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 the Mechanical Efficiency and Indicated Horsepower of Aerolite & E.B.1299 pistons against engine R.P.M. for unit B.6.
| Identifier | ExFiles\Box 131\1\ scan0131 | |
| Date | 1st May 1934 | |
| B.V. 20 COMPARISON OF MECHANICAL EFFICIENCY (AEROLITE & E.B.1299 PISTONS) UNIT Nọ B.6 I.H.P. MECHANICAL EFFICIENCY % R.P.M. AEROLITE PISTONS E.B. 1299 PISTONS I.H.P M.{Mr Moon / Mr Moore} My/34 26/9.60 | ||