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 and performance graph for Chrysler valve springs.
| Identifier | WestWitteringFiles\T\2January1929-June1929\ Scan263 | |
| Date | 14th June 1929 | |
| CHRYSLER VALVE SPRINGS. FIG. 1. Stress lbs/sq in. W load. lbs. 105,000 173 78,800 84 48,350 54 27,450 .312" .580 V.C. .862 V.O. 1.762" Δ. Deflection" PARTICULARS ARE: FREE LENGTH 3.300" LENGTH. V.C. 2.750" " V.O. 2.438" MEAN DIA. 1.050" WIRE DIA. (9 S.W.G.) .144" TOTAL NO. OF COILS 10.00 NO. OF EFF. COILS (CALC) 8.750 FIGURE OF MERIT. .872 THERE ARE 2 COILS SOLID EACH END INSTEAD OF 1 AS IN R.R. PRACTICE. Tsm. 6/11/29 [STAMPED TEXT] ROLLS-ROYCE LIMITED M'MENT ROOM 14 JUN 1929 | ||