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).
Method for lacing Ferodo material to a bonnet as a noise-reducing rest.
Identifier | ExFiles\Box 74\1\ scan0179 | |
Date | 19th April 1921 | |
To BY from DA.{Bernard Day - Chassis Design} c. to HS.{Lord Ernest Hives - Chair} c. to TB (1 print). c. to MSTL (1 print). X4340 DA{Bernard Day - Chassis Design}4/CB11-4-21. X4340 RE FERODO AS BONNET REST. (laced) As promised in our previous memo we send herewith a further suggestion for fitting Ferodo Bon Rest to the side angles of the bonnet by an interlacing method without the danger of picking up the ferodo in closing the bonnet. The suggestion is shewn on "N" Scheme 827 - three blue prints herewith. We propose that the ferodo should be laced in four places, but it might conceivably be run all the way along if found desirable. We have drawn this in connection with the scheme in which the brass wearing strips on the inside of the bonnet are dispensed with for the sake of uniformity with our previous scheme. But we are of opinion that it should not be necessary to use ferodo along the bottom edge of the bonnet at all. It is not so used in any other case except that the old Packard uses leather, and is arranged in a way we consider to be objectionable, and the fact that the bonnet is gripped by the springs along the bottom edge will, we think, prevent noise coming from that part, the bulk of the noise undoubtedly coming from the top and sides. Therefore, though we send this suggestion along we think it would be desirable to proceed with the scheme in which the brass wearing piece is left on the bottom of the bonnet, and no ferodo at all is used along there. DA.{Bernard Day - Chassis Design} | ||