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).
Notes on modifications to the gearbox breather and magneto drive.
| Identifier | ExFiles\Box 29\2\ Scan069 | |
| Date | 11th November 1923 guessed | |
| - 9 - (14). Gearbox Breather. This has been removed and replaced by a small hole drilled in end of change gear tube on end removed from brake lever. (15). Magneto Drive. Still using old type on plea that new scheme is noisy as they are able to produce it. BY.{R.W. Bailey - Chief Engineer} | ||