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 breakdown of exhaust system complaints and their remedies over two quarters.
| Identifier | ExFiles\Box 130\1\ scan0029 | |
| Date | 31th March 1933 guessed | |
| - 6 - TABLE HEADERS: 20 HP. 25 HP. PH.I. PH.II TOTAL. GRAND TOTAL. REMARKS. SECTION: TOTAL EXHAUST COMPLAINTS. - March quarter. C.C.: -, 13, 5, 31, (49) W.P.: 1, 12, -, 34, (47) Grand Total: 96 - Previous quarter. C.C.: 3, 17, 7, 40, (67) W.P.: 1, 7, 1, 27, (36) Grand Total: 103 - Six Months Totals: 5, 49, 13, 132, 199, 199 SECTION: EXHAUST MANIFOLD CRACKED OR BROKEN. - March quarter. C.C.: -, 7, 1, 1, (9) W.P.: 1, 7, -, 1, (9) Grand Total: 18 - Previous quarter. C.C.: 3, 8, -, 1, (12) W.P.: 1, 3, 1, 1, (6) Grand Total: 18 - Six Months Totals: 5, 25, 2, 4, 36, 36 SECTION: EXHAUST SILENCER CORRODED. - March quarter. C.C.: -, -, 2, -, (2) W.P.: -, -, -, 2, (2) Grand Total: 4 - Previous quarter. C.C.: -, 1, 3, -, (4) W.P.: -, -, -, 2, (2) Grand Total: 6 - Six Months Totals: -, 1, 5, 4, 10, 10 SECTION: EXHAUST BLOWS GENERALLY AND CUTOUT SEIZED OR RATTLE. - March quarter. C.C.: -, 6, 2, 30, (38) W.P.: -, 5, -, 31, (36) Grand Total: 74 - Previous quarter. C.C.: -, 8, 4, 39, (51) W.P.: -, 4, -, 24, (28) Grand Total: 79 - Six Months Totals: -, 23, 6, 124, 153, 153 REMARKS COLUMN: - For 'Exhaust Manifold...': 20 HP. and early 20/25. - Exhaust Manifolds with cooling fins are now available. No failures of this type yet reported. Depot Sheet Hd.{Mr Hayward/Mr Huddy}229. PH.I. - Expansion allowance now increased and 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. - For 'Exhaust Silencer...': All silencers are now being Parkerised and a longer life is expected. - For 'Exhaust Blows...': 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. Cutout seizure on Ph. II is having attention of Design Dept. HANDWRITTEN NOTE: Can we get further information as to how this happens | ||