ROL Wheels D’Huez Road Bike Wheelset – Shimano

  • 27mm Aero Rim
  • 3D Forged Alloy ROL Hubset
  • SAPIM CX-Ray Spokes, DT Swiss Alloy ProLock Nipples
  • 20 spoke front-radially laced, 24 spoke rear-2x2x lacing
  • Sealed Cartridge Bearings. Includes Skewers.

Product Description
The D’Huez (doo-ez) named after the famous climbing stage of the Tour de France, is perfectly suited for climbing, road racing, and triathlons. We punished the D’Huez on climbs and winter training rides for a year before bringing it to market. At a scant 1478 grams, the D’huez boasts a versatility found in wheelsets twice its price. Suggested weight limit of 175lbs. Weight: 639g front, 839g rear. Compatibility: For Shimano, our hub bodies are compatible with Shimano… More >>

ROL Wheels D’Huez Road Bike Wheelset – Shimano

Mountain bike trials

Rules

Briton Joe Oakley receives a one-point penalty for “dabbing” the ground with his foot. The official indicates this with a raised finger.

The general principle in a bike trials competition is to ride a number of pre-marked sections (usually 2 laps of 10 sections or 3 laps of 7 sections), the winner being the rider with the fewest points at the end of the competition.

Currently there are two official types of competition rules, enforced by the UCI and BikeTrial International Union.

The maximum number of points that can be obtained in each section is 5, the lowest (and best) score is 0 points or ‘clean’. The most common way to gain a point is by putting a 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 or a hand will result in 5 points. Exceeding the time limit for the course will either result in 5 points (BIU rules) or an additional point for every 15 seconds over the limit (UCI rules).

UCI

Riders inspecting a section, as permitted under UCI regulations.

Within UCI rules, if any part of the bike except the tires touch any 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. UCI rules also allows riders to compete in both mod and stock categories.

When a rider is in a section, neither tire is allowed to cross the side boundary tape even if the wheel is in the air. The rider’s hands must remain on the handlebars. Before beginning a section, a rider is allowed to walk through it, and examine all the elements, but must not enter it with their bike.

The UCI Mountain Bike & Trials World Championships are held annually and crown a 20-inch and 26-inch wheel trials world champion.

BIU

Bicycle trial rider

The rules are unlike UCI scoring and parts of the bike (for example, bash guard or bash ring, cranks and pedals) can rest on an object without resulting in a ‘dab’. The level of riding for the elite 20 class is regarded as the highest in bicycle racing since the section beginner is set at the highest technical level[who?].

Interscolar

The rules are the same as the “BIU” but only people belonging to a club or school can compete in these, these are for lower level students to learn how to compete.

Bike design

Close-up of the cranks of a trials bike. Note the very small chainring.

Trials bikes are often designed without regard for attaching a seat. Competition riding does not require the rider to sit down and the omission allows for a lighter bike which interferes less with the body movements of the rider. Brakes must be more powerful than standard bicycle brakes in order to prevent the wheel from moving when hopping on uneven surfaces. Tires and rims are wide allowing low pressures and increased contact and grip. Gear ratios are lower than on most bicycles in order to provide the power and quick acceleration needed to move the bike at the typically low speeds of trials riding.

According to current competition standards there are two classes of trials bike recognized. As the distinguishing characteristic of the classes is the bike’s approximate wheel diameter, the classes are known as 20 and 26. These specific sizes were adopted from previously available bikes.

20 ‘Mod Bikes’

A rider on a 20″ trials bike.

The first purpose made and commercially available trials bikes were manufactured by Montesa a mototrials company and were based on the modified bmx bikes that riders had been using. As a result of being based on BMX bikes, the rear dropout spacing is 116mm. These 20 wheeled trials bikes have become known colloquially as Mod bikes.

