 After a 20-minute delay, Amm finished in 28th place for the 1951 Senior TT Race at an average race speed of 75.42 mph.For the 1952 Isle of Man TT Race, Amm crashed at Braddan Bridge on lap 3 of the Junior Race.This was followed by a 3rd place in the 1952 Senior TT Race at an average race speed of 92.40 mph, a race that was won by Reg Armstrong for Norton.