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).
Blueprint graph and table detailing the performance of Thermostat Operated Shutters for the Phantom II model.
| Identifier | ExFiles\Box 39\4\ Scan184 | |
| Date | 23th October 1930 guessed | |
| THERMOSTAT OPERATED SHUTTERS P II TABLE DATA: | TYPE OF THERMOSTAT | MEAN RUNNING TEMP | STARTS TO OPEN | STARTS TO CLOSE | FULL OPEN | FULL CLOSED | |--------------------|-------------------|----------------|-----------------|-----------|-------------| | STANDARD | 55* | 56° | 58° | 61° | 48° | | SPECIAL A | 62* | 61° | 63° | | 55° | | SPECIAL B | 73°C | 73° | 75° | | 67° | *ESTIMATED FIGURE: A.B. TEMP NOT LOW ENOUGH TO RECORD ACTUAL TEMP GRAPH LABELS: Y-AXIS: LBS LOAD FROM THERMOSTAT, PUSH, PULL X-AXIS: TOP WATER TEMP. C° GRAPH ANNOTATIONS: - LOAD TO OPEN SHUTTERS 10 LBS. - LOAD TO CLOSE SHUTTERS 5 LBS. - LOADS MEASURED .250" FROM BOTTOM OF STROKE - STANDARD (Top curve) - A (Middle curve) - B (Bottom curve) | ||