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).
Customer complaints about engine overoiling, seized slipper drives, and exhaust blows, along with remarks and proposed solutions.
| Identifier | ExFiles\Box 47\2\ Scan222 | |
| Date | 31th December 1929 guessed | |
| -3- Nature of Complaint. No. of Cars. Last Qtr's. Total. Remarks. Engine Overoiling. W. - N. 13. P. 4. 17. 15. Honing bores, fitting new pistons, and strutting cylinders where necessary. L shaped or corrected rectangular rings help to keep down the oil. From F2B series a number of overoiling complaints have been caused by oil passing down the valve stem; known as "Top overoiling". New felt pads to the valve stem and a reduction of oil pressure to the rocking shaft overcomes this. The felt pads are not a satisfactory oil stopper. They char up too easily and lose their fit. Tests are being run on Asbestos valve packings to overcome top overoiling. Engine Slipper Drive Seized. W. 7. N. 20. P. 3. 30. 15. In spite of carrying out all the latest improvements, i.e. cotton duck friction washers and new spring poundage, we are still getting slipper drives which increase in loading and become uneven in action with running. A new design of slipper wheel is now on production, which could be adapted to Phantom I if it is thought advisable. Exhaust Blows. W. 6. N. 19. P. 3. 28. 39. The difference in expansion between the aluminium cylinder head and the exhaust pipes is so great that the washers do not cover the joints and are burnt away. We are now fitting a modified washer with steel centre which up to now is satisfactory. | ||