheless, the debate on the performance and advantages of different tires is still fierce.The ideal tire:The ideal bicycle tire has lightweight, has good puncture resistance, excellent grip, not too short a life span, is a reasonable price, has low rolling resistance, and comfort. But these are ideals after all. In reality, many elements are mutually exclusive. Under the current technical background, ultra-light tires do not have very good puncture resistance. Therefore, we often have to compromise on one or more performances. The choice depends on our actual needs.Many people regard the tire as a static structure with a single function-a rubber tube, which contains gas, but there are many factors acting on the tire on the road. In fact, the tire is dynamic and constantly changes its shape to adapt to road changes. Wheel angle and rider's weight.It is for this reason that the flexibility of the tire is a precious feature. When the wheel is rolling on the ground, the softer tire is easier to fit and rebound, and its grip, rolling resistance, and overall feel are better.The choice of material largely determines the final weight, softness, and durability of the tire. Lightweight materials are often used to produce high-speed tires with low rolling resistance and soft surfaces, but their puncture resistance is not strong. Easy to wear and expensive. Heavy materials can enhance puncture resistance, wear and cost less, but have higher rolling resistance and decreased comfort. These principles also apply to the clincher, tubeless or tubular tires.Similarity:1. All three types of tires include a braided shell, which covers the air chamber and is covered with a rubber tread.2. Use the same material or manufacturing process.3. The appearance is similar when installed behind the wheel.4. These three tires can be designed specifically for different riding habits, performance, price, and usage scenarios.In contrast, the difference between the three tires becomes simple-how to form and accommodate the air chamber. For tube tires, the air chamber is completely enclosed inside the tire. The open tire needs an inner tube to contain the gas. The tubeless tire itself is an air chamber, but it needs to be matched with a special tubeless rim.To choose a tire, look at the wheel first:Each tire system needs a special rim to match, in other words, the user should choose the tire according to the existing rim. Tube tires cannot be used on clincher wheels. Clincher or tubeless tires cannot be installed on tube tire wheels. Clincher tires can be installed on wheels that support tubeless tires, but inner tubes must be used. Tubeless tires can also be used. It is installed on a standard clincher wheelset, but it can no longer be used as a tubeless tire and can only be used with inner tubes.The design of the tubular tire wheelset is different from the design of the conventional clincher wheelset. On both sides, there is no hook-like sidewall and reinforcement to fix the tire. Therefore, the rim of the tubular tire is always lighter than the same clincher rim and has a concave section. The tubed tire can be properly placed, but the safety of the tube tire depends on the quality of the glue or tape.Tubeless tires are similar to the rims of standard clinchers but are more refined. Both have similar sidewalls (although some tubeless tires have used flat sidewalls without hooks), and the inside of the rim is similar to ridges and ridges. The tubeless tire bead on both sides of the tube is more compact than the clincher, so the airtightness of the tubeless rim and the tire will be significantly higher than the clincher wheelset. These ridges cooperate with the bead of the tubeless tire to form an airtight seal, which also explains why the tubeless tire will hear a snapping sound when it is pumped up. The tubeless tire must also be separated from these ridges when replacing or repairing.For dedicated wheels, it is difficult for users to mix different types of tires, but using suitable rim tape (to seal the rim spoke openings), vacuum nozzles, and sealants, some common open tire wheels can also be used. Tubeless tires were modified to seal the tire pads, and tubeless tires were used instead.Material and structure:Some people believe that one type of tire must be better than another type. However, under the same material, the difference between different tires is very subtle. More differences depend on the material used in the tire. Any light and soft tire can bring smoothness and speed. The riding experience, whether tube or not.The three types of tires have the same type of material to form the tire casing and tread. Nylon is often used to weave the casing, rubber is commonly used in the tread, and others such as Kevlar, bulletproof fiber Vectran, and graphene. Or cotton and silk are only used as reinforcement, not