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 to John Marstons Ltd. regarding Clayton Car Heaters and radiator core specifications and costs.
| Identifier | ExFiles\Box 150\3\ scan0090 | |
| Date | 16th December 1936 | |
| 1280 H58 Experimental Department 16th December 1936. Rm {William Robotham - Chief Engineer} /Std.4/AP. Messrs John Marstons Ltd., WOLVERHAMPTON For the attention of Mr.Dunn Dear Sirs, Referring to our telephone conversation with Mr.Dunn yesterday, we have examined the Clayton Car Heater which we have here, and judging by the name stamped on its end plate, it is a Klaxon motor. There are one or two matters which we should like you to clear up for us - the writer had been leaving them until his visit to discuss your test results on the new American cores, but it is becoming rather urgent to settle them now, and we should like you to clear up some confusion which has arisen. Our Order Office have notified us that it is possible to save 6/10d. per radiator on the 40/50 car and 4/3d. per radiator on the 25/30. by going to .005" waterways and .004" airways and omitting the tinning of the airway strip - this was also mentioned by Mr.Dunn to the writer. Will you please let us know - (1) What are the thicknesses of strip used on - (a) Our standard Phantom III. core. (b) Our standard 25/30 core. (c) Our standard Bentley core. (2) What the saving would be by making the above mentioned modifications to the Bentley core. (3) Whether the above savings would be in any way affected by using .003 airway strip instead of .004. (4) Whether either of the two Bentley matrices with .005 waterway and .003 airway strip which you sent us recently had untinned airway strip - if so, which.? Continued | ||