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).
List comparing the quantity of various parts used over two consecutive yearly periods from August 1934 to 1936.
| Identifier | ExFiles\Box 127\3\ scan0138 | |
| Date | 30th October 1936 guessed | |
| P A R T S U S E D.{John DeLooze - Company Secretary} August August 1934 to 1935 to 1935. 1936. Inner Valve Springs. 5127 X6215 Outer Valve Springs. 4513 X7568 10 H.P. Timing Chain. 99 204 14 H.P. Timing Chain. 86 158 10 H.P. Fuel Pump. 64 61 14 H.P. Fuel Pump. 40 49 X - Used on approximately 25,000 cars. At an average of 10 springs per car this equals 14,000 used for replacements of 250,000 springs or 5.6% Mileage unknown. | ||