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).
The specifications, installation, and removal of the torque reaction damper for the Goshawk 11 engine.
| Identifier | ExFiles\Box 74\4\ scan0086 | |
| Date | 26th September 1923 | |
| X.4615. X4604 To BY.{R.W. Bailey - Chief Engineer} from E.{Mr Elliott - Chief Engineer} c. to CJ. Hs.{Lord Ernest Hives - Chair} E1/M26.9.23. 113 GOSHAWK 11. ENGINE. TORQUE REACTION DAMPER AT FRONT END - PERMANENT SCHEME X4604 X.4615 We send you herewith LeC.1774 shewing the above. We have specified springs of 100 lbs. load on the drawing, and assume that the static co-efficient of friction will be about .5. This gives a damper load of 100 lbs. and corresponds to a torque of approximately twice the engine torque. The dampers thus loaded are supposed to represent rigid front feet on the engine which will only slip under influence of frame distortion. Stronger or weaker springs may be used as dictated by the requirements of the experiment. To accommodate the dampers in the frame it will be necessary to move back the first strengthening rib of the undershield, and the first pair of securing clips about .750" towards the rear end of the chassis. Also the stays in the frame must be so arranged that they do not prevent the removal of the damper bolt through the discs. It will be necessary also to move the mud-guard stay forward about .5" to clear the damper, and the wiring tubes must be dropped and brought under the damper as shewn on the drawing. As regards dismantling the power unit when it is desired to drop the engine out of the frame, the outer plates of the dampers must be removed by undoing bolts A, B, and C on the drawing. Bolt D.{John DeLooze - Company Secretary} should then be loosened, enabling the damper clips to be pushed along the suspension tube and leaving the latter free to come back for dropping the engine. E.{Mr Elliott - Chief Engineer} | ||