Rear axle Design on London's N.S.-type Bus.
Page 25
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'ONE OF THE most striking deparle/tures from current practice in the of the latest type of L.G10. bus is the use of the internal rack and pinion for the final drive. All those Londoners who are sufficiently conversant with the mechanical details of the buses in which they ride will recollect that the earliertypes a buses running on the London streets, such as thaold Milnes-Daimlers, embodied this form of gearing, -which had eventually to be discarded because, with the knowledge and experience then in our possession, it was impossible to quieten the gears or, having quietened them, to keep them quiet. Those who are aware of the fact that the London General Omnibus Co., Ltd., have reverted to this construction in their newest buses will no doubt be interested to learn how the almost complete quiet running of the present gears has been achieved. The necessary information is now made known upon the publication of patent specification No. 208,796, in the joint names of C. K. Edwards and the Associated Equipment Co., Ltd.
The means a,re simple enough. The driving pinion is carried, as usual, at the end of the differential shaft and
overhangs its bearing. The latter is
carried in a housing which is eccentrically mounted in the end 'of the rear axle. The housing is equipped with a stud which projects through a circumferential slot in the axle, and by this stud it can he rotated, carrying the pinion into more or lass effective engage-. meat with the rack. The eccentricity is not great, and a very fine degree of adjustment is, possible, as is necessary if the best conditions for silence are to be attained. Having 'once fixed the pinion in that position which is most desirable, the eccentric housing can be locked by means of a plate on the stud, which plate can be set to engage one or other of a number of convenient notches in the axle easing.
Our readers may remember that this axle was completely described in our issue for December 11th last, when we gave first and exclusive, details of the N.S.-type bus chassis..