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).
Carburetter performance tests comparing speed, acceleration, and consumption at Brooklands.
| Identifier | ExFiles\Box 155\1\ scan0129 | |
| Date | 13th March 1934 | |
| X788 13. 3. 34 13-G-IV/3.34 19-G-IV. CARBURETTER TESTS ON BROOKLANDS. Carburetter. Lap Speed Half Mile. S.U. 69.66 M.P.H. 70.31 M.P.H. R.R. Horizontal 70.0 " 72.58 " R.R. Standard 66.04 " (65.45 " ) Accelerations. 10-30 M.P.H. 10-60 M.P.H. S.U. 9.3 secs. 29.1 secs. R.R. Horizontal 9.06 " 28.96 " R.R. Standard 9.73 " (33.16 " ) Consumptions. Half Gallon Capacity Tests. M.P.H. Speedo. S.U. R.R. Horizontal R.R. Standard 30 5% fast 20.702 M.P.G. 18.556 M.P.G. 22.75 M.P.G. 40 4.5% " 17.238 " 17.75 " (Track closed 6 pm) 50 4% " 15.33 " 15.21 " 17.102 M.P.G. 60 5% " 14.0 " 13.886 " 14.794 " 70 5% " 12.63 " 12.408 " (Weather prevented) Full Throttle 11.692 " 11.646 " 12.568 M.P.G. Acceleration and over-run tests 10-30-10-40-10-50 M.P.H. 19.5 M.P.G. 20.338 M.P.G. 23.862 M.P.G. During Standard Carburetter tests weather became very rough, attaining gale force at times as shown by the figures bracketed. G.H. Ratcliffe. | ||