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).
Instructions for alterations to the rear and front hydraulic shock dampers for the 20/25 HP chassis.
| Identifier | ExFiles\Box 105\3\ scan0221 | |
| Date | 26th November 1931 | |
| c. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} Y5520. BY/HEB{H. Biraben}9/M.26.11.31. 20/25 HP. CHASSIS. REAR HYDRAULIC SHOCK DAMPER SEC:7150. FRONT 7160. In accordance with your memos' Hs{Lord Ernest Hives - Chair}/Rml/MJ.12.11.31, and Hs{Lord Ernest Hives - Chair}/Rml/MS.14.11.31, kindly receive herewith instructions further to alterations 986 & 994/F.sc. by which we gave particulars of the Damper Loads for Low Rating Springs. SEC:7150. - To suit Standard or Stiffer Springs.- F.81403 Joint Washer(Low Pressure). 2 off, replacing F.79930. For all information work to L.O.P. F.57888. SEC:7160. - To suit Low Rated Springs.- F.58435 Valve(High Pressure). 2 off, added with letter 'E'. To suit Standard or Stiffer Springs.- F.79929 Joint Washer(High pressure). 2 off, replacing F.79928. F.81403 " (Low " ). 2 " " F.79929. F.83169 Valve Spring. 4 " " F.57605. F.74570 Valve(Low Pressure).- the letter 'E' deleted. F.56916 " (High " ).2 off, the letter 'E' deleted, and substituted by letter'D'referring to note,-"For use with standard and stiffer type springs only". 'D'F.74570 Valve 4 off, deleted. For all other information work to L.O.P. F.57908. We attach herewith one Blue Print of:- 43 F.58345 Valve - High Pressure. 2 off. BY/HEB.{H. Biraben} | ||