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 specifications and modifications for a remote-controlled shock damper.
| Identifier | ExFiles\Box 178\3\ img121 | |
| Date | 19th March 1932 | |
| FY. FROM DA.{Bernard Day - Chassis Design} C. to SG.{Arthur F. Sidgreaves - MD} WCR. HS.{Lord Ernest Hives - Chair} DA{Bernard Day - Chassis Design}1/W19.3.32. X-7520 P. 2. - DAMPER WITH REMOTE CONTROL. Herewith we send M.{Mr Moon / Mr Moore} sch. 3450., showing the layout of the rear shock damper suitable for remote control. The damper is exactly like J.{Mr Johnson W.M.} 3. The length of the lever - 12" - was stipulated by R.{Sir Henry Royce} We have gained a little angle by causing the ball end to approach the battery crossmember a small amount, so that the clearance between this member and the heelboard is approximately the same. It will be seen that in this way we have provided for a maximum rebound of 9", which we understand is considerably more than has been obtained by actual experiment. We should like the length of the counterbore in the cylinder barrel to be reduced to 2" on all dampers for all cars. This counterbore is provided to facilitate machining in view of the gap at the opposite side. If it is no facility we should be pleased to remove it altogether. In view of R's instructions we should like to adhere to the 12" lever, in any case for the first experiment, even though it may be considered that the allowances for bump and rebound are not sufficient. [Signature] EA. | ||