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).
Secret memo detailing design changes for the Spectre radiator, including associated drawing numbers.
| Identifier | ExFiles\Box 94\3\ scan0011 | |
| Date | 17th June 1935 | |
| STEADMAN x340 To BY.{R.W. Bailey - Chief Engineer} from E/JNR.{Charles L. Jenner} SECRET. E/JNR.{Charles L. Jenner}1/HP.17.6.35. c. Wor.{Arthur Wormald - General Works Manager} Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} RHC.{R. H. Coverley - Production Engineer} SpectreCodename for Phantom III Radiator. We send you herewith:- LeC.4504. LeC.4533. showing the design of the new radiator with shutters. The finish of the radiator is to be in staybrite instead of chromium. The triangular stay between the radiator and the dashboard has been increased in diameter because we notice the present ones which are .5 diameter are becoming bent, due to being used as a rest when working on the engine. The pipes between the top tank and top water rails are now 1.25 diameter. The calorstat and operation are much the same as Phantom. It will be noticed that the shutters are unbalanced so that they will not close due to wind pressure at high speed. This has been found necessary on the Bentley. Drawings to BY.{R.W. Bailey - Chief Engineer} Blueprints to RHC.{R. H. Coverley - Production Engineer} E/JNR{Charles L. Jenner} | ||