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 average coefficient of friction and temperature rise of Ferodo bonded asbestos lining over time.
| Identifier | ExFiles\Box 26\4\ Scan258 | |
| Date | 8th May 1925 guessed | |
| V3209 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. TEMPERATURE F° VALUE OF µ PERIPHERAL SPEED OF DRUM 1000 FT/MIN. WORK DONE. 1 H.P. HOUR PER SQ. IN. LINING Left Y-Axis: VALUE OF µ Right Y-Axis: DEGS. FAH-R X-Axis: TIME MINS | ||