completely replaced.The casing is woven by threads. The finer the thread, the more the number of threads. The unit of measurement is the number of threads per inch, which is the so-called TPI. Fine tires can reach up to 320tpi. The low line count is lighter and more supportive.Bicycle tires use a lot of rubber to improve the overall feel of the tire. For most tires, the tread is vulcanized by heating, adding a curing agent, and fused with the tire, but this will harden the tire, and soft tires are often glued. The rubber is fixed to the casing by the agent. The hand-made tubular tires and the so-called "open tubular tires" (used in clincher wheels, tubular tires with bead) are to avoid vulcanization as much as possible to ensure the flexibility of the tire.For the tire tread, there is no intuitive evidence that the tread pattern will directly and greatly affect the grip (limited to road vehicles), and more importantly, the user's air pressure.Impact resistance:No matter what kind of tire, more or less anti-puncture materials are used, depending on whether the final weight of the tire is important. However, puncture-resistant materials will make the tires harder, and bumpier, and increase road resistance. Therefore, they will be used with caution in competition tires. In contrast, strong and heavy commuter tires use a lot of Anti-puncture material and have greater impact resistance.There is no such thing as a car's explosion-proof tire on a bicycle. Of the three tires, tubeless tires undoubtedly have advantages here. This kind of tire is resistant to squeezing and pressure. The repair fluid in the tubeless tire can automatically repair minor cracks, but the sidewall has a large cut. It will still damage the sealant and cause the tire to leak.Tubeless tires are very beneficial for off-road riders, because tubeless tires can be used at an air pressure of less than 40psi or less than 3bar, and can increase extra grip and traction, but for road bike riders, this advantage is not What's the big use, it is the lack of tube tires and opens inner tube structure, which slightly reduces the friction between tires. Users of Adventure or Gravel Bike may prefer tubeless tires, but tubeless tires are not a prerequisite for on-road and off-road.Larger size tires have larger air chambers (air intake), which can allow lower air pressure and obtain the same degree of expansion without having to enter too high air pressure, so it can also increase the comfort of the bicycle.Installation, maintenance, and repair:For most ordinary riders who do not have logistical services, choosing any tire system is simply inconvenient for later maintenance. In this regard, ordinary clinchers have great advantages. The tube tire installation process requires a certain amount of man-hours and a certain amount of experience, which is a difficult task for beginners, although the tube tire double-sided tape has simplified the entire process. After the tube tire ruptures, the repair liquid filled in can be used for short-term remediation, but some repairs can not be applied to high pressure, so it is not as practical as replacing the new tube tire.Installing a tubeless tire for the first time is also challenging. The rim must be kept sealed, the vacuum nozzle must be installed correctly, and enough sealant must be added to the tire. Although it is possible to use an air pump to inflate the tubeless tire, an air compressor with a larger instantaneous air intake is a better choice.After installation, the tubeless tire promises a longer maintenance interval, but the wear of the tire cannot be ignored. The sealant will slowly dry over time. When the repair fluid or sealant is dried, the perforation of the tire will not be repaired, so The sealant needs to be added every few months.The perforated tubeless tire casing can be repaired using conventional repair methods, but the inner wall of the casing with the sealant is very smooth, and the adhesive and the tubeless tire repair fluid will interact.Cost and product line:As the main tire system, there are many open tires on the market for consumers to choose from. There are various handmade tires on the high-end market. The lightweight folding tires are suitable for competition and training. On the other hand, sturdy steel tires are cheap enough and suitable for commuting. , In short, clinchers of all prices can be found.Expanding to the inner tube of the open tire, we can find several kinds of standard butyl inner tubes, puncture-proof inner tubes, lightweight butyl inner tubes, and latex inner tubes on the market. The difference between them is often very small, and the weight, road feel, and stab resistance are not What is the amazing gap?Tubeless tires are a relatively new product, so there are not as many options as clincher tires, and these tires are usually more