New - Gearboxes Gtve Up to 10 Ratios • A LL
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but two of the transmission units .r.-Ito be displayed, at the Commercial Motor Show by the David Brown automobile gearbox division will be exhibited , for the first Lime in new or modified form.
There are , two new versions of the model 557CM gearbox. The first is the 557A, which incorporates a two-speed epicyclie unit giving 10 forward ratios. The second is the model 557/480, which has been designed specifically for the new Gardner 6LX 150 b.h.p, oil engine. All gears are in constant mesh.
In both these gearbakes the maximum input has been raised from 350 lb.-ft. to 480 lb.-ft. by fitting gears of increased face width. A choice of direct or overdrive top gear is offered.
Another new Model is the 552 fivespeed gearbox, which can be supplied with bell housings and primary shafts to suit Gardner 4LW, Perkins R6 and Comrner TS3 engines, or with special primary shaft and adapter plate for the Bedford engine. It is designed for a maximum engine torque of 270 lb.-ft. and has constant-mesh forward gears.
The new S550 five-speed gearboxfor 300 lb.-ft. torque has Porsche-type synchromesh on all forward gears except first. Another version, designated SP450, is available for use in coaches. It has four fully synchronized gears and is designed for 350 lb.-ft. torque.
Another five speed gearbox, the 542CM, is a revised version of a well' established unit used particularly with the Perkins P6 engine. All gears are now in constant mesh.
INSURANCE UP IN EIRE
STRONG protests have been sent to Eire's Minister of Industry and Commerce following the insurance companies' decision to increase commercialvehicle rates in the country by 25 per cent. A joint meeting of transport associations demanded that the crushing increase" should be investigated by the Prices Advisory Body.
About 44,000 operators are affected, most of them owners of delivery vans under 2 tons unladen.