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 plotting the average coefficient of friction and temperature of Ferodo bonded asbestos lining over a one-hour period.
| Identifier | ExFiles\Box 66\5\ scan0004 | |
| Date | 17th April 1925 guessed | |
| AVERAGE CO-EFFICIENT OF FRICTION OF FERODO BONDED ASBESTOS LINING. SPEED & WORK CONSTANT WITH THE TEMPERATURE RISE FROM 70° TO 525° FAH, IN ONE HOUR. VALUE OF μ DEGS. FAHR. TIME MINS. TEMPERATURE F° VALUE OF μ PERIPHERAL SPEED OF DRUM 1000 FT/MIN. WORK DONE. I H.P. HOUR PER SQ. IN. LINING. arns X | ||