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).
Design policy for shock dampers, considering a revised design versus a completely new one.
| Identifier | ExFiles\Box 56\1\ Scan081 | |
| Date | 2nd March 1931 | |
| BY. {R.W. Bailey - Chief Engineer} HS. {Lord Ernest Hives - Chair} FROM DA. {Bernard Day - Chassis Design} X238 DA {Bernard Day - Chassis Design} 2/M2. 3. 31. C. to SG. {Arthur F. Sidgreaves - MD} WOR. {Arthur Wormald - General Works Manager} HY. {Tom Haldenby - Plant Engineer} P. 2. SHOCK DAMPERS. X7520 X235 we are in some doubt as to the policy in connection with the above. We have sent you a spring loaded piston, and a method (N. scn. 3229.) of a considerable increase in the dia. of the shaft using existing castings. We are about to start on the design of a completely new damper as we have now had sufficient instructions from R. {Sir Henry Royce} to enable us to do so. In the meanwhile we wonder how urgent the question of a revised damper is in connection with the L.H. chassis. We have made a drawing - N. scn. 3240. - which we send herewith, shewing a greatly increased dia. shaft, and also a larger square in accordance with R2/M23.2.31. This involves a new damper body but follows the existing damper practice and would no doubt be quicker to get going than an entirely new damper, but in R's recent memo. we are instruct- ed {J. L. Edwards} to begin an entirely new damper, and there is some doubt in our minds whether it is worth while going on with N. scn. 3240. Perhaps you will be able to decide. We also send N. scn. 3237. which merely shews the method of lubrication of the bearings from the low pressure side. In other respects it is superseded by N. scn. 3240. It will be understood that on N. scn. 3229. the view on the L.H. side is a completely different proposition as this represents a stiffer shaft using existing castings. DA. {Bernard Day - Chassis Design} | ||