Since this version of the 2-cam motor was not introduced until sometime in 1924, the question arises: why are these machines racing on the Kansas City board track in 1923?
Could these photographs have been taken at another track or at a later date? I'm still trying to figure this out.
Clue: Ralph Hepburn (pictured here) retired from professional motorcycle racing at the end of the 1924 season.
Installed: April 12, 1997|
Revised: June 28, 2003