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).
Comparison of the performance and condition of American and British fabric engine couplings.
| Identifier | ExFiles\Box 74\3\ scan0022 | |
| Date | 4th October 1928 | |
| EP.{G. Eric Platford - Chief Quality Engineer} Hs.{Lord Ernest Hives - Chair} C. Worr. Y3435 BY11/G.4.10.28. FABRIC ENGINE COUPLINGS. I think the main difference between the American bulged fabric coupling and our own type is that the bulged scheme does not show so clearly the discrepancies after running. A careful examination of the three samples makes it quite clear that none of our standard type are in actual danger of failing, even the one that has run 6,000 miles could safely be run a further distance of the same amount, as the demand is in tension on the fabric and not in compression. The one which they have turned down as a failure after 350 miles would certainly run as long as the first sample referred to. In regard to the American bulged type, examination of the bulges or space between the two sets of three coupling connections shows as wide a variation in the American as in the British, but in the case of the American since they started with the bulge any further collapse is masked, but it does not mean that the coupling is in a better condition. It would be of interest to have some experiments made to demonstrate whether the American bulged coupling is more elastic or less than the British. It might possibly be more due to the fact that the canvas does not run in the same plane from drive to drive but re-acts on the rubber core, the stress on the fabric is, however, undoubtedly greater. BY.{R.W. Bailey - Chief Engineer} BY | ||