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).
Conclusions on fitting hydraulic shock dampers to a Phantom rear axle.
| Identifier | ExFiles\Box 16\4\ Scan001 | |
| Date | 4th April 1926 | |
| To DA.{Bernard Day - Chassis Design} Hs.{Lord Ernest Hives - Chair} BY.{R.W. Bailey - Chief Engineer} } FROM R.{Sir Henry Royce} LE CANADELHenry Royce's French residence. c. to CJ. BJ. +7520 R2/M4.4.26. PHANTOM - HYDRAULIC SHOCK DAMPERS ON X.235 REAR AXLE. N.SCH.2166 X.7520 X.8520 Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson} and myself tried various positions for the above with the following conclusions - (1) It could be up in the frame - lever looking rearward. (2) Body in or near petrol tank - suspension lever looking forwards. (3) Special petrol tank to allow body to be between axle and tank cross ways - lever looking outwards. Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson} was going to try to rig up one of these to confirm if we wanted this fitting on the back: conclude that we do and go on until a good place is found. I concluded that the lever must be 12" or under: your 14" is too long. The connecting link should be longer: your 4½" at least 6", but preferably 8", which will help the length of the lever. The stroke inside might be found to control the length of lever, but if the shaft moves 60° then the lever perhaps would do at 12". I thought the damper as made worked over 60°, and that with a long link 11" might be made to work. In the rear it does not matter much if the dampers are nearer together, but it would be useless so fitted at the front. Look to fitting these dampers to EAC.7. - both axles. I would like this chassis to have all the good things on it that are on those we shall be compared it with. R.{Sir Henry Royce} | ||