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).
Experiment to test the placement of a Phantom III oil cooler in the water system of a Wraith engine.
| Identifier | ExFiles\Box 131\1\ scan0271 | |
| Date | 1st February 1937 | |
| SECRET. /1044 To Da.{Bernard Day - Chassis Design} from Rm{William Robotham - Chief Engineer}/CTS.{C. Trot Salt - Carburation} Rm{William Robotham - Chief Engineer}/CTS{C. Trot Salt - Carburation}3/1.2.37. Wraith. 114 Experiment with the Oil Cooler in the Water System. TEST. A Phantom III oil cooler placed between the water pump and the radiator, on a standard 25/30 engine. A venturi was placed between the outlet from the head and the top tank of the radiator, to measure the water circulation. The outlet water temperature from the head was maintained at 95° C. OBJECT OF TEST. To find out when an oil cooler is so placed, if and what restriction it would offer to the water circulation. RESULT. See graph No. S.21. Rm{William Robotham - Chief Engineer}/C.T.Salt. | ||