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 message comparing the horsepower of water-cooled and air-cooled single-cylinder engines.
| Identifier | ExFiles\Box 173\1\ img267 | |
| Date | 10th May 1933 | |
| ROLLS-ROYCE LTD. TELEGRAM RECEIVED BY TELEPHONE. NO. 144X. 1/2 OCS(A) (85826-10-5-33) 9.3720.S. Time Received: Date: To: By: from: water cooled single cylinder fifty per cent more h-p than similar aircooled leaving wet but Saturday next FROM | Robotham THIS SHEET MUST BE FILED. | ||