Test results and instructions for a Wraith III exhaust system corrujoint, including annealing and coating procedures.
| Identifier | ExFiles\Box 8\8\ 08-page89 | |
| Date | 10th May 1939 | |
| 625 To: RHO. Roy. {Mr H. Royce - Buyer} LB. Wa. {Mr Wallis} Ra/wyn Dy {F R Danby} /CS. c. to Mx. {John H Maddocks - Chief Proving Officer} WRAITH III EXHAUST SYSTEM CORRUJOINTS The test carried out by Mx {John H Maddocks - Chief Proving Officer} on 27.3.VI, using an annealed corrujoint which had the grooves packed with graphite paste, has proved satisfactory. The graphite has prevented the joint washer from collapsing and thus maintained a seal, and the bolts remained tight. Will you therefore anneal the stock of corrujoint washers at a temperature of 850°C to 875°C and then cool in air. During erection the joints should be well coated with graphite compound DIXOLINE. A 10 lb. tin of DIXOLINE has been ordered by 'phone from T.Crump & Co. Derby. This will be passed over to the Works when it arrives. Will Roy {Mr H. Royce - Buyer} please issue the official order to cover the above. AY/MS. | ||
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).