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).
Performance graphs showing pressure curves before and after tests for a J III rear low-pressure component at various RPMs.
| Identifier | ExFiles\Box 179b\4\ img032 | |
| Date | 6th April 1933 | |
| Top Graph: 120" I.S. 308 LB/D" - 133 LB. 45 45 R.P.M - 0LB/D" BEFORE & AFTER TESTS Bottom Graph: J III REAR. 35/35 LB. LOW PRESSURE WITHOUT EXT. PRESS INLET VALVE. 4" STROKE 120" I.S. 308 LB/D" - 133 LB. R.P.M. 180 135 90 45 Gov. PRESS 4 LB/D" 45 R.P.M - 0LB/D" BEFORE ABOVE TESTS AFTER TESTS | ||