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).
Recommendations for modifications to the 25 HP steering system, including oil type and poundage.
| Identifier | ExFiles\Box 106\3\ scan0305 | |
| Date | 5th April 1935 | |
| To Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} Hs{Lord Ernest Hives - Chair}/FD.{Frank Dodd - Bodies}10/KW.5.4.35. 25 HP. Steering. In view of the controversy on 25 HP. steerings we recommend that the following modifications be made. (1) We have proved that Castrol X.L. oil is better in the steering box than Amber A, and recommend the change to be made in production. (2) We consider that the poundage is too high on the cross steering tube and recommend that it be reduced to 6 lbs. + or - 1 lb. It has been the practice of the Test Dept. in the past to set this poundage at 10 lbs. Mx.{John H Maddocks - Chief Proving Officer} has agreed to the reduced poundage, and all present production 25 HP. cars are now being set to the new figure. These two modifications make the steering lighter to handle, without any adverse effect at speed. Hs{Lord Ernest Hives - Chair}/F.Dodd. | ||