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).
Reconditioning and supply of Phantom III oil coolers.
| Identifier | ExFiles\Box 131\5\ scan0001 | |
| Date | 1st November 1937 | |
| To Hd{Mr Hayward/Mr Huddy} from Rm{William Robotham - Chief Engineer}/Std. c. RO.{C. C. Rose - Export Manager} c. RH.{R. Hollingworth} c. Ha c. By.{R.W. Bailey - Chief Engineer} 111/H RECONDITIONING OF PH.III OIL COOLERS AND SUPPLY OF NEW PRODUCTION UNITS. In discussion between By, Roy{Sir Henry Royce}, Rm{William Robotham - Chief Engineer}/Std and Mr.Dunn of John Marston Ltd., Wolverhampton, it was agreed - (1) To change hand soldered oil coolers for dipped type. (2) That Messrs. Marstons' would recondition free of charge, hand soldered coolers by removing outer casing and outer row of tubes, cleaning and re-dipping complete unit. (3) That Messrs. Marstons would recondition about five units as per (2) under Rm{William Robotham - Chief Engineer}/Std's supervision, and that these should then be tested, stripped and examined before putting the reconditioning process in action. A depot sheet was accordingly issued by By.{R.W. Bailey - Chief Engineer} for the changing of all coolers on A and B series cars. When Rm{William Robotham - Chief Engineer}/Std visited Messrs. Marstons for the purpose of (3) above, it was noticed that the contours of the casing plates and tube bulges were such that good metallic contact was not obtained, and consequently full solder bond was not guaranteed. This was dealt with in Rm{William Robotham - Chief Engineer}/Std. S/Jn.19.10.37. While no dip soldered oil coolers have yet failed in service on production cars, we have now failed two of this type on the test bed cooler and in each case stripping has indicated that the failure (due to inadequate solder bond) has been attributable to the defect, in metallic contact, mentioned above. In view of this we considered that as far as possible no more coolers should be made until this defect had been corrected. Messrs. Marstons were therefore instructed not to make any further coolers, either new or reconditioned, (unless specially instructed to supply same for purpose of keeping production going) until five coolers had been made up with above mentioned defect corrected and tested, stripped and examined for soundness. We have just heard from Messrs. Marston Ltd., that the parts will be ready for building these five coolers on Thursday next, | ||