Comparing the performance of a Bentley car with a Weyman body against a 20 HP Rolls-Royce (G.11).
| Identifier | ExFiles\Box 21\2\ Scan002 | |
| Date | 22th September 1924 | |
| R.R. 402A (40 H) (SL 42 12-7-23). J.H., D. {John DeLooze - Company Secretary} (3805 EXPERIMENTAL REPORT. Exptl. No. REF: Hs {Lord Ernest Hives - Chair} 1/LG22.9.24. To R. {Sir Henry Royce} From Hs. {Lord Ernest Hives - Chair} c. to CJ. BJ. c. to E. {Mr Elliott - Chief Engineer} DA. {Bernard Day - Chassis Design} c. to BY. {R.W. Bailey - Chief Engineer} Wor. {Arthur Wormald - General Works Manager} c. to RG. {Mr Rowledge} BENTLEY CAR. Mr. Minchin of the P. and R. {Sir Henry Royce} Co., called at the Works the other day and kindly let us have a run on his Bentley Car fitted with a Weyman all-weather body. We found that the speedometer fitted to the car was reading 10% high at 50 m.p.h. From the short test we were able to carry out, we obtained the following results :- Trial of Bentley - open-touring Weyman body. Balloon tyres - rear only. Max. speed 61 m.p.h. - G.11. 60 m.p.h. Average acceleration. M.P.H. Top. | Bentley. | G.11. 20 - 50 | 1.41 ft/sec2 | 1.75 ft/sec2 20 - 30 | 1.75 " | 2.1 " 30 - 40 | 1.55 " | 1.80 " The maximum speed was taken over a straight piece of road - just over half a mile in length. Given a longer run, or on a slight down grade, we think the Bentley would reach a higher maximum speed than the 20 HP. R-R. {Sir Henry Royce} It will be seen however, that for acceleration up to 50 m.p.h., the 20 HP. would give a better performance. Hs. {Lord Ernest Hives - Chair} | ||
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).