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).
Proposed improvements to the Spectre Radiator, including thermostatically operated shutters, an anti-spill valve, and a vacuum prevention valve.
| Identifier | ExFiles\Box 94\3\ scan0010 | |
| Date | 13th May 1935 | |
| X340 Rm{William Robotham - Chief Engineer} SECRET. To Sg.{Arthur F. Sidgreaves - MD} and Wor.{Arthur Wormald - General Works Manager} from E.{Mr Elliott - Chief Engineer} E.3/HP.13.5.35. c. Hs.{Lord Ernest Hives - Chair} By.{R.W. Bailey - Chief Engineer} RHC.{R. H. Coverley - Production Engineer} F/JNR.{Charles L. Jenner} E/EV.{Ivan Evernden - coachwork} re SpectreCodename for Phantom III Radiator. In equipping the radiator with thermostatically operated shutters we are working on a scheme where we hope to use a bellows isolated from the heat, and operated by an inverted bowl. With this the shutters can be made to operate with precision between fairly close temperature limits, from fully opened to fully closed. We are also incorporating a Camel anti spill valve for the overflow but arranging an internal overflow pipe carried up inside a steam dome within the mascot base, arranged on the dummy radiator cap. We are, therefore, making some use of this space to maintain a higher water level above the matrix tubes. The internal radiator filler will act as its own level limiting device. To prevent collapse of the radiator tank due to formation of vacuum on cooling, we propose to incorporate a very small and simple loaded ball valve in some convenient position, possibly on the steam dome. E.{Mr Elliott - Chief Engineer} | ||