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).
The testing and standardisation of Marston radiator matrices for various car models.
| Identifier | ExFiles\Box 150\3\ scan0106 | |
| Date | 31th December 1936 | |
| -2- Rm {William Robotham - Chief Engineer} /Std.7/JH.31.12.36. in the States purchased sample matrices etc., and obtained options on manufacturing rights. He has now returned and the sample matrices are being tested, the tests are practically complete. The question of which matrix Marston's will make will be settled in approximately a fortnights' time and the matrix in question should be available for production use in about four to five months from the present date. As soon as matrices are available, we shall proceed with the necessary tests to prove their suitability for standardisation on all our cars. Meanwhile in view of the above facts, Messrs. Marstons do not wish to extend their facilities for producing Mark VI radiator matrices. We think therefore that we must content ourselves with Mark VI matrices on Ph.III and Bentley and Mark V matrices on 25/30 H.P. cars. However the modification to tinning and strip thickness mentioned above can also be incorporated on the Mark V block for the 25/30 H.P. car. In view of the above, we have the following matrices running on our next two 15,000 miles cars which are going to France within the next few weeks. Phantom III 35-EX. 84 m.m. Mark VI with .005 tinned waterway strip. .003 untinned airway strip. Bentley. 6-B-IV. 52 m.m. Mark VI with .005 tinned waterway strip .003 untinned airway strip In the event of these matrices successfully completing these tests, we shall immediately issue standardisation sheets for them, and also one for the 25/30 H.P. Mark V matrix with .005 tinned waterway strip and .003" untinned airway strip, since we think that the Phantom III and Bentley Mark VI tests clear the new construction (.005 tinned waterway strip and .003 untinned airway strip) for the Mark V type of matrix also. Attached is a sheet showing the estimated savings in weight, improvement in cooling and reduction in cost by using the above mentioned matrices. We have not yet received precise figures for the savings from Messrs. Marstons (these will be forwarded shortly) but they will definitely not be less than the figures quoted. | ||