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).
Graph and diagrams from tests conducted on a 20 HP Rear Damper Lever.
| Identifier | ExFiles\Box 16\4\ Scan237 | |
| Date | 3rd December 1930 | |
| Sheet 3 20 HP REAR DAMPER LEVER TESTS 17 G IV DAMPER AS USED FOR INDICATOR DIAGRAMS. OVAL LEVER .250 .200 .150 .100 .050 BALL PIN LOAD LBS 20 40 60 80 100 120 C B B-A A C-B SECTION OF FRAME CLOCK ATTACHMENT ARM C B A WHEN RUNNING DAMPER AT 450 R.P.M. 1 1/4" STROKE, A CLOCK INDICATOR PLACED AT ONE END OF ONE EYE MEASURED .003 MOVEMENT ON SUPPORTS | ||