The various rolling bearings used in bicycles (mainly hubs, bottom brackets, headsets, pedals) can be simply divided into bearing and ball gear bearings.So what exactly are bearing shaft and ball gear bearing?The bearing shaft actually refers to a shaft that uses an industrial deep groove ball bearing assembly as a rolling bearing. The structure can be seen in the figure below. Its characteristic is that it can be repaired by replacing the bearing assembly when damaged.The ball gear bearing is composed of a bowl, a shaft gear, and a ball in the middle. They and the hub body together form a large bearing. Because the ball does not need to use a cage-like industrial bearing, the ball gear structure bearing of the same size can accommodate more balls, and each ball has a larger contact area, which can withstand greater pressure.All Trifox carbon fiber road bike wheelsets use bearing hubs.
Many riders have bought cycling pants. Considering hygiene, protruding pants, appearance, etc., they often consult whether to wear underwear or not.Answer: After wearing cycling pants, underwear is no longer suitable.The picture below can prove that professional riders do not wear underwearIn 2003, the Austrian cyclist Hasselbacher tried to squeeze along the border fence during the sprint stage of the third leg of the Tour de France on July 8. As a result, he fell heavily and his clothes were all covered. Was scratched. However, despite the ragged clothes, Hasselbacher even showed most of his buttocks, still stepping on the bike to continue the race.On July 07, 2004, on the third stage of the Tour de France, Hushofder exposed his buttocks to complete the race.Chris Froom was treated after a crash on the fourth stage of the 2014 Tour de France.The benefits of wearing cycling pants for cycling are:1. Reduce wind resistancev2. Increase the comfort of the buttocks and saddle3. Reduce friction4. Quick-drying wicking functionThe reason for reducing friction is that long-distance cycling pants rubbing the skin for a long time will produce varying degrees of inflammation or other skin problems, and the material of cycling pants can effectively reduce friction. If you wear underwear, the friction-reducing effect of the cycling pants will be isolated, and it will not work. And the underwear is generally made of cotton, which has a poor sweat-wicking function, moisture + large friction, which is harmful to the human body!
The function of bicycle helmets to protect the lives of cyclists is beyond doubt. According to the report of the American Highway Safety Insurance Research: 98% of the deaths from cycling in the United States in 1999 did not wear a helmet, and those wearing helmets in collision accidents reduced their risk of serious head injuries by 85%. Not only does the helmet feel cool, but it's also really cool, at the same time, the ventilation holes on the helmet can make the head feel cooler. As an old saying goes, a clear head is easier to win the game.The principle of helmet protection for the head is that the person wearing the helmet can make the hit head stop relatively slowly. If the person without the helmet hits the head on the ground, the brain will swell and cause hemorrhage. The convergent spherical shape in the helmet Objects can absorb the impact and avoid these unfortunate events.Choosing a helmet that suits you can make you more handsome. What is suitable for you? Take the helmet with the rim of your forehead at the center of your forehead. The helmet will not circle around your head, and will not move around The shaking will not have the feeling of clamping, but it will protect your head easily and naturally. Naturally, the breathability cannot be ignored. The more pores, the better the breathability, but under the premise of ensuring safety, this is not a consistent rule, because some helmets do not have many vents, but the air permeability can be achieved in the design.Helmets are the first equipment to ensure human safety, so the helmets of regular manufacturers will have corresponding standard certification marks, such as the American Society for Testing and Materials (ASTM) or Snell Foundation, and there is usually some international, national or regional authoritative certification agencies Certification mark.It's right to choose a lightweight, sturdy, and breathable helmet. It has large vents and good ventilation. It has an alloy frame inside and is reliable in strength. It has a COOLMAX lining and is comfortable to wear. Some helmets have insect-proof nets on the front. , Is a very considerate design.[Texture] Helmets are generally made of foamed materials (ordinary or high-density, the difference between the two is its anti-collision effect) and has a smooth shell surface;[Weight] The thing that presses on the head should not be too heavy, which is why the riding helmet does not use alloy materials;[Inner lining] is the part of the helmet that is in contact with the head. It can improve the wearing comfort at ordinary times and produce a cushioning effect when the head is hit. A well-made helmet has a large inner lining coverage, better texture, and a stronger bond with the inside of the helmet;[Wearing Comfort] It is mainly due to the personal feeling of weight, lining, straps, and head circumference. Wearing a comfortable helmet can greatly reduce the pressure on the rider's head and neck and maximize the impact on the rider. Improve the protection effect;[Breathability] The long-term airtight state of the head will have a bad effect on the scalp and make the rider feel uncomfortable. Therefore, a good helmet has more holes or a larger hole area, which is to improve the breathability;[Wind resistance effect] The helmet puts the human hair in the helmet, which reduces the wind resistance of the head. For those who are keen to increase speed, the influence of the helmet shape on the wind resistance is also worthy of attention.[Types of bicycle helmets] Half helmet bicycle helmets are divided into road-specific (no brim), road bike and mountain bike dual-use (with detachable brim), etc. Some friends also use helmets similar to those used for baseball or roller skating. Full-face cycling helmets are similar in shape to motorcycle helmets and are generally used by speed or climbing bike enthusiasts.
