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).
Fuel consumption tests comparing carburettors 21-G-IV and 18-G-IV.
| Identifier | ExFiles\Box 102\1\ scan0170 | |
| Date | 1st May 1934 | |
| X5060 Card Copy for Carb file. 1.5.34. Consumption Tests with 21-G-IV and 18-G-IV. Miles run - 112. Average speed - 31.2 M.P.H. 21-G-IV S.V.R.R. carburetter. Petrol 6.125 gallons. Con. 18.28 M.P.G. 18-G-IV. R.R. carburetter. Petrol 6 gallons. Con. 18.66 M.P.G. On hills 21-G-IV definitely gets away from 18-G-IV. HS{Lord Ernest Hives - Chair}/GWH.{George W. Hancock - Head Chateauroux} | ||