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).
Proposed modifications to the Goshawk-11 rear shock absorber and connecting rod.
| Identifier | ExFiles\Box 79\2\ scan0020 | |
| Date | 12th April 1922 | |
| To BY.{R.W. Bailey - Chief Engineer} from Da.{Bernard Day - Chassis Design} c. to CJ. c. to Wor.{Arthur Wormald - General Works Manager} c. to Ms. Le CanadelHenry Royce's French residence. Da{Bernard Day - Chassis Design}3/M12.4.22. GOSHAWK-11 REAR SHOCK ABSORBER. X.4329. We send you herewith N.sch.1282 shewing the proposed modifications to the rear shock absorber to prevent toggling, and also shewing the are new connecting rod on the lines of the 40/50. It will be seen that the latter is exactly like the front connecting rod except for the length, but we have had to shorten the ends and reduce the width of the boss for carrying the lubricator in order to get the lubricator in, and we suggest that these modifications should also be carried out on the front rod. We do not think that the lubricator is any more accessible than the position on N.sch.1230, but we presume the objection to the latter is that it lubricates one ball more than the other. It will be seen that the minimum between the rod and the lever at the maximum possible position of the spring is 40° which will prevent the possibility of toggling. This angle of 40° also assumes that the connecting rod is ¼" too short owing to the wrong rod being used in error. On N.sch.1230 we gave you 3 lengths to provide for the various springs. We are not sure this is enough but we are giving it you again, and we should be glad if you would tell us if you find that it is inadequate or could be improved in any way. Though we believe that these modifications overcome the objections of the shock absorber as it now is, we have a further suggestion namely, contd:- | ||