New UCI test jig has lasers and algorithms

The UCI and have developed a new Quick Test Bike Measurement Jig for pre-event bike checks.

The UCI has a strict set of bike set-up regulations in an effort to manage the position riders adopt and relies on a so-called “jig” to test bikes before the start of time trial events. -watch and pursuit. The UCI says the regulations are designed to keep riders safe, with a healthy dose of maintaining a somewhat traditional position for good measure.

Although morphological exemptions are available, current regulations state that the end of the saddle cannot be less than five cm behind the center of the bottom bracket and that the reach to the end of the aero extensions cannot exceed 75 cm from the same point of the bottom bracket. , among others. The UCI relies on the commissaires and these test jigs to carry out the tests and enforce the regulations at each race.

On the road, testing is done before the start of UCI-sanctioned time trials and can be a source of considerable stress for riders and teams. Sit down about a hundred yards before the start line of any Grand Tour time trial and you’ll see team staff bring bikes in for testing hours before the race, just for the riders to do test the bikes again a few minutes after the start. Most teams will have replica jigs on their service course to make sure the bikes are up to specification, but problems still arise.

The outgoing jigs were designed over a decade ago and their accuracy was susceptible to minor issues such as even slightly uneven ground. It was not uncommon for a bike to pass the test on one jig, only to fail by the narrowest of margins on another.

Bike checks are an integral part of the racing scene. This Trek is checked on one of the previous generation jigs before a Tour time trial.

The UCI had recognized the need for a new gauge as early as 12 months when Mick Rogers, head of road innovation at the UCI, told CyclingTips that work was underway to develop a new test gauge based on laser with much greater precision. The new jig has been developed in partnership with bike fitting tool specialists and will make its debut on stage two of the Giro d’Italia this weekend.

By using its existing tools and developing new software and algorithms, says its new measuring jig is more accurate and much faster. A laser box on the jig measures the bike and its angles, while the
The algorithm determines whether or not the rider’s position complies with the UCI Regulations. When the measurement is complete, the template displays a color indication with green for success and red for failure. The whole process is said to take about 30 seconds. will also offer the new jig to its dealers and customers such as bike fitters, professional teams and national federations who all use jigs to ensure a rider’s position is within the rules before events. . This avoids a stressful situation where a runner has to adapt their proven position moments before the start of a race.

Sharon D. Cole