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).
Dynamometer test results for an EAC V series engine comparing different silencers.
| Identifier | ExFiles\Box 69\4\ scan0281 | |
| Date | 14th February 1925 | |
| X8771 Hs{Lord Ernest Hives - Chair}/ACL/T14.2.25. To EP.{G. Eric Platford - Chief Quality Engineer} from Hs{Lord Ernest Hives - Chair}/ACL. c. Mr. McMillan. S E C R E T. E.{Mr Elliott - Chief Engineer} A.{Mr Adams} C. X.8771 X624 Re DYNAMOMETER TESTS OF EAC. V ENGINES. Attached are figures for the power output of EAC. V Series engine on dynamometer. The first set of readings were taken with the standard 40/50 silencer, so the "cut-out closed" figures will be somewhat lower than obtained with the E.A.C. silencer. Not having at hand any readings taken with the E.A.C. silencer on the dynamometer, we give a second curve in which the power, with cut-out closed, at rear wheels is calculated from test bed results. We are preparing a specification for dynamometer tests which will be sent out shortly. DYNAMOMETER CURVES. 40/50 SILENCER. CALCULATED FOR E.A.C. SILENCER. Engine R.P.M. HP. C/O Open. C/O Closed. HP. C/O Closed. 2500 81 - 64.5 2250 84 64 70 2000 82 67.5 70 1750 76.25 67 67 1500 67.5 61.5 61.5 1250 58.5 54 56 1000 47.5 44 46 750 35.5 34 34.5 500 24.75 24 24 Hs{Lord Ernest Hives - Chair}/ACL. | ||