Do you need a road bike?1. Road bikes can commute, but they are not good at commuting; road bikes can go for outings, but they are not suitable for outings; road bikes are a nightmare for long distances, road bikes cannot be parked casually, road bikes have too many skills, and road bike adjustments rely on With rich experience…2. Road bike is a piece of sports equipment, road bike sport is a hobby, and road bike hobby is a burden. You will enjoy the burning sensation of the diaphragm instead of the envy of others.This is not an article that encourages you to join the road bike circle. If you have the willpower, have the financial base, have time to exercise, and are interested in road bikes, then consider buying a road bike.What should I pay attention to before purchasing?1. I want to buy a road bike, but what kind of bike is called a road bike?① Reasonable geometric designBecause of the low riding posture on the road, the geometrical settings of the vehicle itself are extremely demanding. Incorrect body geometry and size are very easy to cause personal injury, and in many cases this injury will be considered as a fatigue symptom after exercise, waiting for you to find out, It's too late to regret.② 700c wheel diameter, tire diameter below 30cThe 700c wheel diameter is a follow-up standard, and the tire diameter below 30c can ensure low enough rolling resistance on the paved road.③ Drop handlebarThe purpose of the handlebar design is to ensure that the rider can adopt a low wind resistance posture and allow the rider to perform a variety of postures.④ Bicycle Brake/Shifter GroupsetsThe Bicycle Brake/Shifter Groupsets are a milestone in the development of road bikes. It reduces the rider's movement range when shifting, and does not have to leave the corners of the fingers to avoid accidents caused by operating errors.⑤ Self-locking pedalWithout self-locking fixation, many technical actions cannot be completed-such as rocking a bike and low-position downhill. and it is easy to cause danger in the open environment of the road race. Therefore, it is necessary equipment for road bike sports.2. What size bike should I buy?① For normal people, the simplest correspondence between height and frame is basically certain, and the fine-tuning of the body proportions depend on the seat tube and the stem.② The basic attribute to measure the size of the frame is the equivalent horizontal center to center length and the seat height (Center to Top) length. Among the two, the horizontal top tube is the most direct and important data. Due to the promotion of compression racks, many manufacturers currently do not directly indicate the size of the frame by the length of the horizontal up tube but use the label or the length of the riser to indicate it. When considering the frame, you must query its official website geometric information to obtain the horizontal upper tube data of each size.The following is a reference for height and frame size. Since the top tube settings of various frame levels are different, only the range options are given.<160cm: It is recommended to be the same length first…otherwise you can only choose a special children's road bike.161-165cm: It is recommended to have the same length and height first… Be sure to buy it. The horizontal top tube is 49-51cm.166-170cm: It is recommended to use a frame with a 50.5-52 horizontal up tube, and the maximum length should not exceed 52.5cm171-175cm: It is recommended to use a frame with a 52-53 horizontal up tube, and the maximum length should not exceed 53.5cm176-180cm: It is recommended to use a 53-55.5cm frame, and the maximum size should not exceed 56cm181-185cm: It is recommended to use a frame of 55.5-57.5cm, and the maximum size should not exceed 58cm186-195cm: It is recommended to use a 57.5-59cm frame, and the maximum size should not exceed 59.5cm>195cm: If you can't use a frame of about 59.5-60cm, you probably need to customize a bike… A finished frame with a horizontal top tube exceeding 60cm is very rare.The above is for reference only. The easiest way is to find a suitable place to do a fitting, but the fitting will change with the change of skills and physical conditions. If there is no fitting condition, you need to specifically consider which end your height is in the range. For example, if your height is 181cm, buying a 58cm equivalent frame is obviously prone to problems, but if it is 185cm, buying a 55.5cm frame may not be impossible. In addition, these reference data only need special attention on the first bicycle. When you constantly modify the bicycle settings, you will know what kind of bike geometry you need: large or small frame, layback seatpost or straight seatpost, the angle of the stem, the drop bar, and the reach of the drop handlebar… these experiences are only for individuals.The heights of some well-known cyclists are listed below, and the top tube dimensions of the frame and the equivalent level of the frame are just for viewing:Alexander Vinokourov: 177cm, Tarmac SL4, 537mmLance Armstrong: 178cm, Madone 6, 544mmDavid Zabriskie: 183cm, R5 VWD, 548mmDenis Menchov: 178cm, Aeroad CF, 560mmFabian Cancellara: 186cm, Madone 6, 560mm
For those who are just getting started with a mountain bike, and in order to let everyone better enjoy the fun of cycling, here are some tips about how to use derailleur correctly.After cycling for so long, it is found that most riders do not use the derailleur correctly, which causes unnecessary wear and tear of the chain and derailleur, and causes the performance of the derailleur to decrease after a short period of time! Now I will briefly introduce you to the reasonable use method of gear matching (27-speed mountain bike as an example): 27-speed bicycle has 3 chainrings, and there are nine cassettes behind it. It is generally considered that 3×9=27 so it is referred to as 27-speed The reasonable way to use the derailleur is to use the smallest chainring (1st gear) in the front and 5678 gears behind (as shown in the picture), the middle chainring (2nd gear) in the front, and (2, 3, 4, 5) in the rear. , 6 and 7 gears), the front is hung on the largest chainring (3rd gear), and the back is hung at 123 gears (as shown in the figure, the gears are 1.2.3.4.5.6.7.8.9 from small to large cassette). Will cause unnecessary wear and tear of the