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).
Use of mild steel instead of saw steel for front engine mounting damper plates on the Peregrine engine.
| Identifier | ExFiles\Box 2\10\ 10-page17 | |
| Date | 12th January 1933 | |
| BY.{R.W. Bailey - Chief Engineer} from Hs{Lord Ernest Hives - Chair}/Les.{Ivan A. Leslie} c. E.{Mr Elliott - Chief Engineer} c. HIC. FRONT ENGINE MOUNTING. PEREGRINE. LEC.3285. We see that Lec.3285 asks for the outer plates of the torque reaction dampers P.100713 to be made from saw steel. At the time there was, we believe, considerable doubt as to whether this material was necessary. For the last 10,000 miles test in France, mild steel damper plates were fitted to the engine mounting Hs.{Lord Ernest Hives - Chair}740. The same engine mounting has also done 80 hrs. on the damper chassis. In both cases the mild steel damper plates were satisfactory. In view of the small load that these dampers are given and the fact the dampers on the engine mounting Hs.{Lord Ernest Hives - Chair}740 are very similar in design to the dampers on Lec.3285, we think the saw steel is unnecessary. For further tests in France on Peregrine and J.2. we should like mild steel to be used for the torque reaction damper plates. Hs{Lord Ernest Hives - Chair}/Les.{Ivan A. Leslie} | ||