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 modifications and timing for the 'F' type supercharged engine.
| Identifier | ExFiles\Box 43\3\ Scan217 | |
| Date | 1st December 1928 | |
| E.{Mr Elliott - Chief Engineer} (WW) c. Hs.{Lord Ernest Hives - Chair} +9003 BY/Cgh{W Clough}2/G.1.12.28. R.R. 'F' TYPE SUPERCHARGED ENGINE. ------------------------------- We send you herewith print of Sch. 1108 showing .470" valve lift curve which has been produced in accordance with the latest RR. practice, and to give the timing recommended by R.{Sir Henry Royce} in E1/M30.8.28. It will be noted that the valve lift is .470" which is a mean for the two valves, and the slight increase over .463" is due to the modification shown on LeC.2423 on which the valves are arranged slightly desaxe. The camshafts in accordance with the above have been instructed experimentally. BY/Cgh.{W Clough} BOARD | ||