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).
Suitability of rubber component dimensions for hydraulic shock dampers.
| Identifier | WestWitteringFiles\P\July1926-September1926\ Scan034 | |
| Date | 17th July 1926 | |
| R.R. 235A (100 'I) (S H.{Arthur M. Hanbury - Head Complaints} 159 11-8-20) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2800 TO HS.{Lord Ernest Hives - Chair} FROM DA.{Bernard Day - Chassis Design} ORIGINAL DA{Bernard Day - Chassis Design}2/M17.7.26. X235 X8520 HYDRAULIC SHOCK DAMPERS. With reference to HS{Lord Ernest Hives - Chair}/RM{William Robotham - Chief Engineer}1/LG13726., in shewing the clearance we did on N. scheme 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. scheme 2222., the spring clips do not enter much into the question as the rubber has 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} | ||