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 of Test No. 2 results for a Rocker Cover Air Silencer, showing Air/Fuel ratio vs R.P.M. for various cylinders at full and part throttle.
| Identifier | ExFiles\Box 155\2\ scan0032 | |
| Date | 7th January 1937 guessed | |
| * TEST No 2 25/30 AIR SILENCER & DISTRIBUTION S.15 ROCKER COVER AIR SILENCER E.61022 WITH STANDARD CARBURETTER AIR/FUEL RATIO R.P.M. PERCENTAGE THROTTLE OPENING FULL THROTTLE - FULL LOAD CYLS 1&2 CYLS 3&4 CYLS 5&6 PART THROTTLE - HALF LOAD THROTTLE OPENING CTS{C. Trot Salt - Carburation} | ||