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 graph for Specialloid Pistons, showing BHP and BMEP against RPM.
| Identifier | ExFiles\Box 148\4\ scan0317 | |
| Date | 13th February 1935 guessed | |
| SPECIALLOID PISTONS UNIT: - TEST RIG UNIT STANDARD CYLINDER HEAD 1.400 DIA INLET VALVE 1.300 DIA EXHAUST VALVE COMPRESSION RATIO 6.42 : 1 OPEN EXHAUST NO AIR SILENCER B.H.P. R.P.M. B.M.E.P. (LBS □) VALVE TIMING (.020 CLEARANCE) T.D.C. INLET OPENS 5° INLET CLOSES 49° EXHAUST OPENS 52° EXHAUST CLOSES 6° INL. EXH. Ω.M. N=2.35 | ||