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).
Issues and tests conducted on thrust Gleason bevel gears and associated bearings.
| Identifier | ExFiles\Box 49\1\ Scan315 | |
| Date | 24th May 1921 | |
| To R.{Sir Henry Royce} from Hs.{Lord Ernest Hives - Chair} c. to CJ. c. to BN.{W.O. Bentley / Mr Barrington} c. to E.{Mr Elliott - Chief Engineer} c. to Da.{Bernard Day - Chassis Design} c. to BY.{R.W. Bailey - Chief Engineer} c. to EWT. for R.R. Inc. X4150 Hsl/LG24.5.21. THRUST GLEASON BEVEL GEARS. X4150. We have got to anticipate that we shall have trouble with cars on the road which are fitted with Gleason Gears and single thrust bearings. We have carried out several tests on the Dynamometer by running 2 40/50 car on the reverse so as to get the maximum thrust on the plain thrust washer. We find that with the standard arrangement, that no matter how tightly we do up the nut holding the thrust washer, after a short run the thrust washer commences to turn round and when this happens it wears the very narrow distance piece. We have tried the arrangement suggested by Mr. Bailey in which oil was fed to a groove and there were radial slots on the face of the brass nut which takes the plain thrust. This ran well but after a time the thrust washer commenced to turn and get loose. As soon as this occurred, wear took place on the narrow distance piece. We also find that the nut holding the thrust washer on the shaft has been working and that the tab of the locking washer is bent which suggests that the nut should be left-handed thread. At R's suggestion we have also tested a scheme which allows the larger journal bearing to take the thrust on the reverse. The standard single thrust is still retained to take the forward thrust. We find that the standard Hoffmann | ||