Bicycle wheel diameter
The diameter of a bicycle wheel is one of the most important characteristics. It should be understood that the diameter of the wheel is a double concept, that is, you can mean two different values - the diameter of the rim and the diameter of the bicycle tire. That is, the total diameter of the wheel depends on the height of the tire.
Consider the numbers in the table of correspondence of the rim diameter to the tire diameter:
Bike type where this size applies
Teenage, Soviet old-style, for freeride and other extreme types of cycling
Thus, it can be concluded that wheels with the same rim size (622 mm) may have different wheel diameters (27, 28 and 29 inches). And it depends on the height of the tire. In turn, the size of the tire height differs quite significantly between different bicycles (64 mm, 89 mm and 115 mm).
Influence of the wheel diameter on the speed qualities of the bicycle
If we consider this issue from the point of view of physics, then, in fact, the larger the size of the wheel, the longer the distance can be covered in one rotation. The linear velocity is equal to the product of the angular velocity and the radius of the wheel. Consequently, a directly proportional dependence of the speed of movement on the size of the wheel is visible. However, the application of muscle strength will require more.
Conclusion: to accelerate, you need to spend more time and energy, but the speed will be higher. Therefore, in order to achieve increased speed performance on large wheels, it is worth seriously thinking about the physical capabilities of an amateur cyclist. That is, there are 2 options to choose from: pump up strength and endurance, or choose a bike with slightly smaller wheels.
Polish cyclists conducted an experiment to compare the speed performance of mountain bikes with wheel sizes of 29 and 26 inches. The track was laid over rough terrain with climbs, stones, sand. As a result, bikes with 29-inch wheels were 13 seconds worse in speed. And as a result of the sprint competition, the result was almost the same.
Bottom Line: For rides on a good road with occasional stops, it is more convenient to use a bicycle with wheels with a diameter of 29 inches. And for mountain hikes with frequent stops. with size 26.
The dependence of the cross-country ability of the bicycle on the size of the wheel
It is worth noting that, first of all, the cross-country ability (the ability to drive off-road) is influenced by the profile and width of the tire (it must be at least 2 inches). The deep, sculpted profile facilitates the bike’s ride over any rough terrain. 26 “wheels are more maneuverable on rocks, sand, etc. than 29” wheels. In addition, it takes less effort to get the bike moving when stopping on difficult terrain.
Conclusion: before choosing a bike, you need to think carefully. for what purposes it will be used. And only after that you can start choosing a specific type of bike, wheel diameter and profile. You should not immediately stop your choice on expensive top-end bicycles. then it will be easier to replace it when you determine the priority type of riding and improve your personal skills.
Are 27.5 Wheels Really Better Than 26
Let’s be honest. for decades, the size 26 ″ has suited millions of cyclists, remember yourself. have you ever wondered if a mountain bike had to be any different? The difference between these two sizes is on the verge of feeling and faith, on the one hand, the 27.5 ″ wheels are slightly heavier, but on the other hand, they should roll a little better off-road. To argue that one of these two standards is clearly better than the other is from the evil one.
If the differences between 26 ″ and 29er are on the surface, the pros and cons are visible to the naked eye, then with regard to question 26vs27.5, I would recommend readers to stock up on healthy skepticism.
However, on the other side of the scale is the axiom that a larger wheel size is almost always a good thing, and a new size is just the middle ground between small and large diameters. The 27.5 ″ is suitable for all riders, tall or short, plus a slightly better roll rate compared to the 26 ″. Marketing by marketing, but the main thing is that it is still a step forward, not backward.
So far, my opinion is: the new standard is the normal development of modern bicycle marketing, creative research. I love everything new.
So which bike to choose. 26 or 27.5
First, a tip for practical people: if you need a bike to ride. close your eyes to the diameter of the wheels, and choose solely on the basis of the price / equipment ratio. You should care what kind of mechanics you get for your money.
We must accept that the new standard is not a momentary marketing ploy that will soon be replaced by something else. I think that 27.5 ″ is serious and for a long time, therefore, if the question of money is not too acute, choose this size, simply because it is the present and the future.
Does it make sense to buy a bicycle with 26 ″ wheels today?
An important question on the agenda is whether the 26-inch size will disappear completely in the near future, and is it worth buying a mountain bike with such wheels now. In 2019, the question is even different. where to find a decent bike with 26 wheels?
