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).
Series of three performance graphs showing pressure and stroke data under varying conditions.
| Identifier | ExFiles\Box 179b\2\ img103 | |
| Date | 18th October 1932 | |
| Top Left Chart: 40/40 LB. 180 R.P.M. 1" STROKE LOW PRESSURE .250 DIA GOVERNOR PIPES .250 HAT .005" CLEARANCE Y-axis: 308 LBS/D" X-axis: 120" I.S. Curves: 80, 60, 30, N Top Right Chart: 40/40 LB. 540 R.P.M. 1" STROKE LOW PRESS .250 DIA GOVERNOR PIPES .250" HAT .005" CLEARANCE Y-axis: 308 LBS/D" X-axis: 120" I.S. Curves: 80, 60, 30, N Bottom Chart: 40/40 LB. 45 R.P.M. 4" STROKE. LOW PRESS .250 DIA PIPE LINE 2ND RE-TEST AFTER DRYING CYLINDER Y-axis: 308 LBS/D" X-axis: 120" I.S. Curves: 80, 60, 30, N | ||