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 showing power variations and B.M.E.P. of a 500cc Rudge unit with various exhaust systems against R.P.M.
| Identifier | ExFiles\Box 133\2\ scan0183 | |
| Date | 8th November 1935 | |
| 500 CC RUDGE UNIT POWER VARIATIONS WITH VARIOUS EXHAUST SYSTEMS. BORE 3.346" STROKE 3.464" C.R. 7.3/1 VALVE TIMING. I.O. 13° L E.O. 42° E I.C. 58° L E.C. 8° L SILENCED 1300 cc PIPES 440 cc PIPES No PIPES. B.M.E.P. B.H.P. R.P.M. J.C.S 8-11-35 | ||