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 comparison chart between Aerolite and E.B. 1299 pistons, showing B.HP and B.M.E.P. against R.P.M.
| Identifier | ExFiles\Box 148\1\ scan0241 | |
| Date | 22th March 1938 | |
| COMPARISON Between Aerolite & E.B. 1299 PISTONS. CYLINDER HEAD WITH LARGE INLET (1.500 DIA) VALVE & SMALL EXHAUST (1.200 DIA) VALVE COMPRESSION RATIO 6.9:1 OPEN EXHAUST UNIT No B.6 (B.H.P) R.P.M. B.M.E.P. (LBS/sq") Aerolite Pistons E.B. 1299 Pistons VALVE TIMING (.020 CLEARANCE) T.D.C. EXH. INL. 3.6° 5.4° 51.0° 49.5° | ||