Running report for vehicle/component 27-G-VI, listing modifications and the mileage covered by each.
| Identifier | ExFiles\Box 7\1\ 600b 27 G V1 Mx Car-page53 | |
| Date | 8th September 1938 | |
| R-R REPORT ON RUNNING OF 27-G-VI. Total mileage run by Mx. {John H Maddocks - Chief Proving Officer} 15,896. The mileages covered by the modifications which have been applied from time to time are shown below:- (1) White metal bearings to engine. (2) Camwheel in Attwater fine grain material. (3) 8 x 34 axle ratio. 13001 Miles. Rear axle ex. 26-EX. previously run 17,000 miles in France, fitted with cast iron brake drums, Thermoid brake linings, and carbon steel axle tubes. 9872 Miles. Delco distributor with spring drive 7667 Miles. Cylinder head with increased thickness of metal bridge between valves to overcome distortion of seatings. 6506 Miles. Electrically butt welded intermediate pipe to exhaust system. 6000 Miles. Long studs in 3 1/2% nickel steel to outer flanges of exhaust manifold giving increased flexibility to overcome breakages. 5520 Miles. Parallel linkage to clutch operating mechanism. 5120 Miles. | ||
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).