Posted by admin18 September 2021

Mountain bikes

A mountain bike (MTB) or mountain bicycle is a type of bicycle designed for off-road riding. Mountain bikes are almost like other kinds of bicycles, but they have features designed to reinforce durability and performance in rough terrain, therefore they're heavier. Suspension forks, large knobby tyres, more durable wheels, stronger brakes, straight, extra-wide handlebars to improve balance and comfort over rough terrain, lower gear-ratios for climbing steep grades, and sometimes rear suspension to smooth the trail, also as dropper-posts to quickly adjust the seat height, are all common features.

Mountain bikes are frequently designed for usage on unpaved surfaces such as mountain trails, single track, fire roads, and other such surfaces. Rocks, roots, sloppy mud, and steep hills are common features of mountain biking terrain. Many trails have technical trail features (TTFs) like log piles, log rides, rock gardens, skinnies, gap jumps, and wallrides. Mountain bikes are built to handle this type of terrain and features. Due to its heavy-duty design, stronger rims, and larger tyres, this type of bicycle is also popular among urban riders and couriers who must negotiate potholes and over curbs.

Many new varieties of mountain biking have emerged since the sport's inception in the 1970s, including cross-country (XC), enduro, all-mountain, freeride, downhill, and a variety of track and slalom variants. Each of them places various demands on the bike, necessitating unique designs for peak performance. MTB progress has resulted in increased suspension travel (typically up to 8 inches (200 mm)) and gearing up to 36 speeds, allowing for both climbing and quick descents. Advances in gearing have also resulted in a "1x" (pronounced "one-by") trend, which reduces gearing to one chainring in front and a cassette in the back, often with 9 to 12 sprockets.

Based on suspension configuration, mountain bikes are typically classified into four broad categories:
Rigid: A mountain bike with wide, knobby tyres and straight handlebars, but no suspension in the front or rear.
A hardtail mountain bike has a suspension fork for the front wheel but otherwise has a solid frame.
A mountain bike with pivots in the frame but no rear shock is a recent addition. The frame's flex absorbs certain vibrations. These are typically cross-country bikes.
A mountain bike with full suspension (or dual suspension) has both front and rear suspension. The front suspension is often a telescopic fork similar to that of a motorcycle, while the rear suspension is a mechanical linkage with shock-absorbing components.


Designs that are discipline-oriented

Mountain riding is divided into numerous types, which are usually determined by the terrain and, as a result, the type of bicycles used. Styles have evolved at a rapid pace. Originally, all were fairly homemade, home-built machines utilised for a variety of feats, tricks, racing, or other activities. The overall layout was similar. More specialised designs and equipment were produced as the sport grew in popularity. Beyond simple front suspension XC bicycles, additional market segmentation developed in the mid-1990s, when large bicycle and equipment manufacturers were able to adapt precisely to shifting demands. There is a wide range of discipline-oriented designs available today. Mountain bikes can be multi-thousand dollar machines that are custom-built for the sport for which they were created.


These bicycles are primarily intended for racing purposes. The emphasis is on endurance, which necessitates light and efficient designs. This was primarily comprised of a lightweight steel rigid frame and fork in the 1980s and early 1990s. Lightweight aluminium frames and suspension forks with short travel (65 to 110 mm) gained popularity during the 1990s. Since then, full-suspension designs have grown in popularity among racers and aficionados. The utilisation of sophisticated carbon fibre composites enables designers to create full-suspension designs weighing less than 10 kilos (22 lb). However, hardtails and soft tails are observed frequently in this sport. The initial standard of 26" wheels has been mostly superseded by 700c wheels, and now 29" wheels are taking over this discipline. Head angles are typically 67-70°, a design that promotes climbing ability and quick reflexes over descending and stability. They are meant for off-road use, but not for use on steep or very difficult terrain.


