Graph plotting the delivery performance in Pints per Hour against Pump RPM for a Bensport No. 4 Petrol Pump under various test conditions.
| Identifier | ExFiles\Box 31\5\ Scan063 | |
| Date | 7th June 1933 | |
| BENSPORT(Codename for 3 1/2-litre Bentley) N°4 PETROL PUMP LEC 3417 7-6-33 TAP, FILTER, TANK & PUMP AT SAME RELATIVE HEIGHTS & CONNECTED BY SAME LENGTHS & DIA (1/4") PIPES AS ON CHASSIS DELIVERY PIPE 5/16" DIA CONNECTED TO TWO S.U. FLOAT CHAMBERS AS ON ENGINE NOTE: ALL HOLES IN PUMP HEAD ARE 3/32" DIA. STRONG PRESSURE SPRING ALSO FITTED. DELIVERY AT UNIONS NO CARBS FITTED FLOAT CHAMBERS COMPLETE BUT FLOATS SUNK FLOAT CHAMBERS COMPLETE Y-AXIS: DELIVERY PTS / HR X-AXIS: PUMP R.P.M | ||
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).