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 detailing engine faults and their remedies across various models for the June quarter.
| Identifier | ExFiles\Box 47\3\ Scan197 | |
| Date | 30th June 1931 guessed | |
| -1- 20 HP. 25 HP. PH.I. PH.II. TOTAL. GRAND TOTAL. REMARKS. ENGINE - SLIPPER & SPRING DRIVE. June Quarter. C.C. 20 2 5 15 42 } 43 W.P. 1 - - - 1 } Previous " C.C. 35 4 9 9 57 } 65 W.P. 3 2 1 2 8 } Six months. 59 8 15 26 108 108 Early 20 HP. and Ph.I. These can be cured by fitting cotton duck washers in place of Bakelite. 20/25 HP. We do not have much trouble on these cars. Ph.II. Latest type low inertia drive with "window" type pressure plates cures this trouble. See Depot Sheet Hd.{Mr Hayward/Mr Huddy}190. ENGINE - DYNAMO DRIVE RATTLES. June Quarter. C.C. 2 1 - - 3 } 4 W.P. - 1 - - 1 } Previous " C.C. 8 1 1 - 10 } 10 W.P. - - - - - } Six months. 10 3 1 - 14 14 This has always been a trouble on 20 HP cars. No modification available. ENGINE - FAN PULLEYS. June Quarter. C.C. - - 6 14 20 } 54 W.P. - - 27 7 34 } Previous " C.C. - - 5 5 10 } 67 W.P. - - 39 18 57 } Six months. - - 77 44 121 121 Trouble definitely overcome by fitting bolts instead of rivets. This is being done on all new cars, and on existing cars when necessary. Depot Sheet Hd.{Mr Hayward/Mr Huddy}210. ENGINE - OIL PUMP NOISY. June Quarter. C.C. - 2 3 1 6 } 7 W.P. 1 - - - 1 } Previous " C.C. - - 2 1 3 } 4 W.P. - - 1 - 1 } Six months. 1 2 6 2 11 11 Depot Sheet Hd.{Mr Hayward/Mr Huddy}206 deals with the fitting of an oil reservoir to the oil pump on Ph.II cars and is a definite cure. | ||