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).
Blueprint showing modifications to standard valves for noise tests on J III shock dampers.
| Identifier | ExFiles\Box 105\3\ scan0248 | |
| Date | 6th July 1932 guessed | |
| UNDERCUT. L.P. LEAK TO MASK. MASK. BLANK H.P. LEAKS L.P. LEAK MODIFICATIONS MADE TO STANDARD VALVE. 1 MASK. BARREL-MASK VALVE 2 MASK. PLATE MASK VALVE. 3 VALVE NOISE TESTS. J III SHOCK DAMPERS - N.SGN 3405 | ||