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).
Graph showing the average stress range for good carbon steel wire and total static stress variation on valve springs.
| Identifier | ExFiles\Box 158\4\ scan0035 | |
| Date | 6th June 1936 guessed | |
| AVERAGE STRESS RANGE FOR GOOD CARBON STEEL WIRE B. 23. ELASTIC LIMIT STRESS IN THOUSAND POUNDS PER SQUARE INCH TOTAL STATIC STRESS VARIATION ON VALVE SPRINGS. FRANKLIN 52039 REO 3 NA{Mr Nadin} 27 REO 3 AA{D. Abbot-Anderson} 57 OAKLAND 44|280 CHEVROLET 835773 ESSEX - HUDSON NASH 19140 FRANKLIN 52035 NASH x 86461 G.M.T. 065485 NASH 41534 - 84409 VIKING CHEVROLET 836477 & 83639 G.M.T. 065468 G.M.T. 065467 NASH 41535 - 84410 CADILLAC 883326 G.M.T. 065486 & BUICK 18|817. HUPP 78481. HUPP 79480 HUPP 78058 HUPP 78050 BUICK 124583S BUICK 124544S & 1239847. BUICK 181786. STRESS IN THOUSAND POUNDS PER SQUARE INCH. | ||