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).
The specifications for front and rear springs.
| Identifier | ExFiles\Box 16\7\ Scan269 | |
| Date | 26th May 1930 | |
| To RHC.{R. H. Coverley - Production Engineer} From Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} V7410. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}4/MJ.26.5.30. 19-EX. FRONT SPRINGS. 950 lbs. as polished by W. Bell. Rubber buffer F.79511 cut down to 1.00" depth. REAR SPRINGS. 1300 lbs. Polished springs fitted and rear shock dampers fitted. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||