Experienced cyclists remember how slowly and gradually the niners gained popularity: at first the need for hybrids ripened, then the first clumsy 29ers began to appear on their basis, and only at the end of this evolution the bicycle world began to massively switch to a new wheel standard.
But with 27.5 ″ wheels, marketing made a very rapid revolution, in just a few years many bicycle brands decided to transfer their lineup to this size.
Sometimes people say. if I buy a bike with 26 ″ wheels now, then most likely I will not be able to upgrade it in a few years, because manufacturers will stop producing components for this size.
For example, although the 1 1/8 ″ heading standard has long been completely squeezed out by the new standard, there are still plenty of forks with the old head diameter, so there will be enough 26 ″ wheels and forks for your life.
It is clear that the assortment will dry up from year to year, but it is unlikely that a person, having in his hands, in general, an outdated bicycle, will think about a top-end fetishistic configuration.
Therefore, if you are now in the selection process, and cannot decide on the diameter of the wheels, then the complexity of subsequent upgrades is the last thing that you should worry about.
Will the size 26 ″ disappear altogether
In fact, it is already gone, try to find 26 in the range of leading bike manufacturers. A few years ago I thought that marketing would spread these standards across different niches: 26 would remain in the hobby class for beginners, and 27.5 would become a type of sport. But it is clear that the industry has decided to completely bury the good old standard.
Perhaps some brands aimed at the mass market will not stop producing 26 ″, they will simply be equipped with entry-level equipment for the very beginning cyclists.
These are my thoughts about the near future size of mountain bike wheels, it would be interesting to know what my dear readers think about this.
What do you think is the fate of 26 inches? Are you going to switch to this standard when you buy your next bike??
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How to choose a bike
A bicycle is not only an affordable means of transportation that helps to keep oneself in shape, for some it is a hobby and a way to travel, while others cannot imagine their life without it. The bike does not need refueling and expensive maintenance, it allows you to bypass traffic jams and not suffer in search of a parking space, and you can ride it not only on asphalt city roads. Read about which bike is better to choose for yourself and what you should pay attention to in our article.
Which type of bike to choose?
The following main types of bicycles are conventionally distinguished:
- city or road;
- stunt or BMX;
- mountain or MTB.
Also, sometimes subtypes or intermediate varieties are distinguished: cruiser, tourist, hybrid, etc.
To choose the type of bike, you need to decide where and how you are going to ride it. This will allow you not only to find the optimal model, but also to save money when buying.
A city bike (aka road bike) is designed to move around the city, its main advantages are comfort and practicality. The handlebars are positioned above the saddle and are height adjustable, so the driver’s seating position is straight (like on a chair). The saddle is wide and soft. Half of the models have a low arcuate frame for comfortable sitting and rolling in casual wear, including skirts and dresses.
The cruiser can be classified as a subclass of city bikes.
There are no significant differences from the city, except for the appearance. the design of the motorcycle was taken as a basis. The special shape of the frame, the sweeping curved handlebar, and the necessarily wide and comfortable saddle stand out. Often, the main argument in favor of choosing a cruiser is the appearance. This bike is best suited for walking.
Buyer’s guide to road bike wheels. Different types of wheels | Cycling Weekly
Road bikes are designed for cycling, since the entire structure of such a bike is designed for high-speed riding on a flat asphalt surface.
Ram-shaped handlebars provide long-distance grip options and extended seating (body parallel to frame for improved aerodynamics), super slim and lightweight frame, 28-inch wheel diameter, narrow, smooth high-pressure tires, no shock absorption.
The mountain bike or mountain bike (MTB) is currently the most popular type, largely due to its versatility. Originally designed for off-road driving, but in the city it is no less convenient, especially if you ride not only on flat roads.
It is more difficult to gain high speed on MTB, in comparison with tourist and road, but its wide tires allow you to drive on asphalt, dirt road, grass, stones, sand, etc. over, the presence of one or, especially, two shock absorbers significantly increases the comfort of driving on rough road. Thanks to the gear shifting system on the mountain bike, you can drive up steep inclines without using extra effort, and the durable frame reduces the likelihood of serious damage to the bike in case of an accidental fall.
