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).
Test report sheet for a 20 HP rear damper lever, including indicator diagrams and a schematic.
| Identifier | WestWitteringFiles\V\December1930-February1931\ Scan092 | |
| Date | 3rd December 1930 | |
| SHEET 3 20 HP REAR DAMPER LEVER TESTS 3.12.30 17 G IV DAMPER AS USED FOR INDICATOR DIAGRAMS. OVAL LEVER C B B.A. A C.B. BALL PIN LOAD LBS Y-AXIS: .250, .200, .150, .100, .050 X-AXIS: 20, 40, 60, 80, 100, 120 CLOCK ATTACHMENT ARM SECTION OF FRAME 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 | ||