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).
Requesting a duralumin rotor for a Graham Supercharger due to high-speed testing concerns.
| Identifier | ExFiles\Box 140\1\ scan0074 | |
| Date | 12th November 1934 | |
| x209 To RHC.{R. H. Coverley - Production Engineer} Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}17/KW.12.11.34. We are going to run the Graham Supercharger at considerably higher speeds than those used on the car. We are rather afraid the rotor will burst. Will you therefore please make us a rotor from duralumin which we can use. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||