Before each ride·Check the tire pressure·Check the brakes and cable sets·Confirm whether your crank setting is locked·Confirm whether your Quick Release is locked, but not too tightAfter each ride·Check whether there are glass, sand, and gravel fragments on the tire and whether the tread pattern has been ground·Check wheel accuracy·Clean important mechanical parts on the bicycleEvery week or every 320 kilometers·Greasing the chain (dry lubricating oil, or wet lubricating oil when cycling frequently)Every month·Clean up the bicycle completely, and clean the drivetrain system if necessary·Check the chain and freewheel, check the degree of wear of the chain, and whether the chain is loose, and replace it with a new chain if necessary·Check the brake system and drivetrain cable·Check the pedals and SPD shoes for some lubrication·Check if there are any missing parts:·Stem screw·Handlebar screw·Seat post screw (or quick release)·Bike saddle·Drivetrain screw·Bottle cage screws·Frame mounting bolt (thread fixing place)·Brake and drivetrain cables·Brake, shift lever screw·Brake screw (do not change the brake center)·Check whether the tires are worn and rotated smoothly, and replace them if necessary.Every three months·Clean to shiny bikes can always ride faster and farther·Check whether the paint on the frame and the front fork is cracked or raised, which may indicate damage to the structure or part of the bike; pay special attention to the welds of all frames·Visually inspect the bent parts: Rail, Seatpost, Stem, Handlebar, Brake caliper, and Brake leverEvery six months·Check and adjust bearings, pedals, and bottom brackets (if possible: some bearing seals can only be replaced, not adjusted)Per year·Disassemble the bike for maintenance: Replace all bearings (if possible). If you ride more than 6000 miles a year, you must replace all brake cables and shift cables. In addition, people who often ride in the rain or mountain bike riders need to check their bicycles more frequently and thoroughly.Before every important journey, professional inspection and adjustment is a clear choice, which will also make the journey more enjoyable.
