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).
Shock absorber governor pressure readings taken from car 37-EX, with suggested check values.
| Identifier | ExFiles\Box 95\4\ scan0079 | |
| Date | 19th January 1937 | |
| To Mx.{John H Maddocks - Chief Proving Officer} from Rm{William Robotham - Chief Engineer}/Les.{Ivan A. Leslie} 342 Rm{William Robotham - Chief Engineer}/Les.6/AP.19.1.37. We have taken the following shock absorber governor pressures from 37-EX. | M.P.H. | Min. lbs/sq." | Max. lbs/sq." | |---|---|---| | 10 | 1.0 | 25.0 | | 20 | 1.5 | 25.0 | | 30 | 2.0 | 25.5 | | 40 | 3.5 | 26.5 | | 50 | 5.0 | 28.0 | | 60 | 6.0 | 29.0 | | 70 | 8.0 | 30.5 | I suggest that the pressures need only be checked as follows:- Min. 10 m.p.h. 1 1/2 lbs/sq.in. (MAX.) 70 m.p.h. 8 lbs. ± 2 lbs. Max. 10 m.p.h. 25 lbs. ± 1 lb. Rm{William Robotham - Chief Engineer}/Les.{Ivan A. Leslie} | ||