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 sheet detailing the characteristics of Alfa-Romeo valve springs.
| Identifier | ExFiles\Box 124\5\ scan0063 | |
| Date | 27th February 1932 | |
| DETAILS OF ALFA-ROMEO VALVE SPRINGS. TABLE: DETAILS | R.H. LARGE SPRING | L.H. SMALL SPRING MEAN DIA. | 1.480" | 1.118" THICKNESS OF WIRE | .140" | .102" Nº OF COILS. | 10 3/4 | 13 2/3 FREE LENGTH | 2.850" | 3.000" LOAD WHEN COMP TO 1.864" | 19 1/2 LBS. | 11 1/2 LBS. LOAD WITH VALVE OPEN. | 26 1/2 LBS. | 16 1/2 LBS. SIDE NOTE: {VALVE CLOSED} VALVE LIFT. .305" STAMP: PRINT ROOM, 27 FEB 1932, DEPT | ||