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).
Required improvements and cost adjustments for radiator matrices from John Marston Limited.
| Identifier | ExFiles\Box 149a\2\ scan0209 | |
| Date | 29th June 1934 | |
| Rm{William Robotham - Chief Engineer} Roy.{Sir Henry Royce} c. Hs.{Lord Ernest Hives - Chair} x4516 BY.1/G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 29.6.34. RADIATOR MATRICES - CHASSIS. With reference to Roy.{Sir Henry Royce}7/MG.27.6.34. and copy of John Marston Limited's letter of the 26th inst., we are definitely in agreement that we require all the improvements, i.e. with the additional process and increased inspection, and since this means increased cost we shall have to face it providing you are satisfied that the increase is a reasonable one. Looking at the items as they increase, personally I should think the increased charges are reasonable, in any case they are worth while to prevent the failures which we are experiencing with radiators on test, and which we are afraid may also occur in practice. To make our requirements clear, our requisition should be as follows :- (1). Mark lll type matrices. (2). To have an additional scarifying process introduced in the course of the production of the strip metal. (3). To introduce two additional inspections on the surface of the finished material. (4). To maintain the present sizes of strip, but to tin the strip forming the waterways. The last item is apparently not included in their price, but we think it should be, and the necessary cost adjustment must be made. We would like to have any comments that the Marston people may make in regard to the tinning of the Mark lll strip, but we ourselves can see no disability in it, and providing they do not, then we should go ahead. With regard to the Mark V.{VIENNA} this is a purely experimental affair, but I have agreed with them that what they require is .006 tinned strip for the waterways and .004 untinned strip for the indirect cooling elements. BY.{R.W. Bailey - Chief Engineer} | ||