Touring bicycles were created by tourists for tourists, so their purpose is to travel long distances with oversized luggage. The choice of characteristics depends on where and how loaded you are going to travel, and also, what is more important: speed, maneuverability or the level of comfort of cargo transportation. If you plan to travel for a long time with an oversized load on a flat road, then it is better to choose a classic tourist. a frame with an extended wheelbase and extended rear stays. When the rear wheel is far enough away, it is convenient to secure the luggage and it does not interfere with pedaling, the shaking on the obstacles is not so noticeable, and the muscles are less tired during a long trip. The lowered center of gravity improves handling when driving with a load. The disadvantages of this design are loss of maneuverability and slow cornering.
If you are going to travel on mountainous and rugged terrain, then it makes sense to consider models more similar to mountain ones or adapt a mountain bike accordingly. When the wheels are closer to each other and the front fork is tilted, the handling will be better, but it may not be so convenient to transport the oversized load (with shorter stays, it will be more difficult to secure and easier to touch with your foot). By placing the saddle closer to the pedals, you can accelerate faster and take up climbs more easily, but it will put more stress on the muscles during long rides.
The most common is a straight bicycle handlebar, but it can also be in the shape of a ram’s horn. The latter allows you to change the grip and position, thanks to this you can ride for a long time at high speed and less tire your arms and back. Wheel size is more of a matter of taste, but a bike with a smaller diameter is more compact and easier to transport. When choosing a braking system, you need to understand that braking with a load requires more effort, the most reliable option is a hydraulic disc. Tourists have a lot of gears, including for climbing and accelerating in a straight line, double or reinforced wheel rims and many additional elements that are useful on the road (front racks, flashlights, bottle cages, etc.).
A hybrid bike is an intermediate option between mountain and city. Most often this type is referred to MTB with a lightweight frame and tires of reduced thickness.
The set may include fenders, trunks and other accessories typical for road bikes. This is the best option if you ride not only on bike paths and flat asphalt, but also on the rugged terrain of parks, often overcome curbs and similar irregularities, or drive on roads whose quality leaves much to be desired. Hybrids usually have a single front shock. Sand or dirt will be more difficult to overcome. At the same time, it will not be difficult for a hybrid to climb the hill. its number of gears is not inferior to a mountain bike.
A stunt bike or BMX is purchased by those who need not a vehicle, but a sports accessory for extreme riding. Typical features in this class: low, heavy-duty alloy frame, seat well below the handlebars, wide rims and tires, only one speed.
There are no shock absorbers in these bicycles (the pros prefer to get rid of them altogether), and the hand brake allows you to block only one wheel. They ride BMX, as a rule, only within specially equipped areas or in places where the terrain is conducive to performing jumps and other tricks.
All other types of bicycles are modified versions of the basic types. Usually they are highly specialized or imply the presence of certain skills. For example, Downhill is a type of mountain bike for downhill skiing, and a dirt bike is a variation of a stunt bike for professionals.
How to choose bicycle tires
Using unsuitable bike tires can significantly impair the performance of your bike. But a good choice of rubber can make the bike just take off.
The wheels of regular bicycles for adults come in diameters of 26, 27.5, 28 and 29 inches. Folding urban and some extreme models can be equipped with 20 or 24 inch wheels. The tire diameter is always written on the tire. For example, 26×2.1 means 26 inches in diameter and 2.1 inches thick. Note: 28 and 29 ” tires require the same 28 ” rim, but 26 and 27.5 require 26 and 27.5 ” rims, respectively. On road bikes, the wheel diameter is indicated as 700 or 700s. These are the same 28 inches, only in millimeters.
The thicker the tire, the better it softens bumps and adheres better to the surface, but also the greater its weight and the more difficult the bike rides on good asphalt due to the increased area of adhesion to the surface. That is, for speed, they choose a tire that is narrower, and for cross-country ability or comfort, a wider one.
The width of the tire also depends on the bike frame. Road bikes are fitted with tires up to 32mm thick and mountain bikes up to 2.3 inches. The same tire model can be produced in different thicknesses. If your bike is not a pure asphalt bike, then do not take the rubber close to the frame. Leave a gap for dirt on mountain and cyclocross or fenders on city bikes.
Slick, or completely smooth rubber, is only used for driving on smooth asphalt. Typical Representatives: Schwalbe Kojak, Rubena Cobra and Michelin Wild Run.
Semi-slick are quite versatile tires that allow you to ride on uncomplicated terrain. Soft types of rubber, from which semi-slick are made, quickly grind on the asphalt. Typical Representatives: Continental Speed King 2 Race and Schwalbe Sammy Slick.
