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).
Spring wire section for the SS. Cross Steering Tube ball joint.
| Identifier | WestWitteringFiles\T\March1929-December1929\ Scan111 | |
| Date | 1st May 1929 | |
| BY: FROM DA.{Bernard Day - Chassis Design} Copy to - SS.{S. Smith} HS.{Lord Ernest Hives - Chair} SECRET ORIGINAL DA{Bernard Day - Chassis Design}2/M1.5.29. SS.{S. Smith} CROSS STEERING TUBE. X7425 Herewith we send N. sch. 2884. giving the 1500 lbs. spring on the cross steering tube ball joint, as requested in HS{Lord Ernest Hives - Chair}/RM{William Robotham - Chief Engineer}4/LG23429. It will be noticed that we have a rectangular section for the wire. This is because it gives us the correct stress, and we are not quite certain what can be obtained. Should it only be possible to obtain conventional sizes, for instance such as .312 square, then we suggest that this should be done. On the other hand if it is necessary to obtain a special wire there seems no reason why we should not get the one indicated. .312 would either be slightly too highly stressed, or would have to have a slightly less load. DA.{Bernard Day - Chassis Design} | ||