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 the brake drum cooling rate against the speed of the car for an 11 B VI chassis with wheel cowls fitted.
| Identifier | ExFiles\Box 120\1\ scan0313 | |
| Date | 12th February 1941 | |
| BRAKE DRUM COOLING AGAINST SPEED OF CAR. 11 B VI CHASSIS. WHEEL COWLS FITTED. FIGURE 4. COOLING RATE AT 150°C IN °C PER MINUTE. SPEED IN MILES PER HOUR. 1. O.S.F. 2. O.S.R. USING AIR-DEFLECTOR. 3. O.S.R. RMHtt.H.R 12-2-41 | ||