What equipment should road bike enthusiasts need? I will divide it into three stages, each stage requires different things.1. Into cycling by mistakeMaybe you fell in love with road bikes because of a movie, or maybe you want to enjoy the fun of breaking the wind and the thrill of cycling. In this way, you bought the first road bike in your life, and it will be equipped with some basic equipment at this time.Helmet: Let's wear a helmet. Specifically, you are responsible for your own safety and your family. Generally, it is to be responsible to society. If you lose your life because of the stupid fault of not wearing a helmet, so you don't have to lose your life and cause great pain to your family. Overall, it is very important to wear a helmet. Wearing a helmet has an extra layer of safety protection. Don't bet your life!Gloves: Regardless of the small glove, it is as important as a helmet. Gloves can not only reduce the danger caused by sweaty hands but also the thick pad part of the gloves can absorb the shock of cycling and reduce hand numbness. In addition, gloves can also be used to wipe sweat, and even provide protection in the event of a bike crash. Female bikers who are afraid of tanning can also protect themselves from the sun and keep out the cold in winter.Glasses: At the same time as improving the standard, it can also make you less vulnerable to the scorching sun, flying insects, etc. In the evening, the lenses will enhance the color, allowing you to see the road ahead clearly.Kettle: Recognize the kettle, don't contain BPA, PP5 is the basic requirement. You are not Ding Chunqiu, and you don't need to practice poison skills when riding. Take off the outer jacket of the kettle and recognize the material. Under the condition of ensuring the health, the kettle must be cool and bright. This is a bonus item. If it lasts for a long time in cold storage, it is even better.Bottle cage: light, strong, not easy to drop, divided into three materials: aluminum alloy, plastic steel, and carbon fiber, the lighter the weight, the higher the price.Headlight: Choose a reliable brand, and popular models, data is king, but not everything. As you can see, 800 lumens is the starting point for urban cycling. The above can be used, but it is not necessary.Taillights: Smart taillights are also relatively mature. You can consider at least USB rechargeable taillights. Simple and beautiful. You have grown up. Silicone battery lights are no longer suitable for your size.Headscarf: Because there are so many different ways to wear it, it is also called a magic headscarf. It can be worn on the head to keep out the cold, or for those who are more sweaty can prevent sweat from flowing to the eyes. It can be used as a mask when worn on the neck, and it can also achieve sun protection in summer. And there are many patterns and themes, you can match them as you like.Cushion bag: you always carry small things when you go out to ride a bicycle, but you will feel uncomfortable carrying a small bag or backpack, and you are afraid of losing it when you put it in your pocket. In order to concentrate on cycling, it is recommended to buy a cushion bag that can be put into a bank card, Mobile phone, and money. After buying the cycling suit, you can also replace the inner tube, tire removal rod, chain driver, and other maintenance items. Most of the styles use zippers as openings to ensure that items will not fall out.Air pump: It can hit 120psi.At this stage, you need to master the simple adjustments and maintenance of the bike, otherwise, it would be too embarrassing if the bike breaks down on the road and will not be repaired. A set of combination tools, as well as tire repair and tire replacement tools, must be prepared.2. Professional cyclingYou gradually got to know a lot of new friends. Although in the beginning, you felt like wearing a cycling jersey, like aerobics, now you feel that you are professional and handsome. Looking at the cycling jersey, looked at the wallet again, shivering, the hand of ordering food consciously reached out to the instant noodles in the refrigerator.Cycling suit: This is a step that makes you look more professional and has a compelling step to experience tight-fitting, less wind resistance, a fit size, comfortable cushion, and moisture-wicking better, please choose carefully, it is related to the lower body and the second half I won't say more about the disadvantages of buying stocks, you think it's worth it, don't be complacent and advertise to harm others.Cycling socks: It is comfortable to absorb sweat, and the air permeability and wear resistance of cycling socks are higher than ordinary sports socks, which can reduce the side effects of constant pedaling on the soles of the feet.Self-locking system: A pair of qualified lock shoes will save your pedaling effort, improve efficiency, and stable passability, improve your cycling skills, and catch up with a cycling buddy. Remember to match the appropriate pedals.Computer heart rate, etc.: Road bikes are highly planned sports that require strict and precise equipment. Know yourself, starting from the riding data. These equipment are used to collect various data about your dynamics, and in future riding, Knowing yourself and the enemy, how to maximize the output power, etc., are all things you need to study.3. Enjoy endless fun through cyclingYou gradually understand that behind the cool and passionate speed of road bikes is the beautiful process of muscle spasms, joints howl, heart twitches, alveoli burning, nose, tears, salivation, and sweat on your face, so you know how to pay behind your back. More.Airship: At this time, you feel that it is necessary to master various data of your own body, which can facilitate the improvement of your performance. From static to dynamic, bicycle size, etc., whether it is also necessary to change, start thinking (this can also be done in the first stage).Various upgrades: As a liberal arts student, you have to be like a big science guy. The weight of bicycle parts, gear ratio, power, etc. are all problems you have to solve. Looking at complex problems, you actually solve them. Just three words, "spend more money", there is no need to ask the opinions of the bigwigs in the industry. I believe that many bigwigs have only three words in their hearts, and they are expensive.Cycling platform: You hold your teammates and agree to rest today. In fact, you work hard at home, just like the college entrance examination that year, when you go home and study secretly, no matter the weather outside the window.Of course, there is a lot of equipment to add at each stage, welcome to leave a message!