26 ‘Stock Bikes’

Early mountain bikes were well suited to the trials riding being done and so a separate class was introduced for them. 26 used to refer to mountain bike kept in original condition. 26 classed bikes were required to have at least six working gear ratios and a seat. Now, however, this designation is often used to describe any trials bike with 26 wheels. Stock bikes have a dropout spacing of 135mm. There is a subcategory of Stock trials bikes, sometimes called ‘Modstock Bikes’: these bikes have 26 inch wheels but have horizontal dropouts like on mod bikes as opposed to vertical dropouts on stock bikes. The spacing of the dropout is often smaller, to fit the rear hub of a 20″ bike. Horizontal dropouts become more and more common.

24 ‘Street trials hybrid Bikes’

These bikes have 24″ wheels and usually have horizontal dropouts, although they are spaced to fit a 135mm hub as on a 26″ bike. They are not legally allowed to compete in competitions but suit riders with a more “street” style. (e.g.spins, manuals, bunnyhops)

Brakes

Bicycle trial rider about to jump (in Spain)

Trial riding requires very good brake control, and as a result, bicycle trials riders sometimes have unusual brakes. On the front wheel, good brake modulation is usually the goal, whereas in the rear, maximum braking power is more important.[citation needed]In the rear, riders will often run special hydraulic rim brakes with frame stiffeners called brake boosters, and they sometimes grind their rims to create a rough surface and even put roofing tar on their rims to make them sticky. Disc brakes are also common. UCI regulations only stipulate that the bike must have a working front and rear brake.

Course design

A highly artificial course consisting of trucks and earthmoving equipment, at the 2009 world championships.

UCI regulations stipulate that a course consist of at least 14 sections per course, including repeated sections. At most two sections can be composed entirely of artificial elements. Both sides of the course are marked with plastic tape, and there must be a clear stretch of 3 metres prior to the finish line, in order to prevent riders jumping over the line from an obstacle. Maximum obstacle jump heights are specified, from 0.80 to 1.80 metres depending on category. The sections, each approximately 60m in length, are laid out on a circuit to allow riders to ride from one section to the next, but whether the sections have to be completed in order depends on the individual competition.

References

^ http://www.uci.ch/Modules/BUILTIN/getObject.asp?MenuId=MTkzNg&ObjTypeCode=FILE&type=FILE&id=34595&LangId=1

^ “In Spain around 1980, Pedro Pi, a Montesa executive and rider, started trialsin. Pedro also designed the 20×20 Montesa trials bicycle, which evolved into the Monty.”

^ a b http://www.uci.ch/Modules/BUILTIN/getObject.asp?MenuId=&ObjTypeCode=FILE&type=FILE&id=34595&LangId=1

The spacing of the drop outs is 116mm, the same as on a mod trials bike.

External links

Wikimedia Commons has media related to: Trial bikes

Biketrial Federation UK – the forward-looking British Trials Organisation

Trials from the Union Cycliste Internationale

UK BikeTrial – an inclusive governing body

Tutorial sites

TrashZen.com

Trials-Online.com

v  d  e

Mountain bike racing

Cross-country  Downhill  Freeride  Dual slalom  Four-cross  Marathon  24 hour  Enduro  Epic  Trials

Olympic Games  World Championships  World Cup

Categories: Cycle racing | Mountain bikingHidden categories: All articles with specifically-marked weasel-worded phrases | Articles with specifically-marked weasel-worded phrases from March 2008 | All articles with unsourced statements | Articles with unsourced statements from September 2009

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Know these Tips about Joining a Bike Racing Team

Many amateur cyclists dream of taking their passion to the next level and joining a bike racing team. But before this can be done there are some very important considerations that must understood first. Here is what you require to know before joining a bike racing team the gravity bike stand.

 

Riding a bike for delight and biking as a member of a competitive team are very different. Once a person joins a team there is an important commitment that is made where other team members will depend on you. It is important to be prepared to fulfill this commitment responsibly.

