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).
Graphs showing the effects of speed, tyre pressure, and mixture control on petrol consumption.
| Identifier | ExFiles\Box 160\2\ scan0070 | |
| Date | 24th November 1925 | |
| Top Left Section: EFFECT OF SPEED & TYRE PRESSURE ON PET. CONSUMPTION. WATER TEMP. 80°C. IGNITION STANDARD MIXTURE CONTROL CENTRAL AXLE 15 x 52 TYRES STANDARD. Top Graph: Title: TYRE INFLATION PRESSURE Y-Axis: M.P.G. PET. CONS. X-Axis: ROAD SPEED M.P.H. Data Lines: 60 LBS/D'', 25 LBS/D'' Bottom Left Section: EFFECT OF MIXTURE CONTROL ON PETROL CONSUMPTION WATER TEMP. 80°C. IGNITION STANDARD AXLE 15 x 52 SPEED 30 M.P.H. TYRE PRESS. 60 LBS/D'' TYRES STANDARD. Bottom Graph: Title: MIXTURE CONTROL Y-Axis: M.P.G. PET. CONS. X-Axis: MIXTURE CONTROL POSITION. STRONG NOTCHES. WEAK Top Right Corner: (62) Bottom Right Stamp: ROLLS-ROYCE LIMITED PLANT ROOM 24 NOV 1925 DERBY | ||