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 effect of Autovac float movement on petrol delivery against engine RPM.
| Identifier | ExFiles\Box 40\4\ Scan220 | |
| Date | 2nd February 1927 guessed | |
| FIG III AUTOVAC WITH MOVING FLOAT EFFECT OF FLOAT MOVEMENT ON PETROL DELIVERY. 20 HP ENGINE No 11GII STANDARD INDUCTION SYSTEM. TESTS AT HALF THROTTLE. PETROL LIFTED 32" THROUGH A PLAIN PIPE .250" BORE 6FT LONG INDUCTION PIPE DEPRESSION (INS. MERCURY) PETROL DELIVERY PTs/HR ENGINE R.P.M. No DELIVERY BELOW 1000 R.P.M. 12" FLOAT MOVEMENT. 9" FLOAT MOVEMENT. 6" FLOAT MOVEMENT. 3" FLOAT MOVEMENT. NO FLOAT MOVEMENT ON SPINDLE. | ||