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).
Modifications to the 40/50HP Phantom Chassis raised rockers, including a list of replacement parts.
| Identifier | ExFiles\Box 66a\2\ scan0224 | |
| Date | 10th March 1927 | |
| 48090 C. to Hs.{Lord Ernest Hives - Chair} BY/CS1/DB.{Donald Bastow - Suspensions}10.3.27. Re 40/50HP Phantom Chassis - Raised Rockers. Sec:5060. Please receive herewith one print of each of the following drawings, detailed from Scheme 896:- E.76019/30-Rocker Arms, which replace E.70211 & E.70212. E.76021 - End Pedestal, which replaces E.70215 E.76022 - Key. E.76023 - Push Rod, which replaces E.73540. E.76024 - Stud, which replaces E.70549. E.76025 - Stud, which replaces E.70548. E.76026 - Stud, which replaces E.70925. E.76027 - Centre Pedestal, which replaces E.71343. E.76028 - Dowel. E.76029 - Distance Piece. E.76030 - Distance Piece. Scheme 896 - Valve Rockers raised .125" Will you please instruct up one set of these parts, together with one set of - E.8054 - Screw - 4 off. E.70928 - Stud - 4 off. and completed with the remaining parts to std: LOP. It will be noticed that we have lifted the Rocker shaft .125 by inserting packings under the rocker pedestals, in order that the centre line of the rocker shaft is horizontally in line with top of valve spindle, also reduced the radius of rubbing face of valve spindle end of rocker, which brings the point of contact nearer the vertical centre line of the valve, also reduces the path of contact across valve spindle end. - the object [STAMP] Hs{Lord Ernest Hives - Chair} MAR 10 1927 RECEIVED | ||