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).
Graphs showing the variation of reduced diameter restrictions with oil temperature.
| Identifier | ExFiles\Box 52\1\ Scan019 | |
| Date | 28th August 1928 guessed | |
| PLAIN REDUCED DIA: RESTRICTIONS. VARIATION WITH OIL TEMP: Top Left Graph: L.P { 55/60 LB. LOADS, 13" LEVER } H.P. PORT .187" DIA. L.P. .098" DIA 200 R.P.M. 11" STROKE. 1" = 332 LB/SQ" 20°C, 60°C SLOW RUNNING Top Right Graph: H.P. { 55/60 LB. LOADS, 13" LEVER } H.P. PORT .187" DIA. L.P. .098" DIA 200 R.P.M. 11" STROKE. 1" = 332 LB/SQ" 20°C, 59°C SLOW RUNNING. Middle Left Graph: 55/60 LB LOADS .187" DIA. H.P. .098" DIA. L.P. PORTS 200 R.P.M. 7" STROKE L.P. 1" = 332 LB/SQ" 23°C, 61°C S.R. Middle Center Graph: 55/60 LB. LOADS - 13" LEVER - .187" DIA. H.P. L.P. PORTS .098" DIA. 200 R.P.M. 7" STROKE H.P. 1" = 332 LB/SQ" 17°C, 60°C S.R. Bottom Right Graphs: 55/60 LB. LOADS - 13" LEVER - .187" DIA. H.P. L.P. PORTS .098" DIA. 200 R.P.M. 3.7" STROKE LOW PRESSURE: 1" = 332 LB/SQ", 18°C, 61°C, S R HIGH PRESSURE: 17°C, 60°C, S R Bottom Banner: STANDARD DAMPER BUT WITH LOW PRESS. PASSAGES DRILLED .098" HIGH PRESSURE PASSAGE .187" | ||