Some riders may find themselves riding slower after cycling for a while. Sometimes it is the bike that drags you down, and sometimes it is your own state.If you are also confused about this, you might as well take a look at the following reasons.1. Low tire pressureIf the tire pressure is too low, it will have a great impact on your bicycle, and even limit the fastest speed you can ride. That is to say, you may need to spend twice as much effort because the tire pressure is too low. Catch up with your companions.It is best to check your tire pressure before you travel. You can check the recommended tire pressure on the sidewall, but it is best to be between the maximum and minimum. Generally, the recommended tire pressure is 100PSI.2. WindyIf you are out cycling, you are likely to encounter headwinds. In fact, headwinds are often encountered. You can only recognize this kind of thing, but the good news is that you can take this opportunity to develop a pair of strong thighs.3. Oiling the chainCompared with the previous one, this requires a little bit of technology. Basically, the smoothness of a chain that has not been lubricated for a long time is of course much worse than that of a chain that is frequently maintained. Therefore, you are likely to be more strenuous when cycling because the chain has not been maintained, and the shifting is not so smooth. So take more time to maintain the chain regularly.4. Brake maintenanceThis reason is more common, and it is often the most intuitive factor that makes you feel slower cycling.Regardless of whether you use a disc brake or an ordinary V brake, the purpose of brake accessories is to keep the brake pads as close to the disc or rim as possible to ensure the best braking effect. So first check whether the rim is deflected, and then re-adjust it with the fine-tuning screw after confirming that there is no problem.What if you check the tire pressure and confirm that your brakes are not worn out and the chain is oiled, but the legs still can't lift and the bike is still riding slowly?There is only one explanation, and that is your own reason. It may be that your cycling condition was not good at the time, or the cycling posture was wrong, or lack of exercise, etc. So practice it more often, after all, in the adult world, nothing is easy.
When we enjoy the fun of cycling, the abnormal noise from the brakes often breaks this rare tranquility; the braking performance deserves our constant attention!So, why does the brake make abnormal noise?Abnormal brake noise usually has the following four situations:● There is foreign matter on the contact surface of the brake pad and disc.● The newly purchased brake pad is not adjusted to the best position.● Interference between disc and clamp.● Inaccurate installation of the clamp or foreign matter.Let's take a look at the corresponding solutions1. To make foreign matter on the contact surface of the brake pad and discThe abnormal brake noise may be caused by the brake pads or the brakes being dirty. Be careful when oiling the bicycle. Disc brakes usually need to be removed from the bicycle for cleaning. If the discs become oily, they need to be replaced in time. If there is foreign matter on the disc, please wipe it with alcohol.Please use a cloth or cotton ball dipped in alcohol to wipe the disc2. The newly bought brake pad is not adjusted to the best positionThe installation process of the new incoming brake pad must be careful to ensure that it is correct. Improper installation methods and location will greatly affect braking performance. The best way to fix the pad is to ride along the road at low speed and then hold the brake. Repeat this step several times to make sure it is installed in place.A reminder of the replacement brake pad.3. Interference between the disc and the clampWhen braking, the lever will bounce or make a serious abnormal sound. If the disc is slightly bent or even has obvious grooves when observed with the naked eye, it means that the disc has been deformed. It is not advisable to use a wrench or a vise forcibly to calibrate. The uncontrollability of manual force will cause greater damage to the disc. It is recommended that riders go to a professional repair point to replace it.If it is not caused by the deformation of the disc, the position of the clamper needs to be adjusted so that it is in the middle of the frame to ensure the gap between the disc and the disc.One: First half-tighten the two M6*18 screws on the caliper.Two: Press the brake handle until it is locked.Three: Just lock the two M6*18 on the caliper.The reasonable clearance between the caliper and the disc is about 1.7~2.4mm4. The clamp installation is inaccurate or there is foreign matter.Clean the calipers and brake pads at ordinary times, and check whether