4. 1924 Harley-Davidson Indirect-Action, FH 2-Cam racer.|
Indirect-action two-cams of this design were produced only in 1923 and 1924.
This engine dominated in pro racing, and in the U.S. was successful in both board
track as well as dirt track events. In Europe, this model, equipped
with a transmission chassis, was also successful in road racing. The
indirect-action two-cams are readily identifiable by the tappet blocks which are an
integral feature of the crankcase design. It is estimated that there are less
than six correct indirect-action FH two-cam motors in existence. This is the only
known example of this model to have survived intact, with its entirely original,
short-coupled H-D factory board track race chassis. This example has its original
matched crankcases and straight-fin Ricardo cylinders as well as numerous details
particular to the factory racers.