Derny race facts for kids
A derny race is a race in which the cyclists are paced by someone riding a derny.
A Derny is a motorised bicycle designed and built for motor-paced cycling events (e.g.: motor-paced races in six-day and Keirin racing) or motor-paced road races.
The first Dernys were built by "Roger Derny et Fils" of Paris, France in 1938. That firm is no longer in business and any motorised bicycle for pacing is called a "Derny".
The rider of the derny usually sits upright, this makes it easier for the cyclist by reducing wind resistance.
The photographers' motorbikes used to help riders in ordinary races. That is why they were banned from riding in front of the cyclists.
Images for kids
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650cc Triumph TR65 Thunderbird "Stayer" first used at Leicester Velodrome in 1982 and now at Herne Hill Velodrome. Note the roller at the back and stood-up riding position that distinguish a Stayer from a true Derny.