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).
Two graphs comparing vehicle acceleration performance: Rolls Royce vs Bentley, and High vs Low Axle Ratio on a Phantom.
| Identifier | WestWitteringFiles\Q\December1926-January1927\ 10 | |
| Date | 10th December 1926 guessed | |
| Top Graph: ACCELERATION ROLLS ROYCE V BENTLEY VELOCITY M.P.H. TIME SECONDS. Legend: - 6 1/2 LITRE BENTLEY -- 10 E.X. 15 TOOTH AXLE. --- STANDARD PHANTOM. Bottom Graph: ACCELERATION HIGH V LOW AXLE RATIO VELOCITY M.P.H. TIME SECONDS. Legend: - AXLE RATIO 15/52 -- AXLE RATIO 17/52 Notes: PHANTOM HIGH COMPRESSION 5.2/1 NON STREAMLINE BODY. Left Margin Text: ALL FIGURES DIRECT DRIVE C.O. CLOSED | ||