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).
Summary discussing engine overheating issues at low speeds and radiator performance.
| Identifier | ExFiles\Box 24\4\ Scan295 | |
| Date | 28th November 1924 | |
| R.R. 493A (20H) (D.A. 652 20-3-24) J.H.D. -2- EXPERIMENTAL REPORT. Expl. No. REF HS{Lord Ernest Hives - Chair}7/LG28.11.24. Summary of test - contd :- over-heating at low speeds can be improved by ensuring that the fan is functioning properly - or larger radiator. There is also a distinct gain with increased ventilation at low speeds. Tests on the new fans are not yet completed, but as far as they have gone, it does not appear that we shall gain any marked advantage. The reason we compare unfavourably with other cars is the fact that we have a large capacity engine which supplies a lot of heat to the cooling water, also the face area of our radiators is small. Hs.{Lord Ernest Hives - Chair} | ||