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 and consumption test results for an S.U. carburetter with strong and weak mixture settings.
Identifier | ExFiles\Box 31\4\ Scan065 | |
Date | 11th August 1931 guessed | |
-2- S.U. Carburetter with plain bonnet. Strong mixture. | Air Temp. | Water Temp. | Lap Time | Lap Speed MPH. | 1/2 Lap mile time | 1/2 Lap mile speed. | |---|---|---|---|---|---| | 20º | 84.5º | 2-26.8 | 67.85 | | | | 20º | 84.5º | 2-26.6 | 67.94 | | | S.U. carburetter with plain bonnet. Weak mixture. | Air Temp. | Water Temp. | Lap Time | Lap speed MPH. | 1/2 Lap mile time | 1/2 Lap mile speed. | |---|---|---|---|---|---| | 20º | 84.5º | 2-29.2 | 66.76 | 26.8 | 67.16 | | 20º | 84.5º | 2-30 | 66.39 | | | Petrol consumption tests (Derby to Brooklands). Carried out on standard carburetter 25 HP. 148 miles 7 galls. petrol used = 21.1 M.P.G. (Brooklands to Derby) Petrol consumption test. Carried out on S.U. carburetter, set full weak on control lever. 152 miles. 9 galls. petrol used = 17 M.P.G. Engine Unit C.7. 110º camshaft Std. C/R.{Sir Henry Royce} Std. 25 HP. exhaust system E.55794 arrgt. Std. R.{Sir Henry Royce} series radiator with undented tubes. F.Dodd. | ||