Rolls-Royce Archives
         « Prev  Box Series  Next »        

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 the wear and mechanical gain factor of a servo mechanism.

Identifier  ExFiles\Box 26\4\  Scan235
Date  21th January 1929
  
EFFECT OF HIGH TEMPERATURES ON WEAR AND MECHANICAL GAIN FACTOR OF SERVO
LOAD ON SERVO W = 10½LBS OR 100LBS PEDAL PRESSURE IN ALL TESTS.
CONDITIONS OF TEST
WEAR IN NOTCHES TAKEN UP PER ½ HOUR ABSORBED BY LINING
FRESH LINING
STRONGLY HEATED LINING
MECHANICAL GAIN FACTOR OF SERVO
FRESH LINING
STRONGLY HEATED LINING
SERVO DRUM REVS 500 R.P.M. DRUM COOLED AT TEMP OF BOILING WATER
4 NOTCHES
3.5 NOTCHES
15¾
20
SERVO DRUM REVS 2000 RPM COOLED AT TEMP OF BOILING WATER
4 NOTCH
5 NOTCHES
14
25
SERVO DRUM REVS 500 R.P.M. DRUM NOT COOLED. ALLOWED TO ATTAIN PURPLE HEAT ONLY
1 NOTCH
5 NOTCHES
10.2
HIGH VALUE
2
MECHANICAL GAIN
40
30
20
10
500 R.P.M
DRUM NOT COOLED
LINING THAT HAS BEEN THOROUGHLY ROASTED
LINING THAT HAS BEEN ON REG. HOT ENDURANCE
NEW LINING
TIME RUN MINS
1 NOTCH = .0015" WEAR PER SHOE (APPROX)
MECHANICAL GAIN P/W
P
W
T.W
W.A.R
21/1/29
  
  


Copyright Sustain 2025, All Rights Reserved.    whatever is rightly done, however humble, is noble
An unhandled error has occurred. Reload 🗙