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).
Comparing the acceleration and maximum speed of Sunbeam and Vauxhall cars.
| Identifier | ExFiles\Box 160\2\ scan0074 | |
| Date | 14th December 1925 | |
| H.R. 4934 (50 M) (D.L) 21. 12-25 J.H.L. EXPERIMENTAL REPORT. -3- Expl. No. REF: Ha/Ru/I/G14.12.25 The Sunbeam acceleration figures are interesting because they shew that though stream-lining can give speed, a large engine will always have an advantage for low speed acceleration. Thus the Vauxhall has better accelerating because it has a 4-litre engine to the Sunbeams 3-litre, though it may be inferior in maximum speed. As regards maximum speeds. Given that the speedo-meters are correct, we consider that there must have been an appreciable amount of wind in the cars favour to give this result. In any case, 117-MC seems to have a body which should be worth study from the point of view of stream-line. We should imagine that the wings are somewhat abnormal. contd :- | ||