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).
Results of a 2-hour acceptance test for an E.XV1 engine, noting power, consumption, and system performance.
| Identifier | ExFiles\Box 42\1\ Scan107 | |
| Date | 14th January 1927 | |
| To R.{Sir Henry Royce} from Hs{Lord Ernest Hives - Chair}/VH. c. to BJ. Wor.{Arthur Wormald - General Works Manager} c. to RG.{Mr Rowledge} E.{Mr Elliott - Chief Engineer} c. to EY. X8214 HS{Lord Ernest Hives - Chair}/VH1/LG14.1.27. E.XV1. Y4114 This engine has completed its 2 hrs. acceptance test for the A.I.D. Silencers were fitted. Speed .................... 2500 r.p.m. Power at commencement ...... 438 B.HP. Power at conclusion ........ 438 B.HP. Full throttle power last 5 mins. . 495 B.HP. Oil consumption - average .... 18 pts/hr. Induction system. Four E.Vlll carburettors were fitted to 'loop' pipes connecting the ends of the cast-in induction pipes. This is the best we can do, without fitting a supercharger. The power for the run was somewhat in excess of that arranged for (9/10ths. of 475 = 428 B.HP) but a more stable condition was arrived at with the throttles slightly further open. Even in this position the swirling action set up in the induction pipes common to A.{Mr Adams} and B. blocks and C. and D.{John DeLooze - Company Secretary} blocks, would cause a condition of weakness to exist at intervals at some point along one of the blocks. As it was necessary to enrichen the mixture to prevent the engine cutting out at these periods, petrol consumption figures were necessarily on the heavy side. Oil consumption. The pistons in use E.26260 have oil holes just below the top set of piston rings, and we have experienced excessive contd :- | ||