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).
Performance graph showing the power increase on a Phantom engine using a low depression carburettor.
| Identifier | WestWitteringFiles\R\2October1927-November-1927\ 168 | |
| Date | 21th January 1927 | |
| POWER INCREASE ON PHANTOM DUE TO LOW DEPRESSION CARBURETTOR. ENGINE N° AU 25. COMPRESSION RATIO = 4.6 STANDARD INDUCTION PIPE. HORIZONTAL RRCH EAGLE VIII CARBURETTOR. BRAKE HORSE POWER R.P.M. OF ENGINE. INDUCTION PIPE DEPRESSION (INCHES OF MERCURY) STANDARD CARB. INDUCTION PIPE DEPRESSION. STANDARD CARB EAGLE VIII CARB. No 1. V172 BBM 21.1.27 | ||