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).
Graph showing brake drum cooling curves at 60 MPH for a 4850 chassis.
| Identifier | ExFiles\Box 120\1\ scan0314 | |
| Date | 12th February 1941 | |
| BRAKE DRUM COOLING CURVES. 60 M.P.H 4850 CHASSIS. FIGURE 5. TEMPERATURE IN °C TIME IN MINUTES. 225 200 175 150 125 100 75 50 0 1 2 3 4 5 6 7 8 * 197°C * 169°C 25.6°C/MIN. O.S.R. 39.4°C/MIN. O.S.F. RM{William Robotham - Chief Engineer}/M.K.R 12-2-41 | ||