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).
Test results for the 'SS' Axle Control Damper, specifically regarding the air vent design.
| Identifier | ExFiles\Box 16\4\ Scan045 | |
| Date | 17th November 1928 | |
| x7520 Hs{Lord Ernest Hives - Chair}/Rn{Mr Robinson}2/LG17.11.28. x7420 To R.{Sir Henry Royce} from Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson} c. to BJ. Wor.{Arthur Wormald - General Works Manager} c. to E.{Mr Elliott - Chief Engineer} DA.{Bernard Day - Chassis Design} c. to BY.{R.W. Bailey - Chief Engineer} 'SS{S. Smith}' AXLE CONTROL DAMPER TO N. SCH. 2635. From our tests so far there does not seem to be any difficulty in making this damper work. We find that we can only have one air vent, that over the high pressure valve. This is because we only replenish on the upward stroke of the piston, therefore xx if we have an air vent on the downward stroke we get lost motion. Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson} | ||