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).
Necessity of replenishing pipes for hydraulic dampers, concluding they are an unnecessary complication.
| Identifier | ExFiles\Box 16\5\ Scan027 | |
| Date | 9th October 1931 | |
| To R.{Sir Henry Royce} From Hs.{Lord Ernest Hives - Chair} c. to SE. For. c. to E.{Mr Elliott - Chief Engineer} Da.{Bernard Day - Chassis Design} c. to By.{R.W. Bailey - Chief Engineer} X7520 Hs.{Lord Ernest Hives - Chair}1 /MJ.9.10.31. X.235. X.7520. X.5520. HYDRAULIC DAMPERS REPLENISHING PIPES. From our experience on experimental cars, and also reports from Service Stations, we cannot say that replenishing pipes to the hydraulic dampers are essential. We do not get leaks from our dampers at all unless there is a definite fault. 19-G4. has just completed 16,000 miles and we can measure no loss of oil in the dampers. 25-EX. completed 20,000 miles with no appreciable loss. The most serious fault for causing leaks from the damper is when the replenishing valve sticks. On the latest dampers, however, this has a cast iron seat instead of aluminium and we think this should overcome the trouble. We consider, therefore, that to add replenishing pipes in the dampers would be an unnecessary complication. Hs.{Lord Ernest Hives - Chair} | ||