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).
Comparison of the coefficient of friction over a 10-minute period for 'Mintex' flexible brake lining versus Cast Iron on Cast Iron.
| Identifier | ExFiles\Box 26\4\ Scan281 | |
| Date | 21th January 1926 guessed | |
| Handwritten Top: X719, K3409 (crossed out) Handwritten Right: 61802, 61803 Top Graph: CO-EFFICIENT OF FRICTION "MINTEX" FLEXIBLE BRAKE LINING (WOVEN ASBESTOS & BRASS WIRE) AVERAGE CO-EFFICIENT OF FRICTION = 0.326 Y-Axis: 0.4, 0.3, 0.2, 0 X-Axis: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 MINUTES Bottom Graph: CO-EFFICIENT OF FRICTION CAST IRON ON CAST IRON AVERAGE CO-EFFICIENT OF FRICTION = 0.216 Y-Axis: 0.4, 0.3, 0.2, 0.1, 0 X-Axis: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 MINUTES | ||