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).
Wear measurements of a Wraith Bakelite Oil Pump casing, bush, and spindle during endurance tests.
| Identifier | ExFiles\Box 149\2\ scan0191 | |
| Date | 24th March 1939 | |
| WRAITH BAKELITE OIL PUMP WEAR MEASURED DURING ENDURANCE TESTS CASING, BUSH & SPINDLE Diagram Labels: DELIVERY SUCTION BUSH SPINDLE Table 1: TOTAL TIME RUN IN HOURS | BUSH IN CASING | SPINDLE IN CASING | EE1 | FF1 | EE2 | FF2 | GG1 | HH1 | GG2 | HH2 2 | -.0001 | +.0001 | +.0001 | 0 | 0 | 0 | -.0002 | -.0002 52 | +.0006 | +.0007 | +.0005 | +.0006 | -.0002 | -.0001 | -.0002 | -.0002 152 | +.0003 | +.0012 | +.0010 | +.0010 | -.0003 | -.0002 | -.0003 | -.0003 652 | +.0011 | +.0014 | +.0011 | +.0015 | -.0005 | -.0003 | -.0005 | -.0005 Table 2: TOTAL TIME RUN IN HOURS | CASING DIMENSIONS | SS{S. Smith} | RR | QQ | PP | TT 2 | 0 | -.0001 | -.0001 | -.0001 | 0 52 | +.0005 | +.0004 | +.0001 | -.0002 | -.0013 152 | +.0005 | +.0004 | +.0001 | -.0001 | -.0013 652 | +.0002 | +.0003 | -.0002 | -.0003 | -.0018 TOP +0002 BOTTOM ? Table 3: TOTAL TIME RUN IN HOURS | DEPTH OF CASING | AT BUSH | AT SPINDLE 2 | 0 | -.002 52 | -.001 | -.0012 152 | -.001 | -.0017 652 | -.001 | -.0010 | ||