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).
Specifications for rear shock damper springs including high and low pressure values.
| Identifier | ExFiles\Box 55\4\ Scan380 | |
| Date | 3rd July 1929 guessed | |
| SHOCK DAMPERS. S.S. REAR. F.76548 - spring used on both H.P. and L.P. valves. H.P. spring compressed to .965" L.P. " " " 1.115" | Spring No. | High press: lbs. | Low press: lbs. | |------------|------------------|-----------------| | 1 | 88 | 46 | | 2 | 87 | 46 | | 3 | 84 | 42 | | 4 | 81 | 44 | | 5 | 86 | 45 | | 6 | 81 | 43 | | 7 | 87 | 45 | | 8 | 90 | 47 | | 9 | 87 | 47 | | 10 | 85 > | 44 | | ||