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).
Engine silencing and the costs of sound insulation for the chassis floor and bodywork.
| Identifier | ExFiles\Box 104\2\ scan0175 | |
| Date | 28th February 1936 | |
| Hs.{Lord Ernest Hives - Chair} c.Wor.{Arthur Wormald - General Works Manager} By.{R.W. Bailey - Chief Engineer} Da.{Bernard Day - Chassis Design} RHC.{R. H. Coverley - Production Engineer} Sft.{Mr Swift} E.6/HP.28.2.36. Chassis Costs. With reference to E/Lid.{A. J. Lidsey}1/HP.28.2.36, it looks as if our engines are difficult to silence, and looks as if a larger and woollier type of engine doing the same amount of work would be more amenable in this respect. Alternatively I think we ought to know how much sound insulation of the floor portion of the car is going to help us. What I mean is that we ought not to need both expensive lagging on the silencer and extensive lagging of the bodywork, and in view of the latter being required for other noises in addition to those of the exhaust we should then be able to reduce the former. Experiments made running with the floorboards up on some of the American cars we have here would probably confirm this point. E.{Mr Elliott - Chief Engineer} | ||