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).
Analysis of fan value, mixture strength, and radiator capabilities of Hispano and 40/50 HP models at varying speeds.
| Identifier | ExFiles\Box 24\4\ Scan284 | |
| Date | 21th November 1924 guessed | |
| -3- explains why the value for the fan in this car is considerably lower than that obtained by method 'A' when the bonnet was without ventilation. We consider for our standard systems 30% is better value. Effect of mixture strength - Hispano. Running with the mixture fully strong as opposed to maximum weakness without loss of power decreases necessary to dissipate heat generated by 8.2% or apparently decreases heat lost to cooling water by this amount. Effect of decreasing speed on capabilities of Hispano & 40/50 HP. radiators to deal with the heat generated. At 30 m.p.h. under similar conditions the Hispano is only 5.2% better off than the 40/50 HP. with large matrix. At 20 m.p.h. this difference is increased to 11% so that we are worse off as our road speed falls. COPIED | ||