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).
Two graphs showing the position of mixture control versus RPM for carburettor adjustments.
| Identifier | WestWitteringFiles\N\2October1925-December1925\ Scan190 | |
| Date | 10th October 1925 guessed | |
| contd :- -5- Top Graph: TITLE: POSITION OF CONTROL REQUIRED TO GIVE CORRECT MIXTURE WHEN JET SET TOO EARLY. Y-AXIS: POSITION OF MIXTURE CONTROL NOTCHES WEAK 0 2 4 6 8 10 12 NOTCHES RICH 0 2 4 6 8 10 12 X-AXIS: R.P.M. 0 200 400 600 800 1000 ANNOTATIONS: AIR VALVE STARTS TO LIFT AIR PORTS OPEN RANGE OF MIX. CONTROL. The following diagram shows what results should be obtained if the carburetter is made and adjusted correctly :- Bottom Graph: TITLE: CURVE SHOWING POSITION OF MIXTURE CONTROL TO GIVE CORRECT MIXTURE. Y-AXIS: POSN OF MIX. CONTROL NOTCHES WEAK 10 8 6 4 2 0 NOTCHES RICH 2 4 6 8 10 X-AXIS: R.P.M. 0 500 1000 1500 2000 2500 ANNOTATIONS: LIGHT LOADS FULL LOAD | ||