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 the power at road wheels for an 18 HP Lanchester Car against road speed.
| Identifier | ExFiles\Box 22\3\ Scan102 | |
| Date | 1st March 1932 | |
| 18 HP LANCHESTER CAR POWER AT ROAD WHEELS B.H.P. AT ROAD WHEELS STANDARD 20/25 / T. HALF or T. SERIES LANCHESTER B.H.P. R.R. (20/25) B.M.E.P. B.M.E.P. (AT ROAD WHEELS) ROAD SPEED (M.P.H.) VALVE TIMING - .050" C INCE E.C. 6.2° I.O. 13.6° I.C. 42.8° E.O. 41.6° IGNITION TIMING HAND ADV: 24° FULL RETARD AUTO ADV: 48° | ||