Guy introduces New Trolleyhuses
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ADE to the customer's require ments," might almost be the slogan adopted by Guy Motors, Ltd., Fallings Park, Wolverhampton, in introducing its newly designed series of trolleybus chassis. The four-wheeled chassis is available with long or short wheelbase for single or double-deck bodies and, together with a six-wheeled model, all the chassis are offered in either 7 ft. 6 in. or 8 ft. overall width.
Common to all chassis, the frames are well braced by both tubular and
channel-section cross-members. A choice of two ratios is offered for he differentials, which are underslung and offset to the near side of the rear axles. Chassis lubrication can he by nipples grouped and enclosed in weatherproof boxes, or R.P. automatic chassis lubrication can be fitted at a slightly additional cost.
A specification of the electrical side of the trolleybus shows that troublefree running and ease of maintenance have been placed foremost by the designer. A few of the many goo:I features include a minimum of moving parts, a compound-wound motor using both shunt and series windings for motoring, and accessible and easily lenewable contact tips.
The D.C. traction motOr of 500 to 600 volts gives an output ranging from 70 to 140 h.p. Provision is made for fitting a dynamo and batteries should low-voltage lighting or emergency movement of the vehicle by batteries be desired.
Accelerator and braking controllers of either drum or " scissors" pattern are fitted, according to the customer's requirements.
The trolley collector boom, of lightweight steel tube, is fitted with a spring buffer to limit the height of the trolleyhead on dewirement. An alternative to the spring buffer is the Newton hydraulic shock absorber.
A full description of the new series of chassis will be given in next week's issue of " The Commercial Motor."