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).
Faults found in exhaust silencers over a six-month period for 25 HP and PH.II models.
| Identifier | ExFiles\Box 130\1\ scan0243 | |
| Date | 30th June 1935 guessed | |
| - 5 - EXHAUST SILENCER CORRODED. 25 HP. PH.II. TOTAL. GRAND TOTAL. REMARKS. June Quarter. C.C. 5 8 13) C.P. 1 7 8) 21 All silencers are now Parkerised and a longer life is expected. Previous Quarter. C.C. 3 8 11) C.P. 1 1 2) 13 Six Months. 10 24 34 34 EXHAUST BLOWS GENERALLY AND CUT-OUT SEIZED OR RATTLE. June Quarter. C.C. 21 20 41) C.P. 17 15 32) 73 This trouble on Ph.II is caused by the sliding joint not working properly and is cured by modifying the sliding joint and fitting an additional stay to the rear silencer as per Depot Sheets Hd.{Mr Hayward/Mr Huddy}199 and Hd.{Mr Hayward/Mr Huddy}218. Previous Quarter. C.C. 12 23 35) C.P. 25 19 44) 79 Six Months. 75 77 152 152 FRONT EXHAUST SILENCER CRACKED. June Quarter. C.C. - - -) C.P. - - -) - Previous Quarter. C.C. - - -) C.P. - - -) - Six Months. - - - - SILENCER CRACKLES. June Quarter. C.C. 2 - 2) C.P. 2 - 2) 4 Previous Quarter. C.C. 7 - 7) C.P. 6 - 6) 13 Six Months. 17 - 17 17 | ||