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).
Carburettor consumption tests for models 21-G-IV and 18-G-IV over a specified course.
| Identifier | ExFiles\Box 147\5\ scan0110 | |
| Date | 2nd May 1934 | |
| x459 2.5.34. Consumption Tests with 21-G-IV and 18-G-IV. Course:- Ashbourne, Buxton, Chapel-en-le-Frith, Glossop, Ashopton, Bamford, Bakewell, Winster, Wirksworth, Duffield, Derby. Carburetters changed over. 21-G-IV. Standard R.R. Miles 112. Petrol 7.375 gallons. Consumption 15.18. Average speed 41.6 18-G-IV. S.V.R.R. Miles 112. Petrol 7.375 gallons. Consumption 15.18. Average speed 41.6 HB{C. E. Harcombe}/GWH.{George W. Hancock - Head Chateauroux} | ||