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).
Vehicle component wear and performance including distributor points, battery, ignition plugs, and tyres.
| Identifier | ExFiles\Box 82\1\ scan0105 | |
| Date | 10th April 1933 guessed | |
| - 13 - DISTRIBUTOR CONTACT POINTS. We have not had any failure of the above. The loss in the contact points has been more than normal. The chief wear appears to have taken place on the rubbing blocks, a total loss in the setting being .009 during 7;807 miles. BATTERY THE battery has remained in a good condition. The loss of water has been moderate. 1 1/2 pints has been added during the mileage. The two long bolts holding the battery in the box became loose and fell out. The nuts of these bolts should have split pins. The battery box and anchorage has given no trouble. IGNITION PLUGS LODGE X 339 (33). These plugs have run 5000 miles. The electrodes do not show any burning to have taken place. There has been no misfires on acceleration. No sign of preignition at high speed. TYRES The average life of the tyres are: India Tyres 5.5 X 18 Front Rear 4,699 miles 3,253 miles Good Year Tyres Front Rear 5,320 miles 4,445 miles Mobil Aero Oil used throughout the mileage run at Chateauroux. Average Oil Consumption 735.3 M.P.G. Average Petrol Consumption 14.12 M.P.G. Average Speed for mileage run at Chateauroux 52.30 M.P.H. Weight of car 1 T. 10 C. 2 Q. 7 lbs. G.W.H. | ||