 

Participating on a competitive team also takes a lot out of the individual both physically and mentally. The tension of the race, inclement weather conditions and the physical hardships all element to make bike racing challenging enough. There are certain things which you must be aware of before embarking on a professional journey – bicycle repair stand. Here is a quick checklist of what you should know before joining a bike racing team.

 

The first prerequisite before joining a bike racing team is that you should be sure about your decision of taking up the sport at a highly competitive level. This decision will be prompted by your love for the game. Do not get carried away with an immediate emotional determination and be prepared to think carefully before you make the last decision.

 

Before joining a bike racing team, you need to know the fundamental of the sport very meticulously. You also need to work on your total body and especially on developing your muscle strength. For that you can need to work under the supervision of a practiced physical trainer. You can also train under a professional cyclist who knows the requirements of the game better than anybody else.

 

Like every many other sports, a bike racing team is also comprised of specialists. Each member of the team works to his strength. It will be important to know what your strength is.

 

For example there are cyclists who are good at riding the bike uphill and therefore good mountain bikers. There are time trial specialists who have a good timing and therefore can cover a lot of distance within a minimum time. There are some riders of the team who are known as domestics. These are the ones who form a kind of shield against aggressive cyclists from the opponent teams.

 

Each of these players work in cooperation with the other and under the able guidance of the captain makes their team successful in a competition. Therefore you should be aware of your strength as a cyclist and consequently look for a place in the local bike racing team.

 

There are different kinds of bike racing like mountain bike racing, cycle speedway, cyclo-cross, road bicycle racing, bike trials, BMX racing and track cycling.

 

At present even amateur bike racing has gained heavily in terms of popularity. Amateur riders often come together to form a team of their own. All the leading teams in the professional cycling circuit have to register themselves with the Union Cycliste Internationale that has introduced a rating system to judge the teams in the circuit.

 

Do not expect to be spotted by bigger and better teams in the professional circuit at the very beginning of your career. It is only when you perform well constantly that you would be able to establish a name for yourself. Expecting too much in the initial stages can bring about large disappointment when you fail to execute what you had set out to achieve.

 

 

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TIRE 20X1.75 ACTION STREET WHITE K-123
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Wheel Master Mavic CXP22 Wheel Set – 700 x 20, Quick Release, Black

ROL Wheels Race SL Road Bike Wheelset – Shimano

  • 30mm Alloy “Aero” Rim
  • 3D Forged Alloy ROL Hubset
  • SAPIM CX-Ray Spokes, DT Swiss Alloy ProLock Nipples
  • 20 spoke front-radially laced, 24 spoke rear-2x2x lacing
  • Sealed Cartridge Bearings. Includes Skewers.

Product Description
The ROL Wheels Race SL is truly a world-class wheelset! Fast becoming a favorite among regional racing teams around the country, we designed it to dominate the competitive field of high-end wheelsets. The Race SL is a perfect choice for the cyclist looking for precise handling, stiffness and ride quality. This hand-built wheelset is perfect for road racing, criteriums and triathlons. Weight: 672g front, 878g rear. Compatibility: For Shimano, our hub bodies are compa… More >>

ROL Wheels Race SL Road Bike Wheelset – Shimano

ROL Wheels Volant Road Bike Wheelset – Shimano

  • 27mm Aero Rim
  • 3.2mm Sandvik Stainless Bladed Spokes
  • 20 spoke front-radially laced, 24 spoke rear-2x2x lacing
  • Sealed Cartridge Bearings
  • Includes Skewers

Product Description
The ROL Wheels Volant is the perfect combination of performance, affordability, and reliability. Strong enough to endure over 10,000 miles per year, the Volant is the absolute choice for the everyday warrior. The competitor in you will find outstanding performance and an aerodynamic edge. Gram for gram, the Volant offers greater performance than any wheelset in its class. Weight: 715g front, 919g rear. Compatibility: For Shimano, our hub bodies are compatible with S… More >>

ROL Wheels Volant Road Bike Wheelset – Shimano