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).
Cooling system tests conducted at Brooklands on the 19-EX, 18-EX, and Phantom II cars.
| Identifier | ExFiles\Box 29\3\ Scan200 | |
| Date | 25th June 1930 | |
| X788. To R.{Sir Henry Royce} from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} c. Sg.{Arthur F. Sidgreaves - MD} Wor.{Arthur Wormald - General Works Manager} c. Da.{Bernard Day - Chassis Design} E.{Mr Elliott - Chief Engineer} c. By.{R.W. Bailey - Chief Engineer} Rg.{Mr Rowledge} c. Lr.{Mr Ellor} HS{Lord Ernest Hives - Chair}/Rml/MJ25.6.30. X.788 X.766 X.7250 X.7260 X.7220 X.7731 X.7772. BROOKLANDS TESTS JUNE 17th to 20th 1930. We took 19-EX car to Brooklands with a view to checking over the efficiency of the cooling system at speed. We have had one or two complaints of Phantom II cooling being inadequate in Italy etc. even with louvred bonnets. The conditions there appear to be somewhat exceptional as the owners were able to drive for a number of miles all out and without easing up, commence a 3,000 ft. climb. However, we ourselves are not altogether satisfied that we have made the best possible use of the Phantom II system, as our cars in France have not been free from overheating trouble. Whilst we were on the track, we borrowed 18-EX as this has been quoted as being a well cooled car, and obtained some figures for it. We also had the American car at the same time. TESTS OF THE COOLING SYSTEM - MODIFICATIONS TO STANDARD. It was at once apparent that the car cannot be run all out on the track with no bonnet ventilation and not overheat if the atmospheric temperature is above 25°C. No car we have made so far would do this and we should not expect | ||