The use of road rubber is asphalt. It is tougher and therefore wears out longer. Usually has some puncture protection. Typicals: Continental Town Ride, Schwalbe Land Cruiser and the most popular Schwalbe Marathon series.
Rubber with a developed tread (in everyday life. evil rubber) behaves well in mud, sand, snow, but they ride on the asphalt very badly and, moreover, make a lot of noise. Typical representatives: Continental Mud King and Michelin Country AT. A compromise option is the alignment of the tread teeth, forming a semblance of a central track. Such rubber is good both in mud and on asphalt. Typical Representatives: Schwalbe Smart Sam and Schwalbe Black Jack.
Balloon bike tires are tires that can function at low pressure, which makes them surprisingly comfortable. They are used for city driving or for tourism, since the tread of such tires does not have developed lugs. Typical Representative: Schwalbe Big Apple.
Tubeless tires have anti-puncture properties. Typically used in cycling because they require special rims or special seating bands and sealant. They are expensive, and in the event of a puncture, they are extremely difficult to glue and change. Studded tires are used for driving on ice. Ordinary rolled snow and snow-covered urban asphalt do not require special tires, therefore studs are used only in races or in regions where ice is very frequent. A set of studded tires costs like a budget bike. A typical representative is Schwalbe Ice Spiker. Solid tires are very poorly distributed in our market. They are difficult to place, but they do not break through.
Often, the same tire model is available in two versions. regular, with steel cord (a mesh of steel wire or Kevlar threads that makes up the tire carcass), or folding (folding) with Kevlar cord. Folding is more expensive and easier.
TPI (Threads Per Inch) is the density of the cords in the tire. Less dense cords (from 30 to 60 TPI) make tires softer and lighter, denser (90. 150 TPI) are used in more wear-resistant, hard tires.
Compound is a term for the composition of rubber. Engineers can mix two or three different rubber grades into a single tire (dual and triple compound, respectively), which allows for optimal cornering grip with good roll-off on the center track. Each manufacturer has its own formula and compound technology.
Weight is an extremely important characteristic of a tire, because the wheels are constantly spun by the cyclist, and the easier it is to do this, the less effort is spent on it. But the lighter the tires, the more expensive they are and, as a rule, the easier it is to break through. The higher the anti-puncture properties, the more difficult it is to puncture the tire. Tires of the highest grades are not punctured even with pushpins. Simple tires in the conditions of Ukrainian littered roadsides can be punctured quite often. However, you have to pay for anti-puncture with weight. Good anti-puncture tires weigh 2 kg per set. Truly, such tires are needed only in some areas where thorns grow, and for trucker cyclists.
Reflective elements are often used on modern rubber to increase the range of visibility at night. Most often this is a side strip, but there is also an inscription itself. the name of the rubber. These tires are marked with the letters R, RT or Reflex.
Fatbike and cruiser bikes can have thicker tires. Wider tires are inflated with less pressure than narrow ones, which means that the wider the tire, the more comfortable and passable it is, but it rolls harder and worse on smooth asphalt.
The design and parameters of the tires used
As is the case with car tires, bicycle tires are divided into many conditional classes, differing from each other in the softness of the rubber used, the profile height, type and pattern of the tread. Pay attention to the parameters of the tire. They are designated by two numbers, going through a dash or a fraction sign, the first of which indicates the width, the second. the landing diameter.
Bicycle wheel selection options. What to pay special attention to?
When choosing an alternative to the wheels mounted on your bike, the following features must be taken into account:
The method of attaching the spokes to the rim
Direct attachment of the spoke to the aluminum rim. This method has a significant drawback. cracks appear quite quickly at the point of attachment of the spoke, which can lead to chipping of the spoke.
Fastening with caps. special steel inserts in the rim, to which the spoke is attached. Such a design significantly increases the overall strength, and also leads to an increase in the price of the wheel, and therefore it is quite rare on budget bikes.
Rim profile design
an important parameter that directly affects the reliability of the wheel and its resistance to mechanical stress.
- The oldest and least perfect is the single wall rim design. Such wheels can be found in old Soviet bicycles made by MMVZ, as well as in modern cheap Chinese bikes. They are suitable, perhaps, for a sedate driving around the city without any sharp and dynamic loads.
