Comparison Stern Q-stom Alt 2018 vs Stark Terros 700 S 2018 frame 19

Nowadays, there are many types of bicycles. So, city bikes are provided for asphalt (including fixed-gear bikes and cruisers, touring and commuter bikes models can also be included here (universal version combining urban comfort and mountain passability)). Road bikes are also suitable for hard surfaces (with separate subspecies cyclocross, gravel and triathlon bikes). For rough terrain, it is better to pay attention to mountain MTB bikes (there are different types: cross-country, downhill / freeride / enduro, trail, street / dirt). A separate niche is occupied by electric bicycles, BMX and fat bikes.

— Electric bicycles. Bicycles equipped with electric motors and batteries. The method of using such equipment can be different: in some models it only helps the cyclist, reducing the effort on the pedals, in others it allows you to ride without pedalling at all, like on an electric moped (for more details, see "Operating modes"). In terms...of purpose, most of these machines are closest to city bikes, but there are exceptions - in particular, some models combine the capabilities of an electric bike and a fat bike. Electric drive provides additional convenience and reduces the cost of effort when driving; moreover, even a dead battery is not terrible for such a bike - you can continue to move in the usual way, on the pedals. On the other hand, electric bikes are much heavier than classic ones, and they are noticeably more expensive.

- Mountain (MTB). Abbreviation for MountTain Bike. In this case, two types of bicycles are included. The first is the classic “miners”, designed mainly for driving over rough terrain without specific loads typical for specialized varieties (see below). Such bicycles are built on a thick, durable frame, equipped with wide wheels, and tyres with deep treads. Many mountain models are quite suitable for driving on a flat road; of course, here they lose to road models (see below), but if you often have to drive both on the highway and off the asphalt, it is better to choose the MTB. The second variety is models that are close in characteristics to specialized ones (see below), but for one reason or another do not fit into a certain class - for example, due to heavy weight (cross-country), poor adaptability to high jumps (dirt ) and so on.

- Cross country. A type of mountain bike designed for cross-country racing. Some sections of cross-country trails are somewhat simpler than similar elements in competitions such as downhill or trials (see below), but the trails themselves are very diverse. Therefore, a bicycle of this type must combine speed, manoeuvrability, “tenacity” to the ground, and convenience on ups and downs. In practice, this is achieved by using lightweight materials for frames (aluminium, titanium, carbon, see "Frame material"), tyres with deep tread, hardtail or full suspension suspension with lockout functions (see "Suspension", "Rear suspension lockout"). ") and so on.

Downhill/freeride/enduro. A specialized type of mountain bike designed for downhill skiing. Types of such descents differ in the type of surface: downhill uses pre-prepared tracks, while more extreme freeride is carried out on complete off-road, and enduro - on the most difficult sections. However, for all varieties of bicycles, the characteristic features are common: these are wide wheels and heavyweight. The latter is due to the reinforced design: during descents, the weight does not play a decisive role, but the loads on the machine are very high, which requires increased strength and maximum reliability of all components. There is usually only one gear selector - only on the cassette (rear), respectively, there are few speeds. But the suspension on both wheels (see "Amortization") is almost mandatory.

- Trail. The trail is a specific way of riding that combines overcoming obstacles over rough terrain, conquering and descending medium peaks, road over stones and free riding on a flat road. Trail bikes have strong and heavy frames, reinforced wheels and tyres. Most of them are full-suspension with a large range of shock absorber travel (about 130 - 150 mm).

- Street / Dirt. A type of mountain bike designed for stunt riding and in some places approaching BMX. They can be designed for different styles: street acrobatics using urban elements like curbs and stairs; dirt - jumping from earthen springboards with performing tricks in the air. However, all such bicycles are characterized by common features: a small frame, one speed, as well as a minimum of depreciation or its complete absence.

- City. This class of bicycles is designed for city driving. This implies the usual movement on roads with a smooth surface, without any "extreme". City bikes are often equipped with accessories designed to increase ride comfort and enhance the bike's capabilities, such as spring saddles, racks/panniers, full-size fenders, chain guards, and so on. (see "Complete set"). For long trips and difficult conditions, city bikes are poorly suited, and therefore they can be recommended to adherents of a calm style of riding along city arteries and for pleasure riding along park paths.

— Fix. Single-speed fixed bikes were originally created as sports equipment for riding on cycle tracks. But in some subcultures of riders, they are used for the urban rhythm of travel. A distinctive feature of the nature of fixes is that the pedals of the bicycle always spin as long as the rear wheel rotates.

— Cruiser. Models with a characteristic elongated frame geometry, vertical seating, a soft comfortable saddle and a wide handlebar moved forward. When designing cruisers, they were inspired by the design of retro motorcycles. They are positioned as successful walking solutions.

