Comparison of time-velocity performance curves for a Bentley Speed Model and a Vermorel 12-25.
| Identifier | ExFiles\Box 113\2\ scan0088 | |
| Date | 23th March 1925 guessed | |
| Left Graph: 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 Graph: 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: 6 photo stats | ||
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).