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).
Graph comparing induction pipe capacities for a Japan Unit based on different engine configurations.
| Identifier | ExFiles\Box 102\5\ scan0081 | |
| Date | 23th September 1931 guessed | |
| RM{William Robotham - Chief Engineer}37 COMPARISON OF INDUCTION PIPE CAPACITIES JAPAN UNIT. INLET VALVE DIA. 1·40" E.{Mr Elliott - Chief Engineer} 56851. C/R 5·13-1 OPEN EXHAUST 112° CAMSHAFT STANDARD ROCKERS. 2 CLAUDELS SHORT RAMMING PIPES. HEAD MACHINED TO GIVE MIN. CLCE. ROUND INLET VALVE OF ·275" 2 CLAUDELS AS ABOVE WITH 9" EXTENSION. VALVE LIFT ·344" ·013 TAPPET CLCE B.H.P. R.P.M. B.M.E.P. INDUCTION DEPN. LBS/SQ" Center Diagram Text: IN, EX, 46·0, 46·4, 3·2, 10·6 | ||