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).
Shorter valve springs to suit stronger washers, referencing an attached drawing.
| Identifier | ExFiles\Box 36\1\ scan 128 | |
| Date | 4th September 1917 | |
| To By ) from E.{Mr Elliott - Chief Engineer} EH,) c. to Clk. X.2925D. St.{Capt. P. R. Strong} Maragret's Bay. Sept. 4th 1917. Re - Shorter Valve Spring to suit stronger washers E3/W4917. Please find attached drawing No. LeC. 858 showing spring diagrams for the above. E.{Mr Elliott - Chief Engineer} | ||