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).
Petrol filter configurations and issues across various car models.
| Identifier | ExFiles\Box 135\2\ scan0072 | |
| Date | 1st August 1925 | |
| R.R. 493A (50m) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. -2- Expl. No. REF. HS{Lord Ernest Hives - Chair}3/LG27. 8.25. (1) Silver Ghost - 40/50 HP. Pressure feed, petrol filter only in tank. (2) 4-wheel brake 40/50 HP. Vacuum feed, petrol filter only in tank. (3) Original 20 HP. Fine monel cloth filter in tank and in carburetter. There were several complaints from which it was assumed that the carburetter filter had been stopped up, but afterwards however, it was proved that it was most probably an air lock. (4) 20 HP. car. Monel cloth in rear tank - 160 mesh filter. (5) E.A.C. Fine gauze filter in the tank and in carburetter. (6) E.A.C. Fine gauze filter in tank, coarse filter in carburetter. (7) 20 HP. Fine filter in tank, coarse filter in carburetter. As we have already stated, we do not have trouble with dirt in the petrol. We take no special precautions as regard straining the petrol. We have never yet seen or heard any reliable information as regards this particular complaint that would enable us to judge whether the filter in the carburetter, either fine or coarse, is going to overcome the trouble. Hs.{Lord Ernest Hives - Chair} | ||