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 performance and wear characteristics for E.A.C. Servo cast iron and Ferodo liners.
| Identifier | ExFiles\Box 73\1\ scan0093 | |
| Date | 24th January 1924 | |
| E.A.C. SERVO CAST IRON LINERS Left Graph: SERVO MECH GAIN VARIATION IN MECH GAIN OF SERVO WITH SPEED DRUM COOLED EQUIVALENT PEDAL PRESSURE 100LBS DRUM R.P.M Right Graph: SERVO MECH GAIN VARIATION IN MECH GAIN OF SERVO WITH TEMPERATURE DRUM NOT COOLED EQUIVALENT PEDAL PRESSURE 100LBS TIME RUN MINS Vertical Text: BOTH FOR AN EQUIVALENT PEDAL PRESSURE OF 100LBS Top Table: RELATIVE WEARING QUALITIES CAST IRON AND FERODO CONDITION OF LINING AVERAGE VALUE NOTCHES WEAR PER BHP.Hr ABSORBED BY SERVO STANDARD LININGS .8 NOTCHES FERODO .8 NOTCHES CAST IRON ROASTED LININGS 4.5 NOTCHES FERODO .6 NOTCHES CAST IRON Bottom Table: RELATIVE MECH. GAIN OF SERVO. CAST IRON & FERODO CONDITION OF LINING AVERAGE VALUE MECHANICAL GAIN OF SERVO STANDARD LININGS 18.7 FERODO 19 CAST IRON ROASTED LININGS 29 FERODO 20 CAST IRON W.A.R 24/1/24 | ||