Diagram showing modifications to a double piston damper and sylphon chamber pressure release.
| Identifier | ExFiles\Box 56\1\ Scan147 | |
| Date | 6th June 1931 | |
| 6-6-31 GROOVE '075" RAD. ADDED TO EFFECT RELEASE. THIS HOLE WAS FOUND TO REQUIRE RADIUSING TO DRG: (.187") DOUBLE PISTON DAMPER. SYLPHON CHAMBER PRESSURE RELEASE. | ||
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).