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).
Findings on shock damper poundage and control settings for the Phantom III, models 35-EX and 32-EX.
| Identifier | ExFiles\Box 91\2\ scan0186 | |
| Date | 26th July 1937 | |
| CHATEAUROUX. Rm{William Robotham - Chief Engineer}/IMW{Ivan M. Waller - Head of Chateauroux}/3/JAB.26.7.37. To. Rm.{William Robotham - Chief Engineer} [REDACTED] 32-EX. PHANTOM III. Shock Damper Poundage. Thank you for your memo Rm{William Robotham - Chief Engineer}/3/R.23.7.37. We have found both on 35-EX. & 32-EX. that the car remains stable whether the hand control is on "soft" or "hard", that is to say we find no difficulty in keeping the car on the road on rough surfaces wherever we put the control. It does however make a considerable difference to the comfort under varying conditions, and on many roads a reduction from the standard maximum of 40 lbs/sq" to 30 lbs/sq" noticeably increases the amount the occupants are thrown about and the frequency with which the axle hits the buffers. On other kinds of wavy surfaces, the ride is best at maximum speed with the control on "soft" and the handling of the car still just as good. To sum up we consider that the present range of control is well chosen to cover all conditions likely to be met with, and that any reduction in the maximum poundage would under many circumstances detract from the comfort and cause more frequent hitting of the buffers, but not upset the safety or handling of the car. -------- Rm{William Robotham - Chief Engineer}/IMW.{Ivan M. Waller - Head of Chateauroux} Frank. Waller. | ||