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).
Alternative arrangements and bearing types for the Peregrine Transmission Shaft.
| Identifier | ExFiles\Box 179b\1\ img266 | |
| Date | 14th January 1933 | |
| To. C.G. Mr. Hs.{Lord Ernest Hives - Chair} from DA.{Bernard Day - Chassis Design} DAL/N.14.1.33. Peregrine Transmission Shaft. -------------------------- We have looked further into the question of the arrangement of this unit following your criticism as to cost of the original arrangement as developed in N.Sch.3644. On N.Sch.3650, herewith, we have shown a method of using a standard deep groove ball bearing. It is thought that it may compare favourably with the present arrangement as regards cost and ease of assembly, and is also a unit assembly. We have shown side brackets with a single split for simplicity which requires them to be put loose on the tube before brazing the end flanges. Should there be sufficient reason, a double split bracket with the split horizontal can be used. It is intended that the shaft shall be lined up by swinging the brackets and sliding them along the tube, and then pinning them after clamping. Though we doubt the suitability of a Skefko swivelling bearing, we understand over the telephone that there are tests in existence in connection with aero work which shew a very high resistance to end load from these bearings. (We should like to have a copy of this report). We believe R.{Sir Henry Royce} does not approve of these bearings carrying end load. Nevertheless we have made a scheme (N.Sch.3648 herewith) showing an adaptation for using a Skefko both temporarily for trial and permanently in case Derby's inspection of N.Sch.3650 leads them to think that a Skefko bearing is still to be preferred. We think that N.Sch.3648 should be ignored. DA.{Bernard Day - Chassis Design} | ||