Bike trials riding

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Image:Bicycle trial.jpg Bike trials is a form of offroad cycling derived from motorcycle trials where one slowly negotiates man-made and natural obstacles. It originated in Spain and is said to have been invented by Ot Pi who wanted to practice motocross trials on an ordinary push bike.

At the most basic level, trials riding can be summed up as bicycle handling skills, therefore there is much overlap with BMX racing. It evolved from motorcycle trial riding (riding up, over obstacles, man-made or natural) into an off-season bicycle pastime. It now has a strong, though small following and can be seen worldwide. Skills taken from trials riding can be used practically on any bicycle for balance, standing still while still on the pedals, braking, and many other uses. Trials-specific bicycles are usually modified mountain bikes, whose characteristics include, but are not limited to: good brakes, wide handlebars, light parts, and heavy emphasis on the geometry of the frame.

It is totally different from individual time trial races, which are used in road bicycle racing.

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Rulings

The general principle in a bike trials competition is to ride a number of pre-marked sections (usually 2 laps of 10 sections), the winner being the rider with the least points at the end of the competition.

The maximum number of points that can be obtained in each section is 5, the lowest (and best) score is 0 points. The most common way to gain a point is by putting your foot down within a section, for this reason points are sometimes known as "dabs". Certain rules enforce the number of points gained within a section, for example, putting both feet down will result in 5 points.

The fastest rider that does not dab has the lowest time (trial) and score, giving bicycle trials its name.

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Types of bike trials

Currently there are two regulated types of competition ruling, enforced by the UCI and BIU.

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UCI

Within UCI ruling, if any part of the bike except the tires rest on an object in the course, a dab will be given. The UCI rules were changed to this format after too many competitions ended in a draw and riders were forced to ride an extra section. Under UCI rules also allows riders to compete in both stock and mod categories.

Other UCI Rules Riders in the 26" class must also have 6 working gears When riding a section the both tires must never cross the tape even if they are in the air. Each hand must remain on the bike at all times.

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BIU

The rules are unlike UCI scoring and parts of the bike can rest on a section object without resulting in a 'dab'. The sections at BIU events are typically harder and more technical to make up for the use of the bash plate and pedals. The BIU is also more based around the modified category as the sections are set the hardest for the Ellite 20" Modified class. In order to compete in the Ellite class you have to qualify as one of the top 20 riders in the world. The level of riding for the ellite 20" class is regarded as the F1 of bicycle trials since the section difficulty is set at the highest technical level.

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Trialsinoir - aka Street

Trialsinoir is a term used to discribe the basic trials skills when combined with a creative edge and other external influences. This style is also described as "Street" and tends to mix influences from bmx and trials together. The term trialsinoir is a combination of the two words trialsin and noir. Trialsin means bicycle without motor and noir meaning black. So the term trialsinoir refers to the dark side of trials that doesn't fall under the traditional defintion of trials riding.

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Types of bikes

Trials bikes are no longer standard mountain bikes, but over the years have become very specialized.

The two types of biketrials have created two different types of bikes. The bikes can be put into two classes, classified by the wheel sizes of 20" and 26".

The 20" variety of trials bike (known as "Mod" bikes) are more specifically designed for bike trials, consisting of only 1 gear, a bashplate for resting on, and a large rear tire similar to a trials motorcycle rear tire. The term "Mod" comes from the fact that the frames are modified BMX frames, now used for trials. Monty, Koxx, and Echo are three of the more popular modified trials bikes.

The 26" variety of trials bike (known as "Stock" bikes) were originally derived from a normal mountain bikes although now the only similarities are the wheel size. These bikes consist of a minimum of 5 or 6 gears and typically have a longer wheelbase for the competition specific frames. This type of bike has become more and more popular as riders can use traditional mountain bikes found at your local cycling shop.

"New School" 26" bikes have higher bottom bracket to increase bashring clearance. In addition the length from the rear wheel to the front wheel is lengthened by a slacker head angle to make taps easier for the rider. This geometry eases balancing and jumping ("Gapping") from and on the back wheel. "modern" 26" style bikes also have short chainstays to make riding more stable on the rear tire. They are often referred to as bikes with "new school" since they resemble a modified or 20" trials bike and not a mountain bike where the stock category was once based around.

"Old school" 26" bikes tend to have a shorter wheelbase, steeper head angles, and longer chainstays. They are typically used for street style trials or smaller riders and the bikes aren't as specialized. These bikes tend to appear more along the lines of a mountain bike then the "new school" 26" bikes.

Due to the recent surge of street riding, particularly in the UK, there are now 24" trials bikes being released. These are generally shorter for increased flickability and are used almost exclusively for street riding in a more BMX like style. These bikes are illegal to enter in competitions due to the wheel size but are also not very suited for natural riding in comparison to a "mod" bike or a modern "stock" bike.

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External links

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