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 the simultaneous completion of aluminium and cast-iron Bentley high-compression cylinder heads for comparative testing of detonation characteristics.
| Identifier | ExFiles\Box 86\1\ scan0052 | |
| Date | 4th January 1934 | |
| To RHC.{R. H. Coverley - Production Engineer} from Hs{Lord Ernest Hives - Chair}/CTS.{C. Trot Salt - Carburation} X 219 Hs{Lord Ernest Hives - Chair}/CTS{C. Trot Salt - Carburation}12/KW4.1.34. Bentley High Compression Cylinder Heads. An aluminium cylinder head is at the moment being produced to LeC.3645, 3653, with valves to E.B.1247 - 8. At the same time a cast-iron head is in hand to the same piece numbers. An inlet valve is incorporated, the size of which has never before been tested. As it is desirable to get an accurate idea of the detonation characteristics of the alum. head as compared with cast-iron, we would like both heads completed at the same time. Hs{Lord Ernest Hives - Chair}/C.T. Salt. | ||