Query regarding the fan drive ratio compared to a Buick, with the goal of reducing fan noise.
| Identifier | ExFiles\Box 135\4\ scan0079 | |
| Date | 29th October 1940 | |
| Rm {William Robotham - Chief Engineer} /Clm. {D. D. Clapham} From Rm. {William Robotham - Chief Engineer} Handwritten: Fan - general, 1135 Rm. {William Robotham - Chief Engineer} 8/ML.29.10.40. I note that the fan drive ratio is almost 1/1 to reduce fan noise, on the Buick. What is our present figure? Rm. {William Robotham - Chief Engineer} | ||
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).