— Commuter. Bicycles of this type are a cross between mountain bikes (MTB) and city bikes. On the one hand, fitness bikes provide a “sporty”, inclined landing and a large number of gears, on the other hand, there is no depreciation in the design, and additional “chips” can be provided, such as a trunk or baskets on the steering wheel, and the wheels are large (usually 28 "). This allows you to accelerate to fairly high speeds, while the bikes perfectly adapt to uneven roads and increased loads."Road" can be used to move around the city, if speed is important in such trips and the classic city bike is too slow for this, to recover and keep fit, etc.

- Touring. Bicycles designed for long-distance travel on different types of roads - both on a hard surface and on primers or rough terrain. Outwardly, they are most similar to road, gravel and cyclocross bikes, but in fact they combine the properties of mountain, road and city models. So, most tourist bikes have a more massive and durable frame than "road bikes", which allows you to more or less successfully move off paved roads. The steering wheel can be either straight or road (see "Steering wheel shape"). In addition, many models are equipped with front racks (see "Complete set") or at least mounts for them; also, the design often provides wings, a footboard and other additional equipment that provides additional comfort on long-distance bike trips.

- Road. A specialized class of bicycles designed to move on smooth roads over long distances. Road models feature a “recumbent” rider position (more forward lean) for better aerodynamics, are equipped with narrow wheels and handlebars with a characteristic curved design (see "Steering wheel model"), and do not have any shock absorbers (see "Suspension"). Thanks to all this, high speed of movement with minimal resistance is ensured - on good road surfaces, road bikes are better than any other models for long trips (suffice it to say that this type of bicycle is used in large-scale cycling races like the Tour de France). At the same time, all the advantages appear only on smooth, dry roads.

— Gravel. Bicycles that combine the features of road and mountain machines; in fact - devices designed to comfortably ride both on and off-road. The key point in this case is comfort: the “gravel road” loses to the “road” in speed, and the MTB in cross-country ability, but it is more versatile and comfortable on different types of surfaces. Note that specific criteria for gravel bikes vary from manufacturer to manufacturer. However, common features can be identified in all such models: this is a combination of a “road” steering wheel with a relatively high landing, rather thick soft tyres and disc brakes. We also note that at first glance, the “gravel roads” are similar to the cyclocross described below, but this impression is deceptive: the cyclocross is primarily a sports apparatus.

— Cyclocross. In the most general terms, this variety can be described as a modified version of road bikes (see above) with increased cross-country ability, suitable for off-road travel - grass, sand, gravel, etc. Being outwardly very similar to traditional "road bikes", cyclocrosses in at the same time, they differ from them in wider and thicker wheels and a smaller inclination of the rider when landing. In addition, cyclocross as a sport discipline provides that riders have to overcome part of the distance on foot, with a bicycle on their shoulder. In light of this, specialized bicycles for such races are also made based on the convenience of carrying on the shoulder (wide frame, traction cables hidden inside the frame). And from gravel models (see above), cyclocrosses differ primarily in that they are designed not so much for comfort as for speed and maneuverability.

For triathlon. A specialized type of road bike with a less “recumbent” rider posture and a more pronounced aerodynamic fit that allows you to maintain high speed with minimal effort. A huge bonus to aerodynamics is also given by high profile wheel rims. The weight of such bicycles is small (about 8-10 kg), they are also equipped with hydrators so that the rider can drink without changing the seat. A triathlon bike is an effective weapon to achieve your sporting goals. For everyday trips, such bikes are not customary to use at all.

— BMX. Bicycles designed to ride in the style of BMX (Bicycle Moto Cross - bicycle motocross). There are several varieties of BMX, but all of them are characterized by high loads on the structure and the performance of acrobatic stunts, which are practically inaccessible to other types of bicycles. Accordingly, BMX models have a low and very strong frame, wide wheels of small diameter (for good grip and powerful torque) and, most often, one gear (for ease of control and reliability). They can also be equipped with additional devices - for example, an axle of the front wheel extended in both directions, which the athlete uses as a step when performing tricks. Note that for normal driving on roads, BMXs are poorly suited, their purpose is acrobatics.

- Fatbike. Powerful mountain bikes designed specifically to overcome difficult obstacles such as loose snow, sand or impassable mud. First of all, they are distinguished by extremely wide tyres (see "Tyre width") and low tyre pressure, which improves grip. When riding on loose surfaces, the wheels of the bike do not fall through, and the lower pressure allows you not to get stuck in the ground.

Frame size refers to the distance from the saddle attachment point to the bottom bracket attachment point (axles with gears and pedals). The main parameters that determine the choice of a bike for frame size are the height of the user, the purpose of the bike and the intended riding style.It is also worth considering the female frame, which is lowered, which allows you to ride comfortably even in a skirt or dress.

User height is the most significant factor. In general, the taller the user, the larger the frame should be. The universal formula that allows you to calculate a specific size is as follows: the length of the leg from the groin to the heel in centimeters must be multiplied by 0.6, and then divided by 2.5 — you get the approximate size of the frame in inches. But in the characteristics of brands, the frame can also be indicated in the usual form for measuring size XXS, XS, S, M, L, XL and XXL.

