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).
Table of 3rd gear acceleration times for various speed ranges.
| Identifier | ExFiles\Box 11\4\ 04-page068 | |
| Date | 1st July 1932 | |
| 3RD. GEAR ACCELERATION 19-EX. 1.7.32. M.P.H. AVERAGE SECS. 10 - 20 3.9 20 - 30 3.5 30 - 40 3.9 40 - 50 4.6 50 - 60 5.4 60 - 70 11.1 [handwritten signature] | ||