expensive.Tubular tires are often expensive, but there are also less expensive training-grade tubular tires on the market to reduce weight and increase comfort. Unfortunately, a tire puncture may end the life of the tubular tire, so the ongoing cost of maintaining a set of tubular tire wheels may be high.Tubular tires: It has long been recognized as the golden choice for competition-level road bikes. Tubular tires are widely used by professional riders. However, because of the difficulty and time-consuming installation and maintenance, tubular tires have only limited appeal to ordinary riders. However, tubular tires can provide the greatest weight savings.Purpose: race, training, cross-country, long-distanceAdvantages: lightweight, matched wheels are also very lightweight, and more resistant to "snake bites" compared to clinchers.Disadvantages: Installation is more difficult, and it cannot be quickly repaired by the roadside. Tubular tire repair technology can be called "world cultural heritage" (true and manual stitching).Need accessories: special tube tire wheelset, tube tire glue, or tube tire double-sided adhesiveMaintenance: Need to check the tire tread wear and check the adhesion of the tire to the wheelCost: Above average, although it is possible to buy tube tires at their early cost of 60usd, the double-sided tape required adds additional costs. Users should spend time learning to install them on their own to save costs.Clincher tires: Clincher tires are not as popular as the other two types of tires. Clincher tires are everywhere, and the ease of use in the tire system is far superior to other competitors.Purpose: race, training, cross country, commuting, long-distance.Advantages: simple installation, convenient disassembly, everywhere, many products.Disadvantages: low pressure is easy to "snake bite", steel wire tires increase weight, hook-shaped bead increases the overall weightNeed accessories: clincher wheelset, tire pad, inner tubeMaintenance: detection of tread wear and foreign matterCost: From high to low, consumers will face a huge product range, ranging from 30 USD to 100 USD. The inner tube is relatively cheap, but it is a continuous cost.Tubeless tires: As a new product in the market, tubeless tires are favored by off-road enthusiasts because of their excellent puncture resistance. There may not be many tubeless tires for roads, but these products have made great progress.Purpose: race, training, cross country, commuting, long-distanceAdvantages: Excellent puncture resistance, low tire pressure can be used, and repair fluid provides additional puncture resistance.Insufficiency: Installation requires technology, product types are limited, and maintenance is rather chaotic (mending fluid overflows)Need accessories: Tubeless tire wheelset, tire pad, tubeless tire valve, repair fluid sealant, compressed airMaintenance: Detect the tread wear and replenish the repair fluid for a few monthsCost: Medium to high. Tubeless tires are often more expensive than clinchers. Tire pads and air nozzles can be regarded as one-time costs, but the repair fluid will be a long-term cost, requiring considerable time for maintenance and some equipment. For example, compressed air tanks or air compressors.How to decide which tire system to use:From the above discussion, it is not difficult to find that each tire system has its advantages and disadvantages. In general, high-end clinchers (cotton tube structure) and tubeless tires have been able to achieve or even exceed the performance of tubular tires. For truly lightweight users, tubular tires are the best choice. For most riders, the easy-to-maintain clincher has obvious advantages. However, the choice of tires is sometimes not completely arbitrary, depending on what the existing wheels can be used. After all, the cost of changing wheels is much greater than the cost of changing tires.
The first is the problem of brake fluid. If different brands use different brake fluids, the seals used will be quite different. For example, the brakes using DOT oil and the brakes using mineral oil are different in the selection of seals. There is a big difference because the DOT requires a stronger corrosion resistance of the seal.The second reason is the hydraulic ratio. if the piston area of your brake lever is fixed, then if the piston area of the caliper you replace is larger, you must consider whether the capacity of your brake lever piston can drive a larger caliper.For example, if the brake lever corresponds to a two-piston caliper, replacing the four-piston caliper with a larger diameter and area at this time may cause the problem of excessive stroke. The reverse is also the same. If the caliper area used is smaller, the brake lever stroke may be too short. This will directly affect the linear performance and braking strength of the brake design.
