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).
Statistical report on customer exhaust system complaints for various models over a six-month period.
| Identifier | ExFiles\Box 47\3\ Scan429 | |
| Date | 1st March 1932 guessed | |
| -7- 20 HP. 25 HP. PH.I. PH.II. TOTAL. GRAND TOTAL. REMARKS. TOTAL EXHAUST COMPLAINTS. March Quarter. C.C. 7 27 5 34 73 } W.P. 24 20 6 29 79 } 152 Previous " C.C. 31 54 11 42 138 } W.P. 11 7 3 21 42 } 180 Six months. 73 108 25 126 332 332 EXHAUST MANIFOLD CRACKED OR BROKEN. March Quarter. C.C. 3 7 1 4 15 } 38 W.P. 15 7 - 1 23 } Previous " C.C. 12 15 7 - 34 } 51 W.P. 9 5 3 - 17 } Six months. 39 34 11 5 89 89 20 HP. & Early 20/25 HP - Exhaust Manifolds with cooling fins are now available. Depot Sheet H.229. Ph.I - Expansion allowance now increased & malleable castings available. Also sliding joint type of exhaust manifold being tried out for extreme cases. Ph.II - Flange bosses now thickened up to prevent cracking. EXHAUST SILENCER CORRODED. March Quarter. C.C. - - 3 - 3 } 5 W.P. - - 1 1 2 } Previous " C.C. - 1 3 - 4 } 4 W.P. - - - - - } Six months. - 1 7 1 9 9 Ph.I - Silencers are now being coslettised for replacement purposes. EXHAUST WASHERS BLOWING. March Quarter. C.C. 1 10 - - 11 } 15 W.P. 3 1 - - 4 } Previous " C.C. 8 15 1 1 25 } 26 W.P. - - - 1 1 } Six months. 12 26 1 2 41 41 20/25 HP - New Steel Washers with all copper shell, instead of half brass and half copper, are now available. | ||