Downhill is similar, but with less emphasis on weight and more on strength. These designs have plenty of suspension travel, with at least 7 inches (180 mm) of travel. The emphasis is on trail features with a lot of air time, such as jumps and drops. As a result, they can withstand high impact. Due to concerns about strength and longevity, frames and parts are rarely built of carbon fibre and are instead often made of aluminium, surrendering minor weight gain for more predictable material response under hard usage. Climbing reduces pedalling efficiency and manoeuvrability. Originally, free-ride bikes had geometry somewhere between all-mountain and downhill, with frame angles steeper than downhill and higher rider posture, aiding mobility on tricky or low-speed features seen on "North Shore" style trails. Weights range from 14 to 20 kilogrammes (31 to 44 pounds), with the vast variation owing to the wide range of components suitable for the task. Some people include slopestyle and dirt jump motorcycles in this category since they serve similar functions, but the design differences are substantial.


A cross between a dirt jump and a freeride, with comparable geometry to dirt jumpers but around 4" (100mm) of suspension travel in both the front and back. These bikes are often used by professional slopestyle riders and are designed to handle the massive jumps and high speeds encountered during competition. The frames are either modified from current all-mountain or free-ride designs or created particularly for the purpose, with sturdy frame designs and sophisticated suspension linkages to maximise their minimum suspension travel. In proportion to their short suspension travel, these bikes have relatively slack head angles, as well as a little more aggressive overall geometry than the dirt jumpers on which they are based. These bikes are frequently outfitted with a combination of dirt jump and all-mountain interface specifications (headset size, bottom bracket-style, rear axle width and diameter, rear derailleur hanger) to accommodate both dirt and freeride To handle the high speeds and heavy impacts associated with their operation, jump components as needed. When compared to dirt jump bikes, slope-style bikes are also utilised for light downhill or trail riding by many, if not riding jumps on the same scale as professional riders, with their longevity and sophisticated suspension setups allowing for greater adaptability.


There are two types of trials bikes: those with 26" wheels (referred to as "stock") and those with 20" wheels (referred to as "mod" because they were historically modified BMX cycles). They normally do not have any suspension, though some do use some sort of it. Stock bikes are required by competition rules to have many gears for competition, yet most riders never use their shifters. The rules of the competition do not require mod bikes to have any gears. Many non-competitive riders ride single-speed, using a relatively low-speed, high-torque gear. Most modern trials bikes have no seat at all since the rider spends all of her time out of the saddle, and trials riding does not lend itself to the use of the saddle as a control interface as it does in normal mountain biking. These bikes are considerably lighter than almost all other mountain bikes, weighing between 7 and 11 kg (15 to 24 lb). This makes it much easier to manoeuvre the bike.


Designs are rigid or hard-tail with 3 to 4.5 inches (76 to 114 mm) of front suspension, falling between bicycle motocross (BMX) and free-ride. Durable frames with low bottom brackets and short chainstays allow for greater agility. Designs frequently overlap with four-cross, with many frames featuring replaceable derailleur hangers and/or integrated chain tensioners to accommodate single and multi-speed systems. Tires are typically 24 or 26 inches in diameter, fast-rolling slicks or semi-slicks with small casings (approx. 1.8-2.2"). To allow room for tricks, low seatposts and big handlebars were used. Most have an extended rear brake line and no front brake, allowing the rider to spin the handlebars repeatedly without tangling cables.


These bikes are a cross between trail bikes and downhill bikes. The average weight is 13 to 16 kg (29 to 35 lb). The frame is often made of aluminium or carbon fibre. Longer full-suspension designs, often as much as 6 or 7 inches, are among the features (150 or 180 mm). The suspension damping is frequently adjustable to aid in climbing and descending. The head angles are even looser, ranging from 65° to 63.5°. They are intended to be able to climb and descend competently. These bikes are typically used for all-day rides, hence the name "all-mountain."Enduro and all-mountain designs have been split, with the enduro focusing greater attention on the descent due to the increased emphasis on the timed downhill run in racing when compared to more conventional all-mountain riding, and this category of mountain bikes is becoming one of the more popular disciplines.

Trek Slash and Specialized Enduro are two examples.


These bikes are designed for downhill racing and bike parks, with ultra-long wheelbases, plenty of travel (typically 200mm or more), and dual-crown forks that delay handling but allow the bike to blast downhill in a straight line and hit enormous jumps better than anything else.


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