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).
Performance indicator diagrams for a Micklewood 2-stroke engine, showing pressure vs. crank angle.
| Identifier | WestWitteringFiles\L\July1924-September1924\ Scan47 | |
| Date | 1st September 1924 guessed | |
| MICKLEWOOD 2 STROKE FIRING 4 1/2" BORE 5" STROKE SCAVENGING PR.{Percy H. Rose} 3 LBS/□" DIAGRAM AREA 8.718 □" SPRING RATING 50 LBS./□" I. M.{Mr Moon / Mr Moore} E.{Mr Elliott - Chief Engineer} P. 54.5 LBS/□" EXP. PRESSURE 250 LBS/□" IGNITION 14º B.T.D.C. EX. VALVE CLOSES 93º A.B.D.C. EX. VALVE OPENS 94º A.T.D.C. SCAVENGING COMMENCES 62º B.B.D.C. FORCED INDUCTION BEGINS 22º A.B.D.C. MOTORING COMPRESSION PR.{Percy H. Rose} 85 LBS./□" LBS/□" ATS CRANK ANGLE | ||