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).
Letter detailing the average power curve data for ten 75 HP engines.
| Identifier | ExFiles\Box 36\2\ scan 070 | |
| Date | 15th February 1917 | |
| C O P Y R.R. 238 A (400 T) (S.C. 195 15-2-16) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 144c. WEC1/FS{F. Steele}18217. 15.2.17. Messrs. Rolls-Royce, Ltd., Derby. Dear Sirs :- 75 H.P. Engines. The following is an average power curve of ten 75 H.P. Engine as requested by you in letter WOR{Arthur Wormald - General Works Manager}/ET11/B12217. R.P.M. Load lbs. B.H.P. M.E.P. Petrol consumption 1500 111 92.6 108 1400 112.25 87.4 109.5 1350 113.8 86.4 110.8 6.325 gall. .534 lbs h.p. hr. 1300 115.2 83.3 112 1200 116.4 77.6 113 1100 115.35 70.6 112.5 1000 114.5 63.6 111.5 900 113.15 56.8 110.9 The above was taken from engines Nos. 126, 194, 88, 198 168, 176, 66, 56, 184, and 76. These engines were run consecutively on stand No.1, between the 22.1.17 and 28.1.17. Engines 1.75.88, 66, 56 and 76 are engines returned from the White City. Yours truly, | ||