Suggestion for trial modifications to a Damper Release Valve by drilling extra holes.
| Identifier | ExFiles\Box 56\1\ Scan237 | |
| Date | 1st December 1932 | |
| X235 HS {Lord Ernest Hives - Chair} /RM. {William Robotham - Chief Engineer} FROM HDY. {William Hardy} HDY {William Hardy} 2/M2.12.32. DAMPER RELEASE VALVE. With reference to N. sch. 3593. we suggest that after trial with a plug drilled with three .125 release holes as shewn, extra holes should be drilled, also near the top of the piece, to determine whether there is noticeable restriction from the three holes. HDY. {William Hardy} | ||
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).