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).
J. 3. Valve Rocker Calculation of Lift.
| Identifier | WestWitteringFiles\V\March1931-September1931\ Scan436 | |
| Date | 23th September 1931 | |
| Ex. FROM E.{Mr Elliott - Chief Engineer} C. to SR. WSR. HS.{Lord Ernest Hives - Chair} ORIGINAL J.{Mr Johnson W.M.} 3. VALVE ROCKER CALCULATION OF LIFT. E1/M23.9.31. X5090. Please find herewith LeC. 2956. shewing the above. This drawing is in agreement with LeC. 2938. on which we have legislated for a valve lift of .4" This lift is .27 of the inlet valve port dia. E.{Mr Elliott - Chief Engineer} | ||