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).
Letter to the Zenith Carburettor Company regarding filter specifications and a request for weight reduction.
| Identifier | ExFiles\Box 44\1\ Scan154 | |
| Date | 2nd June 1927 | |
| /3700 Expl: Dept: Hs {Lord Ernest Hives - Chair} /Rm {William Robotham - Chief Engineer} 2/LG. 2nd. June 1927. Messrs. The Zenith Carb. Co.Ltd., 40-42 Newman Street, London W.1. Dear Sirs, We thank you for your letter of the 1st. inst. We note your remarks with regard to the dia. of the discs. Our mistake was due to confusing it with the Auto-Clean filter which we are also testing. As you probably know, our jets are of the annular type and in consequence, between the cone and its seating, is .002". We therefore prefer the .05 mm. gap, but we do feel that we should get a better filter if the dia. of the discs was increased somewhat. We find you filter weighs 1 1/4 lbs. complete. This is rather heavy for such a unit and we should like to know whether you think you could manage to effect any weight reduction by the use of lighter alloy. Yours faithfully, | ||