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).
Disappointing radiator test results comparing new and old tube types.
| Identifier | ExFiles\Box 44\2\ Scan189 | |
| Date | 20th July 1928 guessed | |
| -2- it comes to hand. Test on the radiator with larger gaps between the tubes has been rather disappointing. We cannot detect much difference between the restriction of the new and old type tubes. We are repeating the tests before we send you the radiator. Rm.{William Robotham - Chief Engineer} | ||