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 maximum oil pressures for the 'SS' engine when starting from cold.
| Identifier | ExFiles\Box 14\1\ Scan011 | |
| Date | 19th February 1929 | |
| To E.{Mr Elliott - Chief Engineer} from Hs.{Lord Ernest Hives - Chair} x7000 Hs{Lord Ernest Hives - Chair}7/LG19.2.29. 'SS{S. Smith}' OIL PRESSURES. +7010 With reference to E1/M15.2.29. On starting up the SS.{S. Smith} engine from cold and running at approx. 500 r.p.m. the oil pressures attain the following max. values :- High............. 32.0 lbs/sq.in. Intermediate..... 16.0 " " " Low.............. 5.5 " " " It is necessary for the engine to run approx. three minutes before these values are attained. Hs.{Lord Ernest Hives - Chair} | ||