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).
Diagram illustrating a modification to water flow within a radiator.
| Identifier | ExFiles\Box 11\3\ 03-page198 | |
| Date | 14th July 1930 guessed | |
| The holes to be drilled at this angle instead of right angle so as to throw the water on to the top of the radiator first | ||