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).
From E. to D.A. detailing Mr. Royce's suggestions on alternative schemes for bracket tubes and frame connections.
| Identifier | WestWitteringFiles\E\November1920\ Scan8 | |
| Date | 1st November 1920 | |
| To D.A. from E.{Mr Elliott - Chief Engineer} -3- E1/G6/11/20 Contd. (7) Mr. Royce would like an alternative scheme prepared in which the bracket tubes are pinned and brazed directly in to the forgings making connection with the frame and the crossmember. He thinks that in spite of the awkward angles this scheme may be found more practical, and less heavy than the pin joints, also possibly less likely to give trouble. (8) The bracket tube stampings on the frame should be lightened by cutting away metal from the palm in between each pair of bolts, as in sketch - [Hand-drawn sketch of a four-lobed bracket with a square hole in the center and bolt holes in two of the lobes] Mr. Royce intends that in the machining operations on these brackets the boring for the bolt shall be done after the square hole through the bracket has been broached, the broaching being done after the back of the stamping has been faced. The object is, of course, to get the bore square with the faces for the pin joint. (9) Referring to Scheme N.394, the large number of pegs shewn in the cross member fitting is thought by Mr. Royce to be unnecessary, and he would like a considerable reduction made. The stamped clips for carrying the longitudinal members should have the bolt bosses lengthened on the tube side until they are as long as those on the cap. In this case Mr. Royce thinks that the feature may be retained for preventing the bolt turning, as it costs nothing. The bosses should be lightened by being cut away in the centre, as shewn on the bracket tube clamps. E.{Mr Elliott - Chief Engineer} [Illegible stamp/initials] | ||