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).
Comparative test document detailing engine and air temperatures for vehicles fitted with a grille versus radiator shutters.
| Identifier | ExFiles\Box 87\1\ scan0094 | |
| Date | 19th September 1934 | |
| xno? To Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} Hs{Lord Ernest Hives - Chair}/FD.{Frank Dodd - Bodies}23/KW.19.9.34. Comparative Tests with Grille and Radiator Shutters. Comparisons have been taken with 2-B-IV fitted with standard radiator and shutters, and B-23-AE fitted with thermostat to engine, and radiator grille, with the following results :- Carburetter Intake Temp. oC. Engine Water Temp. oC. Air Temp. B-23-AE Grille 32oC. 85oC. 16oC. 2-B-IV Shutters 48oC. 80oC. 16oC. Hs{Lord Ernest Hives - Chair}/F.Dodd. DRIVING CONDITIONS. FAST TOURING SPEED | ||