People who want to lose weight through exercise will ask: "Is it possible to lose weight after exercise?" and "How come it seems that the more you exercise, the more fat you get?"Simply put, if you want to lose weight, the necessary condition is that the calories you consume are greater than the calories you take, and if you want to consume more calories, you rely on exercise. But why do many people feel that the effect of exercise to lose weight is not obvious? Zhang Peirong, a nutritionist who also loves cycling and running sports, said that most of the calories consumed by exercise are often not as many as we think; but the calories eaten are more than expected! Therefore, the key to weight loss is diet control, and the influence of exercise is second.Does appetite improve after exercise?Most people eat more after exercising. There may be two situations. One is an exercise to a certain level and consumes a lot of calories. Naturally, they will feel hungry and want to eat; the other is to compensate for their mentality. I felt that I could comfort myself, so I ate more food.But is it really hungry, or just thought it was hungry? Zhang Peirong believes that you must quantify your calorie intake and consumption to have a basis, not just by feeling!In summary, exercise is the help you lose weight, and the desire to eat is the resistance to weight loss. Whether you can lose weight depends on whether it helps you or the resistance. Therefore, some people lose weight after exercise, and some people lose weight after exercise! If you want to lose weight effectively and healthily, you must increase your calorie consumption and control your calorie intake.Control your diet and pay attention to caloriesEspecially for people who do not exercise regularly, they may regard cleaning or shopping, this type of "activity" as "exercise." Or go for a walk outdoors, walk a few laps on the playground, and sweat as if you have exercised, but in fact, it is only caused by the hot weather. Even sports such as cycling for 10 kilometers and running for 3 kilometers may actually consume less than 200 calories.When the intensity is insufficient and the time is not long, so the calorie consumption is not much, the mentality is often compensated by eating more.Therefore, after exercise, try to choose low-calorie and satiety foods so as not to exceed your calorie intake! Especially at this time, muscles need to supplement a lot of glycogen and protein to repair tissues. Therefore, the diet should be mainly carbohydrate food, with the appropriate amount of protein, such as sandwiches, sweet potatoes, steamed bread, toast, etc., and a small amount of meat, one piece Tea eggs, soy milk, low-fat milk are fine.Increase strength and increase consumptionIf you want to increase the calorie consumption of exercise, you must increase the time and intensity of exercise! Many people think that sweating means enough intensity and exercise, but in fact, sweating is not a good indicator, it is often just because of the hot weather. It is recommended that you exercise for at least half an hour, which is also a big advantage of cycling, which can maintain a longer exercise time in an aerobic state. Secondly, the intensity of exercise should be enough, whether it is to walk, jog or ride a bicycle, to reach a moderate intensity, the easiest way is to measure the heart rate, which is about 130 or so; if you don't have a heart rate monitor, let yourself feel a little breathless during exercise. , You can talk, but there is no way to continuously talk and sing intensity, which can effectively increase calorie consumption.Eating less and getting more exercise is the only way to lose weight and lose weight.Increase basal metabolic rateOf course, many people are worried that with the control of diet, when calorie intake decreases, the body's basal metabolic rate also decreases. This is correct. The body has a protective mechanism. When our body feels a crisis when the calorie intake is reduced, it will automatically enter the "energy-saving mode" to reduce the basal metabolic rate. In addition to weight loss, the basal metabolic rate will also Follow the decline, it will enter the so-called stagnation period for weight loss.If you don't want your metabolic rate to drop, you must train your muscles. In addition to aerobic exercise, you must also add weight training to increase your body's muscle mass, which will naturally increase your basal metabolic rate and calorie consumption.The conclusion is that if you want to lose weight and lose weight, eating less and hyperactivity are still the same rules, and neither is indispensable.
