Bike Trials Rules (NORBA/UBA)|
Competition Organizations with other rules
NATS (North American Trials Series)
BIU (BikeTrial International Union)
What is Bike Trials?
What is Bike Trials?
How long do I have to complete a section?
Stock Bike Class. (BikeTrials.com note: NORBA/UBA now allows just about any kind of 26" wheeled bike to be used for Beginner through Expert, including singlespeed bikes. Both modified and stock classes usually ride on the same sections, now, as well.) This is for all riders on traditional unmodified mountain bikes with a minimum 40" wheelbase, functional rear derailleur with five or more gears, no skid plate, no more than 10 1/2" chainring clearance and chainrings on one side of bottom bracket only and a minimum of 26" front wheel and 24" rear wheel. A typical stock bike section might require the rider to negotiate tight turns on level ground, logs under 8", hills with questionable traction and drop-offs of less than two feet. Stock bike sections designed for riders with Beginner to Sport skill serve as an orientation to the flagging system and bike handling skills used in bike trials.
Any bicycle that is determined by the event director to be dangerous will not be admitted to the event.
Trials Bike Class. This is for competitors with modified bikes, minimum 20" wheels, brakes on each wheel, propelled by a pedal crank system. Trials bike sections can have turns that are tighter than the turning radius of most bikes, unlimited logs or rocks, with vertical faces, drop-offs, double logs plus all combinations of any type of surface traction.
During competition a rider may repair or replace the bicycle between sections. If a rider replaces the bicycle it must be of the same type and must be approved by the Event Director.
If a rider is competing in both stock and modified classes in the same competition, the rider must choose to complete one class or the other first. The rider must then do the entire competition for that class before starting the next class.
Clean Section - No errors, or dabs.
Course - The bike trials area within, and including, the boundary markers, ribbons or flags. A rider is in the section when the front axle passes through the start gate and is finished with the section when the front axle passes through the finish gate.
Dab - Any contact which provides support for the rider (other than pedal or skid plate).
Outside the Section - Either tire or axle passing outside the ribbon and flags, dabbing outside is one point.
Gate Foul - Not riding the sections in the proper order, not following the proper course markings, or entering or exiting the wrong gate.
Section - A single segment of the bike trials competition. There can be any number of sections at any given bike trials competition, but the typical number is between five and ten. Sections should be of a natural and artificial mix, varying in length, difficulty and type of obstacles. Each section will test the skills of a rider in balance, strength, agility and endurance. The section should have a minimum width of 1 meter. Course boundary markers or ribbons should be between 4" and 18" from the ground. The ribbons marking section limits on the right should be red and on the left should be blue. Sections are marked according to class and category. A rider may begin at any section (unless specified otherwise) but once started must complete the course in order.
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