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 from S. Smith & Sons regarding a delay in producing a sample heater and discussing test results and alternative designs.
| Identifier | ExFiles\Box 137\2\ scan0212 | |
| Date | 9th November 1938 | |
| 105 1158 WLR/RS{Sir Henry Royce's Secretary} CONTRACTORS TO ADMIRALTY, WAR OFFICE & AIR MINISTRY TELEPHONE: GLADSTONE 3333 (20 LINES) TELEGRAMS: SPEEDOFAC, PHONE, LONDON. CABLES: SPEEDOFAC, LONDON. CODES: MARCONI,COMMERCIAL,BENTLEY'S. S. Smith & Sons (Motor Accessories) Ltd CRICKLEWOOD WORKS LONDON, N.W.2 Please quote our reference: S.10. 9th November, 1938. Messrs. Rolls-Royce Ltd., DERBY. For the attention of Mr.C.S.Steadman. Dear Sirs, We certainly must apologise for not having produced the sample Heater which you asked for some time back - we are referring to the remote motor type. Nevertheless we have not actually lost time, a considerable amount of development work has been done and we would claim your indulgence a little longer so that we can complete the drawings of a somewhat more advanced design and of the built-in type, which we should like to put before you in about a fortnight's time. Regarding the test which you made on one of your test cars when the blower was arranged under the seat, it has just occurred to us that as the motor was arranged vertically it is a point which must be borne in mind as these motors are only intended for horizontal operation - a thrust bearing would have to be introduced for vertical operation. We are not suggesting that this was the cause of noise in the case under consideration as, of course, you re-tested the Heater separately, but it is undoubtedly wrong and must be taken into consideration in any finished design. In the meantime, we have pleasure in enclosing you the 1939 HaDees Heater leaflet and would ask you to study the Airolating scheme described on page 4. There is an automatic arrangement of flap valves which has much to commend it when the air is taken from the outside. It is this scheme which we are developing and it will not necessarily cost more than the standard job. Contd. | ||