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).
Letter regarding a defective reconditioned Phantom III oil cooler being returned due to excessive machining.
| Identifier | ExFiles\Box 131\5\ scan0048 | |
| Date | 18th January 1938 | |
| 1114 RM{William Robotham - Chief Engineer}/Std.15/WH. 18th. January 1938. Messrs. John Marston Ltd., Wolverhampton. For the attention of Mr. Dunn. Dear Sirs, We are arranging to return to you a Phantom III reconditioned oil cooler No. F.185 which you will note has a defective union seating face. From the appearance and from the small depth of the shoulder of the seating it is almost certain that so much has been machined off this face that it is doubtful whether there is any thickness of pressing left. This is obviously entirely unsafe and we should like to have your remarks on the subject. We cannot see why it should be necessary to remove so much metal. We have part sectioned the top plate in order to examine the sectional thickness. In any case we cannot, of course, fit such a cooler to any car, and are returning this one to you for a new top plate to be fitted. In order to guard against any coolers being fitted which are unsafe in this manner we are instructing our Inspector to check each cooler dimension from top of union face to shoulder of pressing (see attached marked up print). If this dimension is less than .084 (i.e. this means a pressing thickness on seat of only .032) the coolers will be rejected. You will agree that this is necessary if any further trouble in service with oil coolers is to be avoided. | ||