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).
Testing of specially hardened ignition distributor cams using the 'Cloudburst' process.
| Identifier | ExFiles\Box 65\1\ scan0231 | |
| Date | 30th October 1929 | |
| RHC.{R. H. Coverley - Production Engineer} from EFC. c. Hs{Lord Ernest Hives - Chair}/AJL. X.7680. EFC5/AD30.10.29. IGNITION DISTRIBUTOR CAMS SPECIALLY HARDENED BY "CLOUDBURST" PROCESS Herewith we hand to you four ignition distributor cams which have been specially hardened for us by Messrs. B & S. Massey Ltd. Manchester, by their "cloudburst" process. We are anxious to compare th running qualities of these with our standard cams, therefore will you please arrange to have these cams placed on the distributors on four experimental cars as, and when convenient. Will you please suitably mark these for identification purposes and notify us as to the experimental cars on which these are placed. ✓ ✓ Fitted to 18Ex, 19Ex, 22Ex and one other. EFC. H.E.W. | ||