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).
Request for a preliminary arrangement drawing for Phantom II Rear Dampers with handwritten notes on adapting them for a 20 HP model.
| Identifier | ExFiles\Box 16\4\ Scan275 | |
| Date | 25th March 1931 | |
| X7520. [STAMPED] RECEIVED [STRIKETHROUGH] BY/HSD [/STRIKETHROUGH] c. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} BY/SS{S. Smith}12/N.25.3.31. Re: P.II - Rear Dampers. --------------- Will you please prepare as soon as possible a preliminary arrangement drawing, with sufficient views to show clearly the following specification:- (1) Standard P.II Rear Casing complete with main Lever and Shaft. (2) Split Piston and intermediate lever to N.Sch.3262. (3) Cover in cast iron with knife edged valve seat, as shown on Hs.{Lord Ernest Hives - Chair}322. (4) Filter for Air Vent. (5) Leave out non return ball on air vent. (6) Lubrication from Rear Axle system. In connection with N.Sch.3262 (Item 2) the replenishment valves will not be required for this specification. Rm.{William Robotham - Chief Engineer} also recommends the hole for the hardened pads is made with a blind end. Without the non-return valve (Item 5) the design of the valve cover plugs can be simplified. The existing .025 diameter hole should be retained, but the .098 diameter outlet should be drilled normal to the axis. No cleaning plugs will be necessary. [HANDWRITTEN] BY/SS.{S. Smith} Adaptation of 20H.P. front & rear levers to II Case. i.e. 20H.P. levers w/so shafts [STRIKETHROUGH] to [/STRIKETHROUGH] Front damper with hardened bush and lubrication to top pin. Inter lever soft. Lever with knurled end & stiffer if any. economy. Fixing of P.II damper to front of 20H.P. By H.E.B.3 HP 17/3/31 | ||