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).
High-pressure valve spring for the Phantom Chassis rear hydraulic shock damper.
| Identifier | ExFiles\Box 55\4\ Scan011 | |
| Date | 2nd February 1927 | |
| C. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} X235 BY/HEB{H. Biraben}8/M.2.2.27. PHANTOM CHASSIS. REAR HYDRAULIC SHOCK DAMPER SEC:7150. HIGH PRESSURE VALVE SPRING TO GIVE 80 LBS. AT BALL PIN. RECEIVED STAMP: FEB 1927 Hs{Lord Ernest Hives - Chair} Further to our memo' BY/HEB{H. Biraben}11/M.6.1.27, also memos' Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}1/LG19.1.27, and Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}2/LG1.2.27, herewith please receive one print of:- F.76548 High Pressure Valve Spring(80 lbs.on Ball Pin) 2 off per chassis. Kindly produce and fit to Experimental Chassis. This Spring has been calculated to give 80 lbs. on the Ball Pin in proportion to Springs F.76429 which gives 90 lbs. and F.75148 which gives 62 1/2 lbs. We are ordering up this Spring for Production for "D2" Series Rear Shock Dampers. BY/HEB.{H. Biraben} HPB | ||