A very innovative Dutchman, Herman Meijer from Laren - He Mey La - built and raced a series of bikes, many of them were fast enough to get driver Ton Kooyman, GP points at several occasions: 71, 73, and 74.
Ingenious design features like watercooled crankcases, cassettelike transmissions, and chaintensioning by excenters were used on the Hemeyla racers.
Get the whole story on Herman Meijers own website: WWW.HEMEYLA.NL