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).
Development and testing of pressure cooling systems in car radiators.
| Identifier | ExFiles\Box 131\1\ scan0308 | |
| Date | 3rd September 1937 | |
| By.{R.W. Bailey - Chief Engineer} from Rm.{William Robotham - Chief Engineer} c. to Hs.{Lord Ernest Hives - Chair} c. Da.{Bernard Day - Chassis Design} c. Mx.{John H Maddocks - Chief Proving Officer} 1114 also 300B PRESSURE COOLING While pressure cooling may be desirable where power weight ratio is of major importance, it is obviously a development that wants treating with considerable discretion. We have quite enough service troubles without adding burst radiators to the list. However, all P.III's are running with a potential radiator pressure of 2-3 lbs/sq.in., and in many instances due to blocked up matrices, must have survived a large number of hours functioning continuously at this pressure. We do not recollect having heard of a leaking Ph.III. radiator. Therefore, with a view to getting experience, we are running several cars about with higher pressures than normal. Rm.{William Robotham - Chief Engineer} | ||