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).
List of part numbers and load specifications for front and rear springs on the 20 HP model.
| Identifier | ExFiles\Box 68\2\ scan0197 | |
| Date | 24th June 1927 guessed | |
| contd :- -2- 20 HP. Front. UP. F.75079 Load 43-47 lbs. Down. F.54807 Load 58-62 lbs. Rear. Up. F.75168 Free length .485 Load 40-45 lbs. Down. F.75148 Load 58-62 lbs. New piece nos. will require issuing for the various lengths of springs. Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson} | ||