the bolts are locked in place before cycling. When the brake block fails or is worn due to unevenness, it is also easy to produce abnormal brake noise. In this case, you must clean up the remaining small sand particles, you can use a toothpick or a small stick.Use a small stick to clean the crevices of the brake padWhy is the brake shoe not level? The installation may not be in place. When the brake pad is installed, the friction surface should be parallel to the plane of the rim and placed in the center to avoid rubbing the tire, so that it can touch the rim while pinching the brake.Loosen the nut behind the brake pad appropriately. Don't loosen too much. Pinch the brake lever to make the brake pad press tightly on the rim. After adjusting the position, tighten the nut to fix it. (The adjustment method varies according to the caliper). Check whether the caliper is centered and whether the two caliper arms are symmetrical with respect to the rim plane. Finally, adjust the fine adjustment knob on the brake lever to confirm the brake stroke.Loosen the nut behind the brake padOf course, pay attention to the rim while checking the brake pads. Many aluminum wheels have a machined surface to ensure good braking performance. Therefore, if the rim is covered with a lot of dirt or the rim is worn out, it will affect the braking performance. Clean the rim from time to time.The above content hopes to help you reduce or alleviate the problem of brake noise.
As the cycling team continues to grow, the technical level of riders is also constantly being pulled apart. How to better and quickly integrate into the cycling team has become a problem that plagues novices. There are many people who like cycling, and they all come from different fields and have received different levels of education. Everyone has completely different personalities and habits. Although most riders are very friendly, you still need to pay attention to the following points when getting along： 1.don't ask others to borrow a bike This is a big taboo among cyclists. Everyone's bike is like their own sweetheart. Borrowing a bike is not a problem. The problem is that you accidentally crashed the bike while riding it. Do you think the other party will ask you to pay for it? How much compensation is appropriate? 2.Do not impose your own thoughts on others Everyone has different preferences for bike, just like some people like SRAM and some people like Shimano, the different feel also attracts different fans. This is not only for beginner riders, some riders who have been riding for a period of time also often do this kind of thing. In fact, this is nothing in itself, but some people like to add oil and vinegar, for example, your accessories are more expensive, your matching is unreasonable, Merida is not as good as Giant, etc. What you like and what you think is good does not represent the other party’s thoughts, so not imposing your own thoughts on others is the most basic respect. 3.Only ride a bike but don't care about life Cycling friends first met because of riding a bicycle. When someone rides with you, it doesn’t mean that they will tell you everything about him. Therefore, even if you have a particularly good relationship with a cycling friend, don’t ask others about their lives. Distance produces beauty, which is useful everywhere. 4.Don’t keep thinking about rushing to the front Some riders who have just participated in cycling may not be good at understanding the situation of the cycling team, so they are easy to rush to the front of the team on a whim. But in fact, in cycling, experienced riders are often at the front and rear of the team. For group travel, the allocation of personnel needs to be adjusted according to the situation of the team, not to show individual physical fitness. 5.not bad debts Generally, everyone is on the AA system for going out. Occasionally, I will meet some people who are happier than anyone else when eating, eat more than anyone else, and can always slip away when it is time to pay the bill. 6.follow traffic rules You don’t even care about your own safety, and you may even threaten the safety of others. Who would want to ride with such a rider? Running traffic lights, riding side-by-side, and speeding through crowded roads are all very offensive. 7.Teamwork Every group has its own rules, if you must be a maverick in a group, then I don’t think any club is suitable for you. You can communicate any dissatisfaction, but it is your fault to spread negative energy 8.Learn some basic maintenance and repair methods For daily riding, we need to know some basic bicycle debugging and maintenance methods, such as brake adjustment, bicycle maintenance after rainy days, etc. Only by mastering some skills can we go out to ride with more peace of mind.
