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).
Proposed assembly procedure for an Epicyclic 3rd speed gearbox.
| Identifier | ExFiles\Box 15\5\ Scan179 | |
| Date | 12th November 1930 | |
| X/310 BY.{R.W. Bailey - Chief Engineer} FROM DA.{Bernard Day - Chassis Design} DA{Bernard Day - Chassis Design}3/M12.11.30. Copy to HS.{Lord Ernest Hives - Chair} EPICYCLIC 3rd. SPEED GEARBOX REVISED - ASSEMBLY. X.7310. X.5310. X.523. We should like to give you an idea of how we propose to assemble this box so that Derby may bear it in mind in detailing and if necessary send us any troubles they anticipate as soon as possible. We intend that the great wheel shall be inserted in the rear part of the box before the shafts, and before the end cover is put on. The 4th. and 3rd. motion shafts are then assembled in the rear end of the box, and the 2nd. speed wheels and the constantmesh driven wheel are assembled on their respective shafts inside the box. We also intend that the ball bearing at the forward and of the 3rd. motion shaft should be in the place with its retaining nut locked up. Also the roller bearing at the forward end of the 4th. motion shaft is fitted up. The retaining ring for the ball bearing on the 3rd. motion shaft has its ring of bolts in place. The epicyclic gear 1st. motion shaft etc are inserted into the forward part of the box through the front cover, and the bolts which secure the ball bearing carrying the constant mesh wheel are nutted up and locked. We think it will also be necessary to insert the oil pump into the forward half of the casing though it will not be bolted up. The two halves of the box are now brought together and bolted up, the long bolts being held through the various covers in the forward part of the box. Then the oil pump is bolted up against the ball bearing at the forward end of the 3rd. motion shaft, and finally the rocker shaft for the vacuum control inserted. The sliders of course in position in the rear part of the box retained by the gun metal casting. As the two halves of the box are joined up the sliders must be guided into position. DA.{Bernard Day - Chassis Design} | ||