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).
Performance test figures comparing acceleration times for Wraith cars 24.G.VI. and 25.G.VI.
Identifier | ExFiles\Box 6\6\ 06-page221 | |
Date | 17th June 1937 | |
Wraith File. 600 Rm.{William Robotham - Chief Engineer} from Rm{William Robotham - Chief Engineer}/Wym.{G. Harold Whyman - Experimental Manager} 17.6.37. WRAITH CARS 24.G.VI. & 25.G.VI. Camshafts 24.G.VI. E.59919. 25.G.VI. Ex.24268. Performance test figures obtained from the above cars, both weighted to 1 ton 19 cwts. 2 qrs. 21 lbs. At 30 M.P.H. 24.G.VI speedometer reads 7% fast and 25.G.VI speedometer 6% fast. Figures are the average of 3 runs each in outward and inward directions on Shardlow Road. | M.P.H. | OUT | IN | AVERAGE | |---|---|---|---| | | 24.G.VI. | 25.G.VI. | 24.G.VI. | 25.G.VI. | 24.G.VI. | 25.G.VI. | | 10-20 | 4.0 secs | 3.8 secs | 4.4 secs | 4.0 secs | 4.2 secs | 3.9 secs | | 20-30 | 3.8 " | 3.9 " | 4.2 " | 4.0 " | 4.0 " | 3.95 " | | 30-40 | 4.0 " | 4.1 " | 4.6 " | 4.2 " | 4.3 " | 4.15 " | | 40-50 | 4.6 " | 4.8 " | 5.2 " | 5.0 " | 4.9 " | 4.9 " | | 50-60 | 6.6 " | 6.0 " | 7.0 " | 6.3 " | 6.8 " | 6.15 " | | 60-70 | 9.0 " | 9.4 " | 10.2 " | 10.3 " | 9.6 " | 9.85 " | | 10-70 | 32.0 " | 32.0 " | 35.6 " | 33.8 " | 33.8 " | 32.90 " | | TICKNALL HILL | 24.G.VI. | 25.G.VI. | |---|---|---| | | 56.8 secs. | 56.2 secs. | Rm{William Robotham - Chief Engineer}/Wym.{G. Harold Whyman - Experimental Manager} | ||