Graph showing the results of an Acme thread test for B50 rear axle oil seals, measuring leakage variation with pressure and shaft speed.
| Identifier | ExFiles\Box 111\4\ scan0112 | |
| Date | 2nd May 1939 | |
| ACME THREAD TEST (B50 REAR AXLE OIL SEALS) VARIATION OF LEAKAGE WITH PRESSURE AND SPEED OF SHAFT TEMPERATURE 50°C DETAILS SCHEME GCD 1340. HOUSING BL 1029 BUSH BL 980 OIL CASTROL XL 30 LEAKAGE (PTS. PER HR.) PRESSURE (LBS/sq") SPEED OF SHAFT 500 R.P.M. 1000 R.P.M. 1500 R.P.M. 2000 R.P.M. SHAFT NOT REVOLVING BL 2336 SHEET I 2.5.39 | ||
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).