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).
Parts list and instruction memo for special parts suitable for changeovers on the 40/50 HP chassis side steering tube.
| Identifier | ExFiles\Box 68\1\ scan0180 | |
| Date | 12th October 1926 | |
| C. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} BY/HEB{H. Biraben}1a/M.12.10.26 40/50 HP. CHASSIS. SIDE STEERING TUBE SEC: 7070. (SPECIAL PARTS SUITABLE FOR CHANGEOVERS). Please receive herewith two Blue Prints of each of the following:- F.75839 Spring for Side Steering Tube(1000 lbs/inch Rate) 4 off per chassis. F.75840 Spring for Side Steering Tube(1500 lbs/inch Rate) 4 off per chassis. F.75841 Scheme for Fitting Lower Stressed Springs in Side Steering Tube. 1 off per chassis. F.75842 Modifications to Side Steering Tube. 1 off per chassis. F.75843 Cover for Side Steering Joint. 2 off per chassis. F.75844 End Nut for Side Steering Tube. 2 " " F.75850 Locking Bracket for Side Steering Tube End Nut. 2 off per chassis. F.75851 Cap for F.75850. 2 " " F.75852 Inner Plug for Side Steering Tube. 2 off per chassis. F.75853 Outer Plug for Side Steering Tube. 2 " " Kindly instruct for two sets of each of the above to be produced experimentally, noting that 6 sets of each Spring F.75839/40 have already been ordered by memo BY/HEB{H. Biraben}14/M.8.10.26. copy of which you received. Furthermore, it should be noted that a special Leather Cover F.75843 is required, and we have shown on the drawing the approximate contour of the Steering Joint so that a Blueprint may be sent to the Cover Makers for them to prepare a sample cover. - The parts replaced are as follows: F.71401 Spring for Side Steering Tube(1000 lbs/inch Rate) 4 off per chassis. F.74422 Spring for Side Steering Tube(1500 lbs/inch Rate) 4 off per chassis. F.{Mr Friese} 9876 Cover for Side Steering Joint. 2 " " " F.{Mr Friese} 9875 End Nut for Side Steering Tube. 2 " " " F.{Mr Friese} 4967 Inner Plug for Side Steering Tube. 2 " " " F.{Mr Friese} 4968 Outer Plug for Side Steering Tube. 2 " " " BY/HEB.{H. Biraben} | ||