First of all, pay attention to your brake feel in daily use, especially after the oil change, if the brake is significantly softer and the stroke becomes longer, it may be that the air in the caliper piston has not been removed. If this is the case, If it is relatively mild, it will generally return to normal after a period of use. If this is the case for a long time, you must consider re-exhausting. If your residence has a vacuum lubricator with hydraulic brakes, it is recommended to replace it for better exhaust. Empty the air in the caliper.The other thing is to check for excessive wear of the film. Under normal circumstances, as the film becomes thinner with the use of the caliper, the piston of the caliper will protrude more, and real-time maintenance will ensure a reasonable gap between the film and the disc. This is also a major part of the open oil circuit. Advantage. But when you change the oil, the piston on the caliper will be completely pushed into the caliper due to the block, so if you continue to use the old pad and install it directly on the bike, the brake stroke may be too long, Although you can squeeze the brake a little bit by letting in to make the pad gap smaller and improve the brake lever stroke, the best way is to replace a new pair of pads.Generally speaking, it must be replaced when the wear of any one side reaches 2/3. The wear of the film is not completely horizontal. In many cases, the wear is inclined, so the wear 2/3 should be the thinnest. The place prevails. At this time, replacement is very necessary. Continued use may damage your caliper.If your brakes have been used normally, but suddenly start to soften within a few days, the stroke becomes longer, and the brake dead spots are blurred or even disappear, then check whether there is an oil leak. Generally speaking, oil leakage will appear in the brake lever piston part, and some will appear around the caliper piston. If it appears in the piston part of the brake lever, basically just replace the new piston seal to solve the problem.The oil leakage at the caliper is first eliminated to eliminate the problem of excessive exposure of the piston caused by the excessive wear of the film, and then the Y-shaped sealing ring around the piston should be replaced, or the entire caliper can be replaced directly.Other problems such as weak brakes, obvious dead spots, but unable to stop. If the brakes have problems such as howling, you can basically replace the pads directly. These conditions are usually caused by oil stains on the discs during wiping, transportation, or even rain. The best solution is to replace the new disc and thoroughly clean the disc.
Today I will talk to you about some anxiety about cycling. Of course, you may not have anxiety here, but if you are cycling, it is possible to encounter a few anxieties.1. Anxiety about lack of moneyMost riders don't have much money, and they also need to go to work to make money to support their families. Ever since the bike was brought in, the equipment was bought, the bike was upgraded, accommodation, registration fee, and dinner together… just like this, the wallet is getting thinner and thinner every day. Once you set foot on the way to riding a bike, the wallet is no longer in control!2. Bike crash anxietyI spent so much money on buying a bike, and I didn't pay enough attention to fall it once. The cost was too high, so I usually ride it carefully and lend it to others. It's a nightmare… Every time I ride out to play, I fall into pits and mountain roads. I'm afraid it gets hurt.Seeing other people crashing or crashing yourself will feel that riding is too dangerous, but after a while, I want to ride a bike again, always moving forward in entanglement.3. Trust anxietyI bought a bicycle secretly and did not dare to tell my family. I was afraid of being scolded by my parents, saying that riding a bicycle is very dangerous, and riding a bicycle will affect learning. Can riding a bicycle be a meal? I'm also afraid that my wife will not support it. Anyway, all kinds of incomprehension, all kinds of worry.4. Lost bike anxietyI bought a bike I like, and it's all news among my friends around me, but while enjoying this satisfaction, every time I see others lose their bikes, I can't wait to see if my bike is safe.The bike must be more careful and cherish the new bike within your sight, and you can't wait to tie it together. Even if the bike has been locked with two big locks, plus GPS anti-theft positioning, but I still can't make sure that when I ride out, I'm not sure about parking…5. Anxiety of not being able to ride a bikeRiding a bike is addictive. If you don't ride for a day, you will feel uneasy. I always feel that something is missing! After riding, I think about where to ride next time. Business trips and bad weather will make you worry about whether you can ride a bike!6. Seeing that riders don't wear helmets are also anxiousIt's not just myself, but seeing the riders around me riding without a helmet makes me anxious for others.They think that just riding by the river, in the park, or commuting to and from get off work, in general, are the roads they are most familiar with. There is no need to wear a helmet. In fact, it is very dangerous to go on the road without wearing a helmet. Wearing a helmet while riding a bicycle can protect you at least when you crash.
