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 variation graphs and data tables for a Delco Damper at different speeds.
| Identifier | WestWitteringFiles\V\December1930-February1931\ Scan204 | |
| Date | 9th January 1931 guessed | |
| SHEET VI VARIATION IN PERFORMANCE WITH SPEED DELCO DAMPER Top Graph & Table: 154 LBS/D" OIL PRESS. BALL PIN VEL | MAX. PRESS | M.E.P. .75 | 33 | 29.4 | A 1.08 | 38.4 | 33 | B 1.50 | 52.5 | 43.8 | C Graph Labels: 1.08 FT/SEC B, 1.5 FT/SEC C, .75 FT/SEC A VALVES G4 2G 4" BALL PIN STROKE Bottom Graph & Table: 462 LBS/D" OIL PRESS. BALL PIN VEL | MAX. PRESS | M.E.P. A | .75 | 308 | 215 B | 1.08 | 420 | 300 C | 1.50 | 495 | 360 Graph Labels: 1.50 FT/SEC C., 1.08 FT/SEC B., .75 FT/SEC A.{Mr Adams} VALVE 2G. G4 4" BALL PIN STROKE TESTS TAKEN WITH 7.5" LEVER. THE VALVES 2G. G4. BEING RECOMMENDED FOR THE FRONT OF AMERICAN PI CARS | ||