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, detailing performance and driver remarks.
| Identifier | ExFiles\Box 71\3\ scan0114 | |
| Date | 9th March 1926 | |
| HS{Lord Ernest Hives - Chair} COPY. 3.30 9/3/26 TEST REPORT - 11-EX. NEW PHANTOMCodename for PHANTOM I. WEYMANN BODY. Consec. Day. | Agg. Mileage. | Total Running Hours. | Average Speed. | Date. 55 | 9607. | 342 35/60 | 26 | 23.2.26. MILEAGE. | PETROL. Start. | Finish. | Days. | Start. | Added. | Finish. | Used. 981. | 1111 | 130 | 10 | 8 | 6 | 12 Oil added. | Oil M.P.G. | Petrol M.P.G. | Running Hrs. | | 10.8 | 5 Route, condition etc. Involuntary stops. Adjustments, work done. remarks on running etc. Limoges to Cahors. Nothing to report on chassis. Road surface good. Henry Boot. The engine is much the best feature in this chassis. it pulls better at slow speeds on top gear than any engine I have met. The car might have a 14-tooth axle from its performance. P.N. 23.2.26. Tyres are becoming too treadless. Drivers Henry Boot. | ||