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).
Chart comparing temperature and wear of Millenite vs Aluminium-Steel composite rear brake drums on a 4¼ Litre Bentley.
| Identifier | ExFiles\Box 85\1\ scan0016 | |
| Date | 14th January 1936 | |
| REAR BRAKE DRUM TEMPERATURE CHART 4¼ LITRE BENTLEY ROAD CONDITIONS: ICY ALL READINGS TAKEN WITH CAR STATIONARY. THERMOCOUPLES IN SMALL BRASS PAD SPRING LOADED AGAINST BRAKE DRUMS. WEAR OF FERODO DURING TEST:- MILLENITE DRUM: 5 HALF TURNS. ALUMINIUM DRUM: LESS THAN A HALF TURN. NEAR SIDE. MILLENITE DRUM. OFF SIDE. ALUMINIUM-N.M.STEEL COMPOSITE DRUM. TEMPERATURE - DEGREES CENTIGRADE MILES 35 MINUTES TICKNALL HALT! ASHBY TWYCROSS FENNY DRAYTON ROYAL RED GATE LEVEL CROSSING WATLING STREET 660°F | ||