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).
Test report for the 11-EX New Phantom with a Weymann body.
| Identifier | ExFiles\Box 71\3\ scan0061 | |
| Date | 4th January 1926 | |
| HS.{Lord Ernest Hives - Chair} COPY. OJ. X8900 TEST REPORT - 11-EX - NEW PHANTON. WEYMANN BODY. Consec. Day. | Agg. Mileage. | Total Running Hours. | Average Speed. | Date. 14. | 2248 | 80 35/60 | 22.0 (Days) | 4.1.26. MILEAGE: Start. | Finish. | Days. 1116 | 1226 | 110 PETROL. Start. | Added. | Finish. | Used. 7 | 13 | 9 | 11 Oil added. | Oil M.P.G. | Petrol M.P.G. | Running Hours. ✓ | | 10.0 | 5 Route, condition, etc; involuntary stops; adjustments; work done; remarks on running, etc. About and outside London. Roads dry. Fine. Stiffness of steering immediately relieved by oiling wheel pivots. Throttle stuck open on two occasions, on one of which the throttle itself appeared to be stuck. New blade fitted to Smith windscreen wiper. Car left at H.J. Mulliner for attention to doors and windows which are leaking. Drivers Garner. | ||