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 discussing weight variations in Bentley matrices, comparison to Harrison products, and supply of Mk. VI cores.
| Identifier | ExFiles\Box 150\3\ scan0075 | |
| Date | 22th October 1936 | |
| -2- We would mention that the 52 m.m. Harrison block which we have weighs 26 lbs., so that your lightened Bentley block appears to be lighter than the Harrison product If you think that anything could be learnt from it we could return the Bentley 52 m.m. block, which you have just sent us, for your examination. Again we are not satisfied with the variation of weight of our standard Bentley Mark V 58 m.m. matrices. About a year ago the question of Bentley matrix weight was taken up with you and the average weight of the Bentley matrix then 8.8.35 was 31.5, the maximum variation in weight being about 2.5 lbs. The writer weighed six standard Bentley matrixes recently, 22.10.36., and the average figure was 33 lbs., the matrices varying between 30 3/4 and 34 3/4 lbs. i.e. a variation of 4 lbs. We should like to know whether you can reduce this unnecessary weight variation and also why the average weight figure has gone up by 1.5 lbs. You mentioned in your last letter that the price of a lightened Mark VI matrix would be the same as that of the standard type of Mk. {R. E. B. Meade King} VI core, this rather conflicts with the statements of Mr. Dunn when we last discussed this question of using the thinner material at Wolverhampton. We should like to know whether you are making any arragments to obtain Harrison Radiation Corporation plant for the manufacture of their matrices. Has Mr. Dunn obtained anything new from them? and also whether you are yet in a position to supply Mk. {R. E. B. Meade King} VI cores in quantity (i.e. for Bentley and 25/30 H.P. cars). Can you give us a price estimate for the supply of the following. (1) Bentley matrices to our standard drawing, but in 52 m.m. Mark VI core using the .005 water way and .003 airway strip. | ||