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).
Quarterly fault analysis report comparing failures for 25 HP and PH.II models.
| Identifier | ExFiles\Box 130\1\ scan0233 | |
| Date | 14th May 1935 guessed | |
| - 10 - IRREGULAR RUNNING OF ENGINE. 25 HP. PH.II. TOTAL. GRAND TOTAL. REMARKS. March Quarter. C.C. 31 7 38) C.P. 6 - 6) 44 Mostly due to sticking air valves. Depot sheet Hd.{Mr Hayward/Mr Huddy}265 deals with this trouble. Previous Quarter. C.C. 27 10 37) C.P. - 2 2) 39 Six Months. 64 19 83 83 POPPING IN SILENCERS. March Quarter. C.C. 10 13 23) C.P. 16 6 22) 45 Is reduced with latest type carburetter. Previous Quarter. C.C. 13 13 26) C.P. 18 2 20) 46 Six Months. 57 34 91 91 SPEEDOMETER FAILURES. March Quarter. C.C. 16 1 17) C.P. - - -) 17 Previous Quarter. C.C. 23 1 24) C.P. - - -) 24 Six Months. 39 2 41 41 OIL LEAK - FRONT AXLE PIVOTS. March Quarter. C.C. 2 - 2) C.P. - - -) 2 Previous Quarter. C.C. 6 - 6) C.P. - - -) 6 Six Months. 8 - 8 8 | ||