Quarterly complaints report for the 40/50 HP model listing issues, number of cars affected, and remarks.
| Identifier | ExFiles\Box 47\2\ Scan077 | |
| Date | 9th June 1928 guessed | |
| W. - Signifies Works. N. - Signifies Cricklewood. P. - Signifies Paris. Quarterly Complaints. 40/50 HP. Nature of Complaint. | No. of Cars. | Remarks. Noisy Tappets. | W. 20. N. 71. P. 6. Total 97. Last qtr's. total 102. | New design of tappet and lubrication scheme. [Handwritten] Improved machining methods on tappets Servo Jaggers. | W. 10. N. 3. P. -. Total 13. Last qtr's. total 23. | Flexibility device now standard on production. Sticking Throttles. | W. 22. N. 9. P. 11. Total 42. Last qtr's. total 17. | The new design overcomes the trouble. Exhaust Butterfly Choke Squeaking. | W. 15. N. 23. P. -. Total 38. Last qtr's. total 21. | New design standardised. | ||
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).