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).
Test results and failures of connecting rods, valves, and valve springs.
Identifier | ExFiles\Box 27\2\ Scan399 | |
Date | 24th May 1934 | |
-2- CONNECTING RODS. 1. G.R.73610. Broken rod, from the Alta Engineering Co.Ltd. 1. Rohnalite rod. Cadillac "16". 1. Steel rod. unknown. 1. Alum. rod. unknown. VALVES. 1. Silchrome valve off 3-B-IV. Has done about 10,000 miles on 76 octane Ethyl. 24.5.34. 1. K.E.965 valve off B-3 unit. 7. Valves (exhaust) Cadillac, ran 21,000 miles, 15,000 miles in France. The test was carried out on lead. 1. Bentley valve, head broken away. 8 hours endurance, 2 hours at 4,250, 4 hours at 4,000. Ethyl. 1. Bentley valve off 3-B-IV, 10,000 miles in England, 24.5.34. 1. SpectreCodename for Phantom III exhaust valve, head broken away, 12,000 miles. 1. Ex. 1-B. 145. K.E. No record. 2. Valve guides off 58-GN. Constant sticking due to length and thin section. VALVE SPRINGS. 1. Valve spring (Bentley). Old standard 20/25, pulled out, 15,000 miles on Bentley. 1. Valve spring (Bentley). Stiffer type. Broken after 600 miles, fitted wrong free length. | ||