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).
Rubber compression and clearance for hydraulic shock dampers.
| Identifier | ExFiles\Box 68\2\ scan0171 | |
| Date | 17th July 1926 | |
| To Hs.{Lord Ernest Hives - Chair} from Da.{Bernard Day - Chassis Design} 48520 Da{Bernard Day - Chassis Design}"2/M17.7.26. HYDRAULIC SHOCK DAMPERS. X.235 X.8520 With reference to Hs{Lord Ernest Hives - Chair}/Rml/LG13.7.26;. in shewing the clearance we did on N.sch.2222 we followed standard practice, namely, that the rubber is compressed .750" on the full bump. We understand from your note and from the dimensions you propose that this practice is not found suitable. With the 2.1 dimension the rubber is only slightly compressed by the spring clips and is not apparently reached by the flat top of the sheath. In the rubber buffer on N.sch.2222 the spring clips do not enter much into the question as the rubber has g been shortened and the first part to hit effectively is the little cover over the spring centre bolt nut.. We also think that because the rubber is rather smaller in volume it will jelly more, and some allowance should be made for this. Therefore we suggest that before you finally decide on 2.1 a rather greater depth of rubber should be tried first. DA.{Bernard Day - Chassis Design} | ||