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).
Document detailing spring rating data and a corresponding diagram of a gear and drum assembly.
| Identifier | ExFiles\Box 124\5\ scan0047 | |
| Date | 24th February 1938 guessed | |
| SPRING RATING. - UP TO '040" DEFLECTION. TABLE: LOAD LB | DEFLECTION FROM FREE POSITION - INS X | Y | Z 0 | 0 | 0 | 0 2 | .002 | .003 | .005 4 | .009 | .008 | .009 6 | .015 | .013 | .015 8 | .019 | .019 | .019 10 | .024 | .026 | .024 12 | .029 | .029 | .029 14 | .033 | .033 | .032 16 | .037 | .038 | .036 DIAGRAM: GEAR. DRUM 1.7725 RAD 1.494 RAD SPRINGS '030" THICK. SEGMENTS .210" | ||