Acceleration test figures for vehicle 28-EX, including 3rd speed data and test conditions.
| Identifier | ExFiles\Box 11\5\ 05-page026 | |
| Date | 13th April 1934 | |
| 13.4.34. ACCELERATION FIGURES - 28-EX. Bourges Road. No wind & dry. Air Temp 6°C. Oil Temp 80°C. Water Temp 75°C. TIME (SECS) M.P.H. OUT. IN. OUT. IN. AVERAGE. 10 - 20 4.7 4.4 4.6 4.6 4.57 20 - 30 3.7 4.0 3.8 4.4 3.97 30 - 40 5.0 5.0 5.2 5.2 5.1 40 - 50 5.4 6.4 6.0 5.8 5.9 50 - 60 7.4 8.0 7.4 7.8 7.65 60 - 70 11.4 10.6 10.6 11.2 10.95 10 - 20 4.7 4.4 4.6 4.6 4.57 10 - 30 8.4 8.4 8.4 9.0 8.55 10 - 40 13.3 13.4 14.4 14.0 13.82 10 - 50 19.0 19.4 20.0 19.8 19.55 10 - 60 27.4 28.4 27.4 27.8 27.75 10 - 70 40.0 40.0 39.2 39.4 39.51 3RD. SPEED ACCELERATION FIGURES. 10 - 20 3.8 4.0 3.6 3.8 3.8 20 - 30 2.6 3.0 3.4 2.8 2.95 30 - 40 4.2 4.2 4.2 4.0 4.15 40 - 50 3.8 4.2 3.8 4.2 4.00 11 x 41 Axle Ratio. Dunlop Silent Tread 7 X 19, Type '90' Tyres. G.W.H. | ||
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).