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).
Query about the position of experimental lower gears for the 20 HP model, with handwritten notes on gear ratios.
| Identifier | ExFiles\Box 6\4\ 04-page175 | |
| Date | 13th January 1927 | |
| S/H Hm.{Capt. W. Hallam - Head Repairs} X5310 C3/013.1.27. 20 h.p. GEARBOX Will you please let me know the position in regard to the lower gears which I understand you are experimenting with on the 20 h.p. C. Standard 4.54 2d Ratio 4.70 | ||