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).
Two graphs showing the effects of speed, tyre pressure, and mixture control on petrol consumption.
| Identifier | ExFiles\Box 178\1\ img059 | |
| Date | 21th November 1925 guessed | |
| TOP GRAPH: EFFECT OF SPEED & TYRE PRESSURE ON PET. CONSUMPTION. WATER TEMP. 80°C. IGNITION STANDARD MIXTURE CONTROL CENTRAL AXLE 15 x 52 TYRES STANDARD Graph Title: TYRE INFLATION PRESSURE Y-Axis: M.P.G. PET. CONS. X-Axis: ROAD SPEED M.P.H. Data Series: 60 LBS/D", 25 LBS/D" BOTTOM GRAPH: 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 Graph Title: MIXTURE CONTROL Y-Axis: M.P.G. PET. CONS. X-Axis: MIXTURE CONTROL POSITION. X-Axis Labels: STRONG, NOTCHES, WEAK | ||