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 a consulting engineer regarding the design of shutters for the air-intake and exhaust pipe.
| Identifier | ExFiles\Box 142\3\ scan0157 | |
| Date | 5th March 1937 | |
| 1204. H.{Arthur M. Hanbury - Head Complaints} M.{Mr Moon / Mr Moore} Raht, Consulting Engineer 274 Chiswick Village, London, W. 4 Phone: Chiswick 1214 5th March, 1937. The Rolls-Royce Ltd., (Experimental Dept) Derby. re: Rm{William Robotham - Chief Engineer}/Gry{Shadwell Grylls} 2/R.{Sir Henry Royce} Dear Sirs, Thanking you for your letter of the 3rd inst. I hope I have made it understandable that the air-intake and eventually the exhaust pipe have to be definitely shut when the engine is standing idle in order to attain the results which I have stated and which in fact have been astonishing. I think I must not point out to you a number of different shutter types designed e.g. to suit the different types of carburetters. The same is true for the operating arrangement. The shutters are operated from inside the car e.g. by a handle on or near the instrument board. I think of an operating handle which is so arranged that the shutter device must be opened before the starter can act. If desired a magnetic device | ||