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 with speed for a Delco damper, shown through graphs and data tables.
| Identifier | ExFiles\Box 56\1\ Scan038 | |
| Date | 9th January 1931 guessed | |
| SHEET VI VARIATION IN PERFORMANCE WITH SPEED DELCO DAMPER Top Chart: 154 LBS/SQ" 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 Chart Labels: 1.08 FT/SEC B 1.5 FT/SEC C .75 FT/SEC A VALVES G4 2G 4" BALL PIN STROKE Bottom Chart: 462 LBS/SQ" OIL PRESS BALL PIN | VEL | MAX PRESS | M.E.P. A | .75 | 308 | 215 B | 1.08 | 420 | 300 C | 1.50 | 495 | 360 Chart Labels: 1.50 FT/SEC C. 1.08 FT/SEC B. .75 FT/SEC A. {Mr Adams} VALVE 2G. G4 4" BALL PIN STROKE Bottom Text: TESTS TAKEN WITH 7.5" LEVER. THE VALVES 2G. G4. BEING RECOMMENDED FOR THE FRONT OF AMERICAN PI CARS | ||