Comparative velocity curve analysis for the Bentley Speed Model and the Vermorel 12-25, critiquing data from 'The Motor' magazine.
| Identifier | ExFiles\Box 73\3\ scan0302 | |
| Date | 3rd February 1925 guessed | |
| Left Chart: THE MOTOR 3/3/25. ROAD SPEED M.P.H. TIME SECS. BENTLEY SPEED MODEL. THIS TIME VELOCITY CURVE CONSISTS OF TWO STRAIGHT LINES JOINED TOGETHER BY A CURVE. THIS IS MOST IMPROBABLE. Right Chart: THE MOTOR 17/3/25. ROAD SPEED M.P.H. TIME SECS. VERMOREL 12 - 25. THE VERMOREL, LIKE THE RENAULT, APPEARS TO HAVE A CONSTANT ACCELERATION FROM 10 TO 53 M.P.H. WE HAVE SHEWN WHAT SORT OF A H.P. CURVE THIS NECESSITATES. Handwritten note on far right: 6 Photos 5/7/26 | ||
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).