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 design fault causing air re-entry and system chatter.
| Identifier | WestWitteringFiles\O\2January1926-March1926\ Scan67 | |
| Date | 2nd February 1926 guessed | |
| contd :- -2- Unfortunately, if the shock absorber is inverted or run on the road, air seems to re-enter this chamber either from the filling chamber or from somewhere else in the system where it has been trapped, and the chatter returns. The main trouble appears to be that air prefers to collect in the high pressure valve chamber, owing to its location, rather than to pass out by the leak provided in the design. We have tried all clearances in this leak with no result. In other respects, i.e. oil retention etc., these shock absorbers have so far functioned very well on the road. Teir loading at present is :- Load on extremity of lever to move same. ----------------------------------------- High pressure - 150 lbs. Low pressure - 30 lbs. ----------------------------------------- Hs{Lord Ernest Hives - Chair}/W. A.{Mr Adams} Robotham. | ||