However, note that this value is very arbitrary and approximate, it can only be used for simple bicycles not intended for extreme driving (for example, city bikes, see "Destination"). If you choose a more specialized model (mountain, road, BMX) — it is better to refer to the tables for th...e appropriate type, because. sizes for one height can vary significantly depending on the destination. In addition, different manufacturers have different frame geometry and measurement methods, and therefore, for the most accurate selection, it is recommended to use the manufacturers' own tables.

Note that the optimal frame size is not absolute — in most cases, for the same height, “neighboring” sizes are quite suitable. And here it is worth paying attention to the intended driving style. It is believed that small, well-controlled frames are better suited for extreme variant, and larger and more stable ones are better suited for long-term calm movement.

The user's height recommended by the manufacturer is calculated according to several parameters. One is the wheel diameter, and the second and more important is the frame size. If everything is simple with the wheel size — it is round and always the same, then the frame size complicates the choice. Different types of bicycles have their own frame shape, so even the same size can be suitable for different heights. And this is not to mention the features of the manufacturer, who like to do everything for themselves, and not in a general manner. Therefore, the size of the frame of each bicycle has its own size and it is still better to choose a bicycle by personally “saddling” it. If this is not possible, then our point will tell you what height, according to the manufacturer, this configuration (frame + wheel) of the bike is designed for.

— Steel. Steel is distinguished by high strength and rigidity, in terms of resistance to deformation, it noticeably surpasses other alloys and is inferior only to carbon fiber. At the same time, such frames dampen vibrations well, are inexpensive, and in the event of a breakdown, they are easily repaired. On the other hand, steel is heavy, three times heavier than aluminium and twice as heavy as titanium; therefore, such frames are found mainly among inexpensive mountain and city bikes, for which a lot of weight is not critical. It is also worth considering that this material is susceptible to corrosion if the protective coating is damaged.

— Chromium molybdenum steel(Cro-Mo). An advanced variation of the steel described above. By themselves, chromium-molybdenum alloys have high strength and reliability, and frames made from them can have different wall thicknesses (depending on the load that a particular section is subjected to) — this allows you to slightly reduce weight. Thanks to this, Cro-Mo alloys are found even among fairly advanced road bikes, and they are also popular in touring models. At the same time, such frames cost much more than “ordinary” steel ones.

— Aluminium. Actually, bicycles do not use pure aluminium, but various alloys based on it. They differ somewhat in characteristics, but they have a number of common features, the main of whi...ch is low weight combined with good strength characteristics. Due to this, aluminium alloys are widely used in road bikes, as well as in touring mountain bikes (see “Intended Use”). The main disadvantage of these materials is rigidity: they absorb vibrations worse than steel, which is why they are poorly suited for models without shock absorption (see below), and with a strong impact, such a frame will break rather than bend.

— Carbon. Resin-bonded carbon fiber composite. It is used in high-end bicycles, as it is very expensive, but it is characterized by very high strength combined with low weight. Moreover, the properties of carbon fiber make it possible to increase strength not just in certain areas, but in certain directions, which contributes to even greater reliability. Note that carbon frames can be either solid (monolithic) or composite — in the latter case, individual elements are connected by metal parts, which reduces the cost, but makes the structure susceptible to corrosion. It is also worth considering that the quality of carbon in general depends on the price category of the bike, and relatively inexpensive frames can be sensitive to strong point impacts. This material is almost impossible to repair.

— Titan. A fairly advanced material that combines high strength, elasticity (which provides soft vibration damping), corrosion resistance and very low weight. However, the cost of such frames is quite high, and therefore they are used mainly in premium mountain and road bikes.

— Magnesium alloy. This material is notable primarily for its very low weight (many times lighter than aluminium), while it has good stiffness and elasticity characteristics, dampens vibrations well, and its price is relatively low. At the same time, magnesium alloys have a number of significant drawbacks. In particular, they do not tolerate impacts, especially point impacts, and are also extremely sensitive to corrosion even with minor damage to the protective coating, which is why such frames are very demanding for care and storage.

Tyre model supplied with the bike as standard. Different tyres have different purposes and characteristics; knowing the tyre model, you can clarify these points and check how they correspond to your wishes. This is especially important when choosing a machine for serious cycling.

The model of the hub used in the front wheel of a bicycle.

The hub is the central part in the wheel through which the axis of rotation passes. Features of the behavior of a bicycle depend on its characteristics, in particular, “rolling” (the ability to move by inertia, without pedaling). Knowing the model of the front hub, you can clarify its characteristics according to the manufacturer's documentation, find reviews from other users, etc., in order to determine how this model suits you.

Model of the hub used in the rear wheel of a bicycle. See Front Hub Model for details.

Model of the carriage installed on the bike as standard. The bottom bracket is the part that connects the system (front sprockets with pedals) and the frame; roughly speaking — an axle with bearings.

For details on the meaning of the model of a particular part, see "Cassette Model".

Model of the chain supplied as standard with the bike. For details on the value of the Model parameter for any part, see Cassette Model