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).
Valve lift curves with lower lift, referencing specific drawings and rocker geometry.
| Identifier | WestWitteringFiles\L\April1924-June1924\ Scan31 | |
| Date | 1st June 1924 | |
| TO DY.{F R Danby} FROM E.{Mr Elliott - Chief Engineer} SECRET. E1/M6. 6. 24. Copy to Mr. HS.{Lord Ernest Hives - Chair} E.{Mr Elliott - Chief Engineer} A.{Mr Adams} C. Y9090 X7060 (struck through) VALVE LIFT CURVES WITH LOWER LIFT. We send you herewith drawings Nos. LeC. 1880. 1881. and 1882. dealing with the above. The first named deals with the geometry of the rocker, and shews that a cam lift of .325 will give us a valve lift of .423. These are the dimensions we wish to work to using the existing valves, rockers, and springs. Would you kindly instruct the necessary formen to be prepared for these cam curves. E.{Mr Elliott - Chief Engineer} [Illegible purple circular stamp] | ||