- The double-walled design is considered more advanced; it can be found in most modern bicycle models. Decent strength and ability to withstand mechanical stress, coupled with a low price. these are its main advantages.
- The three-walled profile design is typical only for MTBs of the upper price range. The functional features of such rims are maximum, however, the price is far from being budgetary;
Which wheels to choose? Top manufacturers
Budget bikes and mid-range models are very often equipped with inexpensive wheels, the functionality of which leaves much to be desired. And the first thing that comes to mind is to replace them with a better and more functional analogue. As a rule, the choice is made from products of well-known manufacturers, whose name is on everyone’s lips:
Number of spokes
A parameter that directly affects the reliability of the wheel, the ability to operate it in extreme conditions, as well as how much weight the rider is able to withstand the bike. The more their number, the more the bike is suitable for the more severe operating conditions. For example, mountain bikes are almost always equipped with 32-spoke wheels, road bikes. 28. The material from which the spokes are made also plays an important role. Preference should be given to steel or titanium spokes, they provide maximum reliability and rigidity of the entire structure, allowing the manufacturer to reduce the total number of spokes without sacrificing reliability and functionality.
How to choose bicycle wheels
Wheels play an important role in the design of a modern bicycle. It is their type that determines the roll of the bike and its capabilities in certain conditions, the maximum speed and braking efficiency, as well as many other features.
Tire. It is a resilient rubber shell that fits over the rim of a bicycle wheel. In its structure, it has a metal or polymer cord, which is its frame. The tire absorbs vibrations and vibrations caused by imperfect road surfaces. Tires vary in size, tread pattern and composition. There are also tubeless tires. in tires of this type, air is held directly by the tire itself, hermetically pressed against the rim.
You need to carefully choose a tire for your riding style. Off-road, a poorly fitted tire can lead to falls (due to poor grip), and on the road it can cause discomfort (from unnecessary vibrations).
How to choose wheels for a bike
city and hybrid bikes
Wheel diameters 26 and 28 inches. Many folding bicycles have 20-inch wheels. City bicycles usually use slick tires. These tires are almost completely smooth. The tread pattern has small grooves that allow water and dirt to drain off quickly and efficiently.
For driving on soft soil, choose wider tires with large lugs. mud. Generally, the stronger the tread, the better the grip of the wheel, but the higher the rolling resistance. There is an intermediate option. the so-called half-slick. On them, the lugs are located only at the edges of the tire, so that when driving on an even hard surface, they do not touch the road.
Road bikes. 27-inch wheels. For road bikes, narrow high-pressure tires (18-27 mm) are used. The working pressure of road bike tires is usually between 6 and 9 atm. On road bicycles, single tubes (tubes, bicycle tubes) can be installed, in which the tube and tire are a single unit. Due to this, bicycle tubes are somewhat lighter than classic tires, but they are impossible (or very difficult) to repair when punctured and inconvenient to mount in the field (such tubes are glued to the rim).
For children’s bicycles, tires differ in exactly the same way as for adults. The main thing is to choose the right size. Typically, children’s bike tires are 8 to 20 inches in size. Teenage bikes have 24 ” wheels
Mountain bikes have traditionally been fitted with 26 “tires, but recently a new standard of 27.5 has appeared. XC and all mountain bikes have tires ranging from 1.8” to 2.4 “. But downhill and freeride bikes are equipped with tires from 2.5 “up to 3.0”.
When buying mountain bike tires, pay attention to the tread. it is different for the front and rear wheels. The front tire protector provides lateral stability when cornering. The rear tire tread is designed for optimal power transfer and rear wheel control. Install tires on the wheel taking into account the direction of rotation. The direction of rotation can be determined by the arrow on the side wall of the tire, which indicates the correct direction of rotation.
Freeride requires tires that hold well on steep slopes, rocky trails that can withstand hours of jumping in mountain bike parks. A tread with an aggressive pattern and high studs is required. Soft, tacky rubber compound provides excellent traction on all terrain, helps with cornering, but it wears out quickly, which increases tire costs.
The main distinguishing feature of each BMX and freestyle bike tire is increased rigidity, which avoids damage to the wheel chamber when performing jumps and other elements associated with increased stress. In addition, the tread of such tires, as a rule, is performed with an approach to the sidewall of the tire in order to maintain stability and traction at a large lateral inclination of the wheel.