Today, I will talk about ways to improve cycling comfort and speed without "spending much money".1, SaddleA large part of the uncomfortable and uncomfortable cycling can be attributed to the seat saddle. Therefore, most brands offer saddles of various shapes, sizes, and lengths.Many bicycle shops now have multiple brands of saddles, maybe you can try the one that suits you best!About 20 years ago, Specialized first introduced Body Geometry technology to make the cushions have different widths, the purpose of which is to ensure that the seat bones are properly supported to prevent numbness and general discomfort. Whether it is comfortable or not, try more to know! In addition to the width and shape, many riders find that the uncomfortable solution is only to have a groove in the middle of the cushion to relieve pressure. For example, Trifox's CS100 comfortable carbon bike saddle & seat.2, cycling pantsSince there are so many different kinds of cycling pants, the padding in cycling pants should be a uniform standard, but the fact is just the opposite!A few years ago, Endura launched the FS260-Pro SL, with three different pad widths to choose from to suit different riders. Further, relieve the discomfort of the hips.Following the trend, Fizik also introduced a series of cycling pants designed to fit with the saddle. They use different shapes of pad design, and different fabrics and fabric shapes.3, the width of the handlebarIn fact, in the vehicle parameters of road bikes, the width, range, and shape of the handlebars are very different, which also has a deep impact on cycling. Usually, we choose a handlebar that matches the shoulder width.From the classical handle, the small curved handle, the ergonomic handle, their reach or sink amount are different.The key to selection is:Width:Too wide has large wind resistance, and too narrow is not conducive to control. Generally speaking, you can choose shoulder width, but make some adjustments according to personal preferences.Features of suitable bicycle:Road bikes are suitable for curved handlebars, and ergonomic handlebars for a modern frame can complement each other.4, The stemFeel your handlebar is too far? Can't stand your waist? Even a sore wrist? The culprit may be a stem of inappropriate length, whether it is too short or too long.There are many specifications of the stem, and there are many variables from one person to another, but there will only be standard stems on the whole bike, and there is no possibility of optional, so you need to understand what kind of angle and length are Best for you. Trifox's X12 carbon fiber road frame offers 90mm, 100mm, and 110mm stems, you can buy them according to your needs. A too-long stem may make your posture lean more forward, although there is a little aerodynamic advantage, your waist may protest earlier!5, lock pieceIf you are a rider who uses lock pedals, then you must pay attention, the correct and perfect installation of the lock plate will help you get the best riding condition!Even if the position of the lock plate slightly deviates, it can easily cause discomfort, reducing efficiency and power output. The two key factors for setting the cleat are the angle and the front and rear position.Put on the lock shoes, mark the positions of your first and fifth metatarsals on both sides of the shoes, and then draw two parallel lines on the soles, as long as the position of the locking pedal is placed between the two parallel lines.The angle problem is due to the fact that different people's feet may be outside or inside, and more should be normal.The lock plate of the outer eight-character should be rotated inward, and the lock plate of the inner eight-character should be rotated outward.6, cycling suitsThe easiest way to get a speed bonus is to wear tight clothing. Loose and flowing clothes will only increase wind resistance, on the contrary, tight clothing can significantly reduce resistance.Cycling is fast and the time is short, so we can go home early to wash and sleep!7, helmetNowadays, road helmets with aerodynamic characteristics are beginning to be sought after, and choices are gradually increasing. Compared with conventional helmets, they can effectively reduce wind resistance without sacrificing ventilation.8. WheelsA large amount of wind data shows that carbon wheels do have more aerodynamic advantages than aluminum wheels. Here we recommend Trifox's carbon fiber wheels. Depth has 40mm, 45mm, 50mm, and 60mm with a width of 25mm, and there are also quick-release and barrel axle options. There is always one that meets your needs.
