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 table of reported faults for steering and starter motors across various models with proposed remedies.
| Identifier | ExFiles\Box 47\3\ Scan344 | |
| Date | 1st December 1931 guessed | |
| -16- 20 HP. 25 HP. PH.I. PH.II. TOTAL. GRAND TOTAL. REMARKS. STEERING CONTROLS RATTLE. December Quarter. C.C. - 2 - 5 7 } 7 May be definitely cured by fitting new felt rings. W.P. - - - - } Previous " C.C. - - - 8 8 } 8 W.P. - - - - } Six months. - 2 - 13 15 15 STEERING - FRONT TYRES WEARING. December Quarter. C.C. 3 2 - 6 11 } 11 Generally due to excessive "Toe-in" no trouble when this is corrected. See Depot Sheet No. Hm.{Capt. W. Hallam - Head Repairs}160. W.P. - - - - } Previous " C.C. - - - 22 22 } 24 W.P. - - - 2 2 } Six months. 3 2 - 30 35 35 SIDE STEERING KNOCKS. December Quarter. C.C. - 2 - 2 4 } 5 Modification now available to cure these see Depot Sheet No. Hd.{Mr Hayward/Mr Huddy}168. W.P. - - - 1 1 } Previous " C.C. - - - 6 6 } 7 W.P. - - - 1 1 } Six months. - 2 - 10 12 12 STARTER MOTORS. December Quarter. C.C. 10 14 - 15 39 } 39 20 HP. and 20/25 HP. starter drives require further improvement see Depot Sheets Hm.{Capt. W. Hallam - Head Repairs}165 & Hd.{Mr Hayward/Mr Huddy}192 Ph.II and Hd.{Mr Hayward/Mr Huddy}197 20/25 HP. W.P. - - - - } Previous " C.C. 16 7 - - 23 } 24 W.P. - - - 1 1 } Six months. 26 21 - 16 63 63 | ||