This circa late 1940s André Bertin “Type Special” French Racer was built by André Bertin, a former professional cyclist. At Bicyclesport and Bicycle Specialties, we sold Bertin over the years…
CAMPAGNOLO AND THE DOUBLE SPRING DERAILLEUR
By Mike Barry Sr. In 1951 Campagnolo introduced the first Gran Sport “deformable parallelogram” derailleur that revolutionized the derailleur industry. It was superbly made– arguably better made than anything before…