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).
Three graphs showing deceleration/time curves from tests.
| Identifier | ExFiles\Box 85\1\ scan0387 | |
| Date | 9th February 1938 | |
| μ .5 0 1 2 3 4 Include SECS No 1. 1117/1 No 2. 1118/5 No 3. 1118/6 FIG 4 DECELERATION/TIME CURVES. NOS REFER TO MESSRS ROLLS CHART NOS. R.R. CO DRIVER. TRC° | ||