Lower axle ratio for the 20/25 model.
| Identifier | ExFiles\Box 30\1\ Scan133 | |
| Date | 9th March 1935 | |
| -2- Hs {Lord Ernest Hives - Chair} /RM. {William Robotham - Chief Engineer} Wor {Arthur Wormald - General Works Manager} 2/R.9.3.35. 20/25. Paragraph 4, page 5 - lower axle ratio. Wor. {Arthur Wormald - General Works Manager} | ||
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).