Scammell Produce Fourtrak
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A TWIN-OSCILLATING axle semiI-1 trailer with a capacity of 15 tons is now made by Scammell Lorries, Ltd., Watford. The name given to the new model, which is available in lengths up to 26 ft., is Fourtrak. (This was forecast in the September 1, 1961, issue of The Commercial Motor in the feature " Transverse or Tandem?-)
Suspension of each of the twin axles is thitugh single-rate leaf springs mounted on rubber bushes and 10.00-20, 8-ply tyres arc standard. The 7-ft. 6-in.wide frame is of all-welded construction using *-in.-thick pressed-steel, channelsection side members 15 in. deep with 31-in.-wide flanges at the main section. Pressed-steel, channel-section outriggers support the 5-in. by 11-in, side raves. The front sill is the same section and the rear cross member measures 5 in. by 21 in. The cross-boarded floor is of 11-in.-thick softwood.
Single-line vacuum-operated 151-in, by 41-in, brakes are employed with a parking brake provided for hand operation. A two-line air-pressure braking system can be supplied at extra cost.
A standard SAE-SMMT fifth-wheel coupling with a 2-in.-diameter kingpin is fitted, but Scammell automatic coupling gear 'can be incorporated if required. Vertical screw-type landing gear of lightweight design supports the front end of the semi-trailer when uncoupled.
A prototype of the new Scammell