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).
The change of material for the Enots petrol filter element from duralumin to brass.
| Identifier | ExFiles\Box 44\1\ Scan278 | |
| Date | 26th January 1929 | |
| To BY.{R.W. Bailey - Chief Engineer} from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} V3780 Hs{Lord Ernest Hives - Chair}/RmL/LG26.1.29. ENOTS PETROL FILTER. Y4037 We are asking Messrs. Benton & Stone to supply brass plates in their filtering element instead of duralumin because the brass plates can be made thinner than those in duralumin. This will give us 65% greater area of xxxxxx filtering medium for the same weight as the Zenith. We hand you herewith the Enots filter as we propose it should be fitted on production with the exception mentioned above. We will let you have the correct filtering element in a week or so which will be the final model for production. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||