From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Hardness test results for Cadillac V16 tappet rollers and camshafts after 10,000 miles trials in France.
| Identifier | ExFiles\Box 125\1\ scan0244 | |
| Date | 22th March 1935 | |
| CADILLAC - (V16) - AFTER 10,000 MILES TRIALS IN FRANCE 22-3-35 HARDNESS OF TAPPET ROLLERS = ROCKWELL 'C'60 HARDNESS OF CAMSHAFTS = ROCKWELL 'C'62 ROLLS-ROYCE, L PRINT ROOM MAR 22 1935 DERBY | ||