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).
Specification chart for Delco low-pressure valve spring ratings for 'C' and 'G' types, detailing load and deflection for outer and inner springs.
Identifier | ExFiles\Box 28\1\ Scan223 | |
Date | 3rd February 1931 | |
DELCO VALVE SPRING RATINGS LOW PRESSURE. 'C' & 'G' TYPES. OUTER SPRING LOAD Lb. | DEFLECTION - INS. 'C' | 'G' 0 | — | — 10 | .045 | .025 20 | .085 | .049 30 | .125 | .072 40 | — | .095 50 | — | .118 INNER SPRING LOAD Lb. | DEFLECTION - INS. 'C' | 'G' 0 | — | — 2 | .135 | .135 4 | .269 | .270 5 | .338 | .335 3-2-31. | ||