How to choose a wheel for a bike
The wheel of a bicycle is its most important part, which has a huge impact on characteristics such as weight, acceleration, speed, maneuverability, cross-country ability, traction, etc. Therefore, the selection of this essential cycling element must be taken with the utmost seriousness and care. This article is for beginner cyclists to help them choose the right wheels.
When choosing a wheel, you need to pay attention to its size, weight and strength. If everything is clear with weight and strength, the lighter and stronger the better, then the size is not so simple. It cannot be said unequivocally that one size or another is better than another for all cases. Therefore, when choosing a size, a beginner cyclist may be confused, but there is nothing difficult here either, this parameter depends on the cyclist’s height and the scope of the bicycle. Also, do not forget about the compatibility of the wheel size with the fork and frame is great.
We will talk more about the choice of wheel sizes in the third chapter, and now we will focus on weight and strength. It is clear that the lighter and stronger the wheel, the better, but what does it depend on? Weight and strength depend on the shape of the profile and the material of the rim, as well as the thickness of the spokes and the quality of the tires.
Construction, profile shape of rims.
All bicycle rims for bead tires are standard box-section construction with multiple stiffeners and U-shaped beads.
The strength and reliability of the box structure largely depends on its multi-wall structure. The U-shaped section of the rim can be:
How To Choose And Fit New Wheels | Mountain Bike Maintenance
- without bridges. single-walled (single) rim;
- with 1 jumper. double-walled (double) rim;
- with 2 bars. three-walled (triple) rim.
The more jumpers, the higher the structural strength, this is a big plus! But the weight, as well as the cost, increases. these are disadvantages. Therefore, the best option for hobbyists is a double rim.!
Today, most normal branded amateur bikes are equipped with double rims, they are stronger than single rims, usually lighter than them and are compatible with any type of brake. High strength is provided by the second baffle, and lower weight is due to the use of aluminum alloys, in contrast to single ones, where heavy steel is used.
Triple. the most durable, but also the most difficult modifications that are rare.
Tubeless rims are manufactured using UST (Universal System Tubeless) or BST (Bead Socket Technology) technology.
Profile height and width also affect strength. The higher the profile, the better its folding strength and resistance to frontal impacts, the wider it is, the higher the torsional rigidity. The high profile suffers less from driving over pits and bumps, therefore it is recommended for those who drive on bad roads and light off-road hardtails.
For lovers of tricks and jumps and those who like to drive off-road, it is better to choose a profile of great height and width, since in these cases there are enough blows from all sides.
The following materials are used in the manufacture of rims:
- aluminum alloys;
- chrome-molybdenum steel;
For most novice amateurs, aluminum models can be recommended. They are lighter, and sometimes even stronger than ordinary steel, due to the special shape of the profile and heat treatment. over, they are more expensive than conventional steel.
Steel has been manufactured for decades. They are quite durable and cheap, it is easier to fix the figure eight set when hitting the curb. The disadvantages are heavy weight and susceptibility to corrosion. Good option for budget single speed bikes with drum coaster brakes, but not V-brake compatible.
The addition of chromium and molybdenum to steel significantly improves its strength characteristics, therefore heat-treated chromium-molybdenum models are appreciated among fans of extreme stunts and jumps, as well as those who drive on the highway, off-road or descend at high speed from a mountain slope. Great option for BMX, full-suspension bike or gravelbike.
Carbon fiber modifications are ideal for riders. Very lightweight and durable material, which is very expensive, so many hobbyists cannot afford it.
The most important wheel geometries are:
- external diameter;
- rim and tire width.
The unit of measurement is most often inches. Sometimes there are millimeter markings, this usually applies to road, hybrid, and sometimes city models. Most common diameters: 20 “, 24”, 26 “, 27”, 27.5”, 28 ″ and 29 ″.
The marking is indicated on the side of the tire, the inscription 26×1.75 means that the wheel diameter is 26 inches, width is 1.75 inches.
When choosing a rim and tire, you need to pay attention to the rim fit and tire diameter. The rim diameter is 406, 507, 559, 584 and 622 millimeters. over, the size of 622 mm is designed for 27 ″, 28 ″ and 29 ″ tires at the same time. In this case, a larger wheel diameter is obtained due to the higher tire height.
To avoid confusion with the dimensions, below we give a plate in which we indicate the marking universal ISO dimensions for various types of bikes.
