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).
On the road performance of car 7-CA, detailing its speed and fuel consumption.
| Identifier | ExFiles\Box 183\M22\ img018 | |
| Date | 11th June 1917 | |
| 7 CA ROAD PERFORMANCE MUCH BETTER THAN SML 40/50 IN LINE WITH HIGH ENGINE POWERS OBTAINED ON TEST-BED. EH2/AT11.6.17. To R.{Sir Henry Royce} from EH. c. to J.{Mr Johnson W.M.} c. to By.{R.W. Bailey - Chief Engineer} c. to E.{Mr Elliott - Chief Engineer} X.682. RE 7-CA CAR. X.3056. We have run this car on the road. It promises to be very good, it is certainly very lively. We can get 70 miles on hour on the third gear, Consumption on good roads averaging 30 miles an hour, is 18 miles to the gallon. EH. | ||