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).
Trial of two car heater patterns for noise levels and service suitability.
| Identifier | ExFiles\Box 137\2\ scan0139 | |
| Date | 23th August 1938 | |
| S/W 1158 Hn{F. C. Honeyman - Retail orders}3/AH.23.8.38. Car Heaters: Rm{William Robotham - Chief Engineer}/Std.5/MH.{M. Huckerby}11.8.38. ----- We have now tried the two heaters as suggested by you and agree that the S2.CA pattern mounted on rubber in the sample cabinet is reasonably silent and we believe it will be acceptable when so mounted. But to make quite sure we are going to have it put into a car so it can be tried under service conditions. We are returning the S2.RA heater to you. Hn.{F. C. Honeyman - Retail orders} | ||