With a 50kg weight limit Continental racing motor cycles ran without fripperies such as brakes. In response to this a French magazine staged the Quarter-Litre Criterium at the Parx des Princes velodrome. My French pal Fanfan recently came up with an excerpt from the contemporary report and a clutch of pics; you’ll find them in 1903 (wordsearch ‘Criterium’)…and be ready to make allowances for my translation of the French report—Désolé pour ça, Fanfan.
Motorcycle Timeline 