derailleur!Pay attention to some problems when using the front largest chainring. Try not to use the largest rear cassette when using the front largest chainring. This way, the use of front and rear shift will maximize the tension of the rear derailleur and the front derailleur, and the chain tilt will be more serious. Such use will shorten the life of the chain and the life of the derailleur, and the accuracy will also be reduced! There is also the smallest chainring and smallest cassette as much as possible because when this gear is matched, the twist of the chain is also relatively high. Not only is the chain tilted more severely, but the chain is also the loosest in this gear, and it is easy to bump Chain fight! So try to avoid using the largest chainring with the largest sprocket, and the smallest chainring with the smallest sprocket! !! When using the largest chainring, the cassette is generally used with 1, 2, 3, and gears. When using the middle plate, the cassette can be used with gears 2, 3, 4, 5, 6, and 7. When using the small disc, the cassette can be used with gears 5, 6, 7, 8, and 9. Using the derailleur in this way can greatly extend the life of the derailleur and its stable performance!When riding on an ordinary asphalt road, the front chainring (operated by the left finger) is fixed in the middle (or the largest chainring (first gear)). The rear chainring (operated by the right finger) is easier to understand. The smallest front chainring is only used when going uphill. How to choose the gear ratio of the rear chainring? This is determined by the number of pedaling rotations (the number of rotations of the front chainring (center shaft) in 1 minute). So how much rotation is more suitable? It varies according to foot strength, technique, and heart and lung function. Generally, 70～80rpm is more suitable.Note 1: The choice of speed change should be based on your own situation. For example, the middle chainring of the front gear is often used, or the largest chainring is often used. If the physical strength and foot strength are 30km/h, maybe outer is suitable? When the physical strength and foot strength are 20km/h, maybe the middle chainring is suitable? Within the range of compensation through the rear shift, choose the shift that suits you, and choose the speed and cadence that suits you.Note 2: 70～80rpm is the general standard, some people are more suitable for 70rpm, and some people rotate more than 90rpm. The important thing is not to increase the torque to the pedal but to rotate smoothly and briskly. Don't hurt your knees, and don't get too tired of your muscles. Use muscles as much as possible, and pedaling with efficiency and less fatigued is a good pedaling method.Pay attention to us, we will post more tips about riding.
If you want to buy a new bicycle, there are many factors that affect your choices, such as price, features, riding style, brand factors, and even painting.Sometimes the choice boils down to the choice of frame material. There are four common frame materials: steel, aluminum, titanium, and carbon fiber. Materials can affect riding and usage, so you need to know the key differences between different materials.Everything you need to know before buying a new bike. For many people, material selection is as important as accessories and prices, and different materials are suitable for different types of cycling. The frame will be the core of the new car, taking up the main budget, you need to choose wisely.The following analyzes the key characteristics of each material to help you make the right choice.1. AluminumAluminum is the most common material for road bikes, offering a more affordable price. It is also an ideal material for the frame, which can make rigid and lightweight frames. The aluminum frame has been treated unfairly for a long time, such as the cycling feels rough and uncomfortable.WHY BUY ONE: Within your budget, you want a light and hard frame for competition, or you want the best bike at the same price.2. SteelMany years ago, steel was the only frame material. Nowadays, steel frames still exist, which can provide smooth cycling, which is why touring bikes still prefer to use them. But steel will not be used in large-scale manufacturers now. In fact, it is easy to process, so it is often used by manual custom manufacturers. If you want to customize, steel is a good choice.WHY BUY ONE: If you don’t care about its weight, want a custom frame, and you like the smooth cycling quality3. TitaniumTitanium is a very satisfying material. It is comfortable and has a certain shock absorption capacity. At the same time, it is lighter than steel, stronger than aluminum, and will not rust. In fact, its surface can maintain gloss for a long time. But after so many years, titanium frames are still very expensive.Titanium can make high-performance racing bicycles, but can also be designed for long-distance cycling, providing very good comfort.Most titanium uses 3AL-2.5V (representing 3% aluminum and 2.5% vanadium) and 6AL-4V, which is the hardest grade of titanium and can be seen on many expensive frames. Because of its hardness, it is difficult to process 6AL-4V into seamless tubes. For example, rear derailleur hangers and head tubes are often cut.WHY BUY ONE: You want a long-life bike that is light and has smooth cycling.4. Carbon FiberFor many riders, they will not choose other materials except carbon fiber, which is the mainstream in the cycling racing world. Among these four materials, carbon fiber is the lightest and hardest, and it is also very expensive. However, the price of carbon fiber frames has dropped significantly in recent years.Carbon fiber is a very flexible material, giving designers a lot of room to play, and the shape of the tube is not restricted, for example, it can make an aero road bike.Carbon bike frames are completely different. There is a huge difference between cheap and expensive carbon frames. Different carbon fiber materials, different processing methods, and different factories will all have a big impact. Carbon fiber is relatively easy to design and control, allowing the frame to achieve a balance between various characteristics, even lightweight, comfortable, and rigidity.WHY BUY ONE: If you want the lightest and hardest road bike, or the aero bike, you have enough money to buy it.
