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).
Telegram suggesting modifications to an engine to reduce speed roar, such as increasing valve spring strength.
| Identifier | ExFiles\Box 48\4\ Scan052 | |
| Date | 3rd November 1921 | |
| R.R. 144A (100B.) SE 867. 9.7.18 MP 193871 ROLLS-ROYCE, LIMITED. Handwritten Reference: X4226 TELEGRAM RECEIVED BY TELEPHONE. References: X4226, X4237, X.4244. x, X.4329 x Time Received: [blank] Date: 3. 11. 21 To: Roycar Derby By: W.B. from: Chichester 2. H.J. Message Body: Hives suggest record Speed roar commences then increase strength valve spring possibly valve closing unsteadily double ports with increased capacity may reduce roar less inboard head and special camshaft FROM: [blank] THIS SHEET MUST BE FILED. | ||