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).
Noise issues with an American-made car heater/de-mister and requesting performance test feedback.
| Identifier | ExFiles\Box 108\1\ scan0334 | |
| Date | 11th February 1938 | |
| To Rm{William Robotham - Chief Engineer}/IMW.{Ivan M. Waller - Head of Chateauroux} from Rm{William Robotham - Chief Engineer}/Std. (Chateauroux) 600a Rm{William Robotham - Chief Engineer}/Std.5/MH.{M. Huckerby}11.2.38. CAR HEATER & DE-MISTER - 26.G.VI. We have noted your remarks about the noise, both mechanical and hydraulic, associated with the above apparatus. We were aware of same before the car left England, but had no chance to remedy same even had we been able to do so. As both heater and de-mister are of American origin and we are not contemplating standardising either, this noise is of no importance, except as a defect to be watched for and avoided on any heater we may contemplate standardising. You can, however, obtain some useful information for us from the installation by carrying out tests to answer the following questions. (1) If kept running continuously under any cold conditions you may experience, is the heater adequate, more than adequate or less than adequate to maintain a comfortable temperature in the car (assuming windows only open sufficiently to give minimum necessary ventilation). (2) If heater is more than adequate for (1) is the range of control on the rheostat sufficient. (3) If car is run with windows closed on a cold day, will de-misting device keep the screen clear of mist (under conditions when it would otherwise steam up). (4) If car is run with windows closed on a day when ice is forming on windscreen, (should such conditions be met) does de-misting device help to prevent this ice formation. The answer to these questions will help us very much with work on a combined heater and demister peculiarly suitable for R.R. cars. Rm{William Robotham - Chief Engineer}/Std. | ||