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).
Continued list of reasons for a change, with an observation on a broken 3rd speed wheel and a diagram of the gear tooth.
| Identifier | ExFiles\Box 103\4\ scan0047 | |
| Date | 27th April 1929 guessed | |
| contd :- -2- (1) For ease of management (confusion) of Sales. (2) Instruction Book and Spares. (3) To make a definite impression of gain in performance. (4) To save time and money in testing and getting change completed. Shall still want the lighter bodies. While at Nice I saw Lady Boots car which had a broken 3rd. speed wheel. All I could see wrong was that the teeth were ground with sharp corners. R.{Sir Henry Royce} Sharp finish to grinding. | ||