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).
Summary report listing customer complaints about vehicle faults and the corresponding engineering remarks.
| Identifier | ExFiles\Box 47\2\ Scan104 | |
| Date | 31th December 1928 guessed | |
| -2- Nature of Complaint. | No. of Cars. | Last Qtr's. Total. | Remarks. Exhaust Cut-Out Sticks. | W. 4. N. 9. P. 1. Total 14. | 18. | New design standardised. Exhaust Butterfly Choke Squeaking. | W. 21. N. 12. P. 8. Total 41. | 60. | We are fitting a lubricator to the spindle. This makes a slight improvement. Engine Overoiling. | W. 5. N. 4. P. 6. Total 15. | 10. | Honing cylinder bores and fitting new pistons, also strutting outer walls usually overcomes this. Improved design of cylinder now on Production. Further experience is proving that strutting is giving the best results. Engine Slipper Drive Seized. | W. 7. N. 4. P. 7. Total 18. | 26. | 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. Magneto Noisy. | W. 11. N. 12. P. 4. Total 27. | 37. | Improved design now in use. Piston Knocks. | W. 1. N. 4. P. 2. Total 7. | 8. | Piston knocks are improved but may still exist in a few cases owing to variations in the aluminium alloy. | ||