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).
The design of the Goshawk valve rocker lever without a roller.
| Identifier | ExFiles\Box 48\4\ Scan075 | |
| Date | 5th July 1922 | |
| To BY.{R.W. Bailey - Chief Engineer} from E.{Mr Elliott - Chief Engineer} c. to CJ. Wor.{Arthur Wormald - General Works Manager} c. to ns.{Norman Scott} EP.{G. Eric Platford - Chief Quality Engineer} V4226 E4/M5.7.22. GOSHAWK VALVE ROCKER LEVER WITHOUT ROLLER X.4226. We send you herewith drawing No.LeC.1608 giving the particulars of the above. You will notice that a plain bush has been used in the rocker of fairly stiff proportions and fixed by a bronze taper pin which is reamed off flush in the bore. The lubrication holes in the rocker are carried straight through the bush and a single oil feed hole is used in the shaft in an intermediate position between the lubrication holes in the rocker. The rubbing end of the rocker should of course be hardened as well as the tappet rod end. The tension side of the rocker has been made stronger than the compression side on the boss by carrying round a rib from one side to the other. The radii joining the levers to the boss should be of generous proportions. E.{Mr Elliott - Chief Engineer} | ||