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 petrol supply pipe size on Autovac delivery against engine RPM.
| Identifier | WestWitteringFiles\Q\2April1927-June1927\ 191 | |
| Date | 13th June 1927 | |
| INDUCTION PIPE DEPRESSION (INS HG) 1.12 2.05 2.9 3.5 AUTOVAC PETROL FEED EFFECT OF SIZE OF PETROL SUPPLY PIPE ON AUTOVAC DELIVERY FULL THROTTLE AUTOVAC PETROL DELIVERY PTS / HR ENGINE DEMAND STANDARD PIPE 3/8" PIPE ENGINE R.P.M | ||