Why do professional bicycle riders shave their legs clean? Please don't laugh, because there is neither a specific historical reference nor objective scientific findings that can explain this habit of bicycle riders, so let's make some reasonable guesses.Answer 1: Shaving can form an aerodynamic advantageTheory:In this era of aerodynamics, seamless tights, aerodynamic frames, streamlined helmets, and ultra-light carbon wheels are all flying in the sky. Therefore, it is unreasonable to ignore the small but vital aerodynamic advantage of bare legs.Reality:The actual effect of shaving depends on the amount of hair on your legs. To be reasonable, take a look at the current tights, they really fit, and there are no seams and buttons. So, if all of this works, then too much hair on your legs may have an effect. ——Former professional bicycle rider Levi LeipheimerMaybe it's useful in the top time trial, but in the mountain bike, it is not useful. —— Jeremy Horgan-Kobelski, champion of the U.S. National Mountain Bike ChampionshipIn terms of aerodynamics, the actual effect is not great. But I know that if I look down at my hairy legs while cycling, I feel like I'm going to lose speed in an instant. ——Davis Phinney, Champion of the Tour de FranceAnswer 2: This is more comfortable and convenient during a massageTheory:During the massage, the leg hair will be torn off, a lot. (It hurts to think about it!!!)Reality:That's why I shaved my leg hair. If I didn't do this, I would be very hurt. ——Former professional bicycle rider Levi LeipheimerIf you have too much hair on your legs, you have to use a lot of oil. You don't want to be braised pork feet, do you? ——Tour de France champion Andy HampstenSimply, this is the number one reason why I shaved my leg hair. I can't imagine the pain of a full-body massage for a pair of hairy legs. At the same time, I also think that some good massage techniques do not require too much oil, so shaving is very important. ——Horgan-KobelskiShaving your leg hair may feel better, but from the perspective of deeper muscles, it makes no difference whether you shave or not. I work in the team all year round, and some professional players even shave their leg hair in winter. ——Chris Grauch, Certified Massage TherapistI bet that shaving the leg hair is for easy massage. Do you want to caress your hairy thighs? ——Todd Wells, champion of the U.S. National Highway and Cross Country CompetitionAnswer 3: Care for wounds is simpler and more effectiveTheory:When there is no leg hair, it is easier and faster to clean and bandage the abraded wound. The leg hair will be stained with dirt and bacteria will easily breed. Without leg hair, heal faster.Reality:I always think this is the main reason. When you fall off the bicycle, your skin is easily bruised. The hair on the legs will only get dirty, not conducive to bandaging. ——Davis PhinneyThe absence of leg hair also makes the intramuscular effect stick more firmly, and many riders have been using this recently. ——Horgan-KobelskiAnswer 4: This just looks cool-I can ride fasterTheory:Bodybuilding muscle lines look sharper, and leg hair affects the visual experience.Reality:In people's general concept, smooth legs seem to move faster. Before the TT game, I clean my legs. You can feel the gust of wind hitting your legs. (We are not as powerful as you, I can't feel it)——Chris Horner, RadioShack Team (the predecessor of Trek Team)Answer 5: Women like men with smooth thighs.Theory:In fact, we just want our partners to please us all the time.Reality:When my husband Jeremy (Horgan-Kobelski) no longer rides, I still want him to shave his leg hair. I think it looks too hot with full-leg hair, even though I am also a bicycle rider. Maybe most female compatriots are different from what I thought. ——Heather Irmiger, a professional mountain bike riderAnswer 6: This is a traditionTheory:Shaving your leg hair is an important sign that you are committed to pursuing lofty goals and working hard to manage your life. This means that you are a real racer. Furthermore, going to a team race with unruly hairy legs is like going to church in shorts.Reality:Shaving leg hair is the attitude a bicycle rider should have. ——Horgan-KobelskiTo me, this behavior is stupid. ——Leideville Time Trial Champion Dave WiensThis is a kind of fashion when I ride a bike. It’s also very Fashion now, real friends shave their leg hair. ——Phinney
