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).
Extract discussing a carburetter modification to increase damping on the air valve.
| Identifier | ExFiles\Box 5\4\ 04-page037 | |
| Date | 7th March 1922 | |
| X.4228. Extract from E1/7.3.22 (3) CARBURETTER. X.4228. To get more damping on the air valve the piston could be extended upwards above the suction annulus with many rings turned in it. This appears to be the effect for which you are seeking. E.{Mr Elliott - Chief Engineer} | ||