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 failure and subsequent modification of an Enots petrol filter fitted to car 12-EX.
| Identifier | ExFiles\Box 44\1\ Scan214 | |
| Date | 25th June 1928 | |
| Hs{Lord Ernest Hives - Chair}/GWH{George W. Hancock - Head Chateauroux}2/LG25.6.28. RE. ENOTS PETROL FILTER. This filter which has been fitted to 12-EX was a failure whilst the car was in France. It became choked up with fine sand and would not allow sufficient petrol to pass to keep the engine running. We have since altered it by drilling holes in the bottom washer so as to allow the trapped air to escape also made fine slots in the top washer to get over the same effect. We are of the opinion that the grooves in the plate washers are too large which allow the sand to collect instead of falling to the bottom of the glass cover. The glass having cracked causing a bad leak of petrol, it became necessary to take it off. This has been caused by a too tight a fit of the glass in the recess. Hs{Lord Ernest Hives - Chair}/G.W.Hancock. | ||