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 and oil filtration systems, including a reference to Flexofiltration Limited.
| Identifier | ExFiles\Box 135\2\ scan0173 | |
| Date | 19th December 1938 | |
| 1138 also 1139 Sg.{Arthur F. Sidgreaves - MD} from Rm.{William Robotham - Chief Engineer} Rmll/R.19.12.38. re: Flexofiltration Limited. With reference to this type of petrol filter, particulars of which have been handed on to me by E.{Mr Elliott - Chief Engineer}, this is almost exactly the type we used to fit on our petrol system. The only justification for changing over at the moment would be one of price, and I am asking Leslie to go into the matter. With regard to oil filtration, we have recently abandoned full flow filters for the lubrication system and have adopted a by-pass filter. The filter we have just standardised will restore black oil that has done several thousand miles in a crankcase to its original amber colour in 100 miles' running, and will last 5,000 miles before the element requires changing. In this respect, we consider that it is superior to any disc type filter of the "Flexo" variety. Rm.{William Robotham - Chief Engineer} | ||