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).
Radiator cooling issues on Phantom I & II models and the move to a more efficient square tube design.
| Identifier | ExFiles\Box 24\5\ Scan330 | |
| Date | 18th September 1930 | |
| To Ag. From Hs.{Lord Ernest Hives - Chair} c. to Cor. c. to C. c. to De. c. to My. X766. Hs.{Lord Ernest Hives - Chair}1/M.18.9.30. x766 x7050 re. Phantom - Cooling. Replying to Sga/M16.9.30. It is correct that the serious troubles with stopped up radiators occurred on Phantom I. At the time the troubles were reported from outside we had just started to deliver Phantom II's with similar radiators. As the conditions were the same there was no reason why the Phantom II cars should not have the same fault. It was therefore decided to adopt a wider gap between the tubes immediately. Forty to fifty Phantom II cars were delivered with the small gap tubes. From the tests we have made, we agree that the square tube radiator promises to be a much more efficient type than the present standard. We are making every endeavour to complete one of the improved square tube radiators as early as possible. Hs.{Lord Ernest Hives - Chair} | ||