By a curious coincidence, Frederico Della Ferrera (inset), on the above o.h.v. twin bearing his name, recently set up an Italian mean speed record for the flying kilometre in the 500 c.c. class in exactly the same time as R. N. Judd's Brooklands record on a Norton. The two Italian times were 26.2 sec. and 25.6 sec. 239 sec. mean speed 86.37 m.p.h.
Credit: The Motor Cycle, Jan 12th 1922