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).
Further improvements and design modifications for hydraulic shock dampers.
| Identifier | ExFiles\Box 29\1\ Scan227 | |
| Date | 10th June 1926 | |
| x457 TO HS.{Lord Ernest Hives - Chair} FROM R.{Sir Henry Royce} R14/M10.6.26. Copy to -BJ. " WOR.{Arthur Wormald - General Works Manager} " BY.{R.W. Bailey - Chief Engineer} " DA.{Bernard Day - Chassis Design} RR. PATTERN HYDRAULIC SHOCK DAMPERS - (FURTHER IMPROVEMENTS) -X.235. It will be realised that these should never be fitted single acting, either to the front or back axles, but the proportion should be from 30% to 50% upwards, compared with the 100% rebound damping force. We have sent you to-day a modified design where- in there is always from the period of rest a slight amount of free movement without damping. We do not anticipate that this will noticeably alter the efficiency of these shock dampers in reducing high speed steering wobbles, but it should be carefully noted whether it does so. It might demand a rather stiffer spring to control the double acting valve. The great advantage of this arrangement is that it is much less liable to knock in the connecting link joints. It also should permit the car to ride over small irregularities more smoothly. R.{Sir Henry Royce} | ||