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).
Engine complaints, 'Engine Slipper Drive' and 'Engine Overoiling', with car counts and technical remarks.
| Identifier | ExFiles\Box 47\2\ Scan226 | |
| Date | 31th December 1929 guessed | |
| -2- Nature of Complaint: Engine Slipper Drive varying in load causing Engine Gear Rattles and Knocks. No. of Cars: Pre-India: W. 5. N. - P. - India Series: W. 28. N. 25. P. 1. Total: 59. Last Qtr's. Total: 40. Remarks: In spite of carrying out 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. Our chief trouble at present is caused by rattling in the gears. To overcome this all slack is taken out of dynamo drive serrations and bearings. See that the springs give the correct damping to the pressure plate. There must be a minimum amount of slack in the timing gears and engine bearings especially the front bearings. We shall be glad of any help anyone can give us in connection with this complaint as we have some very unsatisfactory and difficult cases to deal with. We are experimenting with a new slipper wheel for the 20 HP. We do not know of anything further that can be done with the present design. Nature of Complaint: Engine Overoiling. No. of Cars: Pre-India: W. 2. N. - P. - India Series: W. 5. N. 5. P. - Total: 12. Last Qtr's. Total: 15. Remarks: Honing bores and fitting new pistons. If only slight wear in the cylinder bores, L shaped or corrected rectangular rings are effective. | ||