Which bike wheels are better?
It is our unanimous belief that wheel size depends only on the riding style and the needs of a particular cyclist. If you roll hard in the city, on curbs, steps and often do not notice pits and do not drive very long distances, then even if your height is under two meters, 26 wheels will be in priority, as it may not sound archaic, but the torsional rigidity of the twenty-sixth is significant surpasses other sizes. If, on the contrary, you are not tall, but love speed, long distances and do not know what bunny hop is, then, oddly enough, 27 or 29 wheels, with the right frame size, are more suitable for you. If you have no experience of riding, or if you had one, but for a long time, do not be lazy to rent different bicycles alternately. Preferably, one level of attachment and appreciate the benefits of each for you personally. This will save you money and time, because the wrong wheel size can completely discourage the desire to roll. In other words, there are no obvious reasons, except for the external harmony of the proportionality of the wheels to the height of a person. The stereotypes are strong and often the beginner does not yet know how he will skate, and then the choice, of course, slips into the banal. this bike is perfect for you in size, and at twenty-sixth, you are like a bear in a circus.
When talking about the technical advantages of certain sizes, it is extremely important not to forget about the weight of the bike. All tests and colorful arguments from manufacturers are silent about the weight of test specimens or simply do not make Accent on this. But if the niner has cheap and heavy wheels, then all of its advantage comes to naught. The 29er will compete and beat the 27th and 26th wheels when its weight is comparable to the weight of a bicycle on 27 wheels.
Another striking criterion that speaks in favor of large wheels. grip spot. In 26 it is about 6 cm, in 27.5 it is about 8 cm, and in 29 it is 9 cm. And these data speak not in favor of 29ers. With more weight, a difference of just a centimeter shows that 27.5 is much more interesting than the other two options. All of the above must also be multiplied by the dimensions of the bicycles. The steering and overall handling of the bike strongly depends on this. For the vast majority of cyclists, a compromise is important for the bike to be the most versatile and in this segment the 27.5 clearly holds the lead.
Let’s try to summarize everything now in two sentences! The larger the wheel diameter, the more difficult the initial acceleration is, but it will be easier to maintain energy over long periods. As a result, we get an excellent roll-forward when driving long distances. Smaller wheel diameter. easier acceleration, harder to maintain roll, but stiffer wheels and better bike handling in difficult terrain. Therefore, when choosing a bike before buying, try to figure out what you need.!
How to choose the size of the bike frame for height?
|12||125. 140||thirty||XXS (XXSmall)||Super-small|
|13||130. 150||33||XS (XSmall)||Very small|
|fourteen||135. 155||35||XS (Small)||Very small|
|fifteen||140. 160||38||S (Small)||Small|
|sixteen||150. 165||40||S (Small)||Small|
|17||155. 175||43||M (Medium)||Middle|
|eighteen||160. 180||45||M (Medium)||Middle|
|nineteen||165. 182||48||L (Large)||Large|
|twenty||170. 185||fifty||L (Large)||Large|
|21||180. 190||53||XL (ExtraLarge)||Very big|
|22||185. 195||55||XL (ExtraLarge)||Very big|
|23||190. 200||58||XXL (XXLarge)||Super-large|
|24||195. 210||61||XXL (XXLarge)||Super-large|
The size of the frame in terms of height must be selected from the size of the wheel: the larger the wheel, the smaller the size. The popular Stealth Navigator 500 series bike is available with three wheel diameters and 3-4 frame sizes. Let’s look at the height of 175-180 cm which frame is suitable for growth (table).
|Wheel size||Frame size|
Structural parts of the frame
The choice of bike depends on several factors. First, decide on the type of bike: mountain, highway, hybrid or kids. Having made a choice, we understand the design and dimensions of the frame, which is measured in inches.
The bike’s behavior is influenced by the geometry of the frame. The main elements that determine the reaction of the frame to external influences:
- Top tube length (A) is the distance between the centers of the headset and seatpost. Long top tube gives stability and less maneuverability to the bike.
- Steering angle (M). The angle between the steering column and a line parallel to the ground. Large angle (close to vertical) provides bike maneuverability.
- Seat Angle (L). The angle between the seat tube and a line parallel to the ground. At low angles (large backward tilt of the tube) the rider’s weight shifts backward. providing traction, at more vertical angles the rider’s weight shifts forward, providing a better fit for power pedaling.
- Wheelbase is the distance between the front and rear axles of the wheels. Longer base gives the bike more stability and less maneuverability.
- The length of the rear stays is the distance between the carriage and the axis of the rear hub. Smaller rear frame stays provide better rear wheel traction and more agility. Usually the length of the rear stays is as short as possible to increase the rigidity and strength of the frame.
- Carriage height (clearance, ground clearance). the distance between the bike carriage and the soil surface. Increasing clearance. decreases the stability of the bike, but increases flotation and vice versa. Road bikes have a lower bottom bracket than mountain bikes.
- Stem length. the distance from the center of the steering column to the rudder; influences the maneuverability of the bike and the riding position of the cyclist.
Cyclist size charts: understanding the question
To begin with, different manufacturers indicate frame sizes in different units of measurement. These can be inches, centimeters, or conventional units. In the tables below, we have compared all possible values with a person’s height, so that you can easily choose the right bike size just for your height.
Choosing a bike is more difficult than many people think. If you are a beginner, the information in this article will definitely help you make the right choice and enjoy riding your own bike to the fullest. In many cases, you can also trust the experience of sales consultants, if they are truly professionals in their field.
Use the information received and do not forget that the ride should first of all be comfortable and safe! The suggested tips will help you choose the bike that suits you best, which will become your reliable companion on your travels, measured cycling or just commuting to work in the morning.
How to choose a bike by height and weight?
To choose a bike based on height and weight (depending on body type and physical condition), find the ratio of wheel size, frame and weight in the table. With a lot of weight, it will be difficult to move on the mountain geometry of the frame (a large forward tilt with the transfer of weight to the handlebars). Choose from rugged road or city models with a rigid front fork. Better is a large, spring-loaded saddle and an upright fit. With a weight over 140-150 kg, reinforced (with an increased number of spokes) road and touring bikes will come in handy. We will help with individual selection of the model!
Are Wheels The Best Upgrade You Can Make To Your Bike?
The inner side of the legs and why it really matters
Yes, the main parameter in the choice is your height. However, in order to accurately select the correct frame size, you also need to make the correct measurements on the inside of the legs. To do this yourself, you need to stand with your back against the wall without shoes, only in your underwear. The knees should not bend, and the pelvis and heels should be in contact with the wall. In order to take a measurement, you can use a building level or tape measure. The easiest way is to make a mark on the wall surface and measure the height strictly perpendicular to the floor. This will be the height of the inside of your legs. If there is such a possibility, then it is better to measure it initially in inches. This will greatly simplify the choice and protect you from having to recalculate units of measurement at the time of purchase.
Once you know the inside length, calculating the required frame size becomes much easier and more accurate. But please note that you will have to make a miscalculation yourself, and for each category of bicycles the formula is partially different.
- Bicycles of the double suspension category. To calculate your internal leg length, you need to multiply by 0.225. That is, if the legs are 80 centimeters long, calculate as follows: 80 x 0.225 = 18 inches. In this case, you can select a frame size of 17 inches for a sporty riding style, and 19 for a touring style.
- When choosing MTB bicycles and hardtails, the coefficient by which the length of the legs is multiplied is 0.226.
- For road and cyclocross bikes, the coefficient is 0.635. The result obtained must be divided by 2.54.
- For cross bikes, the coefficient is 0.259.
How to choose the right bike for your height?
For B’TWIN children’s bicycles and balance bikes, there are the following height differentiation:
|Frame size, inch||Height, cm|
When choosing a child’s bike, the size of the frame and the diameter of the wheels should be considered, as wheels affect the handling and comfort of a child’s bike. There is a recommendation for choosing bicycles for children with a small supply, since you cannot know in advance how much a child will grow up in a season.
Choosing the size of road and road bikes
|49. 51 cm.||157. 163||XS||42/52 cm.|
|51. 54 cm.||163. 170||S||44 / 53.5 cm.|
|55. 57 cm.||170. 178||M||50 / 55.5 cm.|
|57. 59 cm.||178. 183||M / L||53.5 / 57 cm.|
|58. 60 cm.||183. 190||L||55.5 / 58.5 cm.|
|61. 63 cm.||190. 198||XL||58.5 / 61 cm.|
When choosing a bike for training or participating in competitions, the exact size of the frame is important, as it directly affects the result.