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).
Mr. Royce's design points for the N. Scheme 383 shock damper.
| Identifier | WestWitteringFiles\E\June1920\ Scan26 | |
| Date | 14th June 1920 | |
| To DA.{Bernard Day - Chassis Design} from E.{Mr Elliott - Chief Engineer} Copy to C.J. " " DN. " " HS.{Lord Ernest Hives - Chair} " " BY.{R.W. Bailey - Chief Engineer} " " EPC. ORIGINAL CHASSIS RECEIVED RE SHOCK DAMPER - 40/50 H.P. CHASSIS. X.39126. N. SCHEME 383. With reference to N. scheme 383, would you kindly note the following points which Mr. Royce raises. He would like the special device for assembling the shock damper cancelled if possible, as it is not clear why the shock damper cover nut itself cannot be used for this purpose, or the lever and nut for same, the latter piece being tightened on to the spindle while the spindle is retained by means of a set screw screwed into the extension of the petrol tank tube. Mr. Royce would like to avoid using the annulus in the shock damper cover surrounding the bush, because it cuts away such a lot of surface, and thinks that instead the bush should be prevented from turning by a pin, the hole for this being drilled through the flange of the bush, and then half in the aluminium, and half in the bush. The flange should be made larger in diameter and the bush thicker, for this purpose. The pin can be a parallel piece of wire locked in position by caulking. The groove on the inside of the bush should be of spiral form, making one complete revolution, the outer end being blind and the inner end running through into the shock damper case. The groove can be produced by thread milling. Mr. Royce does not think the possibility of the lever fouling the greaser on the shock damper cover will give rise to any trouble, and does not think it worth while to dowel the cover in one position. The scheme of lubricating by oil, shewn in fig. 2 (Contd.) | ||