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).
Comparison of cooling system performance between a Chrysler and a Rolls-Royce Phantom II under various speed and throttle conditions.
| Identifier | WestWitteringFiles\U\August1930-November1930\ Scan023 | |
| Date | 22th April 1931 guessed | |
| COMPARISON CHRYSLER AND ROLLS-ROYCE COOLING. 60 M.P.H. Top Water Temp. (1) Phantom II Std. Radiator. Fan etc. All closed. 77°C. Four shutters open. 71°C. (2) Chrysler. Louvred bonnet. 73°C. 30 M.P.H. No comparative tests taken as Chrysler would not run full throttle continuously at this speed due to Activae failure. 45 M.P.H. Full Throttle. (1) Phantom II Std. Radiator. Fan etc. All closed. 98°C. Four shutters open. 89°C. Louvred bonnet. 82°C. (2) Chrysler 72. Louvred bonnet. 82°C. (3) 25 HP. Std. Condition. No ventilation. 92°C. SPEED. MAX SPEED Phantom II. 82.5 S.C. Open. Chrysler 66.19 M.P.H. EX. '35. Latest 5.69 C.R. Trials Car. 64.25 M.P.H. Hg/Sa. | ||