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).
Indicator diagrams for a Micklewood 2-stroke engine showing firing and motoring cycles against crank angle.
| Identifier | ExFiles\Box 54\4\ Scan052 | |
| Date | 25th September 1924 guessed | |
| MICKLEWOOD 2 STROKE FIRING 4 1/2" BORE 5" STROKE SCAVENGING PR. {Percy H. Rose} 3 LBS/D'' DIAGRAM AREA 8.718 D'' SPRING RATING 50 LBS/D'' I.M.E.P. 54.5 LBS/D'' EXP. PRESSURE 250 LBS/D'' LBS/D'' ATS LBS/D'' IGNITION 14° B.T.D.C. EX. VALVE CLOSES 83° A.B.D.C. EX. VALVE OPENS 94° A.T.D.C. SCAVENGING COMMENCES 62° B.B.D.C FORCED INDUCTION BEGINS 22° A.B.D.C ATS MOTORING COMPRESSION PR. {Percy H. Rose} 85 LBS./D'' LBS/D'' ATS CRANK ANGLE | ||