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).
Required spring load for the cross steering tubes on 40/50 HP and 20 HP cars.
| Identifier | ExFiles\Box 67\3\ scan0021 | |
| Date | 14th December 1926 | |
| To EY/HEB.{H. Biraben} from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} c. EY. V5425 Hs{Lord Ernest Hives - Chair}/Rml/T14.12.26. EY4/H14.12.26. x5425 With reference to the spring load required in the cross steering tubes of the two cars. We find that on the 40/50 HP. we require 1250 lbs. load on the ball. On the 20 HP 500 lbs. load. We anticipate that these will be the loads which will actually go on the cars on production and should therefore like you to get out the necessary springs and details for the modifications required to get these springs in. However, until we get the consent of W.W., it would not be advisable to order too much material. If you will let us have the modifications for the incorporation of these springs, we will send them to R.{Sir Henry Royce} for approval. We suggest that provision should be made for one or two .010" washers to be fitted behind the springs to get exact adjustment of the friction, as there will be variation between different cars. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||