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).
Study on the effect of high temperatures on servo wear and mechanical gain factor.
| Identifier | WestWitteringFiles\L\2Jan1924-March1924\ Scan14 | |
| Date | 2nd January 1924 | |
| EFFECT OF HIGH TEMPERATURES ON WEAR AND MECHANICAL GAIN FACTOR OF SERVO LOAD ON SERVO W = 10 1/2 lbs OR 120 lbs PEDAL PRESSURE IN ALL TESTS. TABLE: COLUMN 1 - CONDITIONS OF TEST: SERVO DRUM REVS 500 RPM DRUM COOLED AT TEMP OF BOILING WATER SERVO DRUM REVS 2000 RPM DRUM COOLED AT TEMP OF BOILING WATER SERVO DRUM REVS 500 RPM DRUM NOT COOLED ALLOWED TO ATTAIN PURPLE HEAT ONLY COLUMN 2 - WEAR: WEAR IN NOTCHES TAKEN UP PER HP HOUR ABSORBED BY LINING Legend: FRESH LINING, STRONGLY HEATED LINING Values: 4 NOTCHES, 3.3 NOTCHES, 11 NOTCH, 5 NOTCHES, 1 NOTCH, 3 NOTCHES COLUMN 3 - MECHANICAL GAIN: MECHANICAL GAIN FACTOR OF SERVO Legend: FRESH LINING, STRONGLY HEATED LINING Values: 18 3/4, 20, 18, 26, 19 1/2, 29, HIGH VALUE DIAGRAM: 1 NOTCH = .0015" WEAR PER SHOE (APPROX) MECHANICAL GAIN P/W a.{Mr Adams} TW GRAPH: Title: 500 R.P.M DRUM NOT COOLED Y-Axis: MECHANICAL GAIN, 10, 20, 30, 40, X X-Axis: TIME RUN MINS, 1, 2, 3, 4, 5 Curve 1: LINING THAT HAS BEEN THROUGHOUT ROASTED Curve 2: LINING THAT HAS BEEN ON R.P. HOT DRUM ONCE Curve 3: NEW LINING Top Right Corner: V.M | ||