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).
On 20/25 steerings, concluding that a gear ratio alteration from recent experiments is not worth standardising.
| Identifier | ExFiles\Box 106\3\ scan0308 | |
| Date | 10th April 1935 | |
| To Sg.{Arthur F. Sidgreaves - MD} from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} x550 Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}15/KW.10.4.35. 20/25 Steerings. Sg.{Arthur F. Sidgreaves - MD}12/E.8.4.35. Further experiments we have now carried out with the shorter pendulum lever indicate that this alteration in gear ratio is of considerably less value than the modifications mentioned in Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}6/KW.6.4.35. At the moment we do not think it is worth recommending for standardisation. We are therefore carrying out the other improvements only on your car. The pendulum lever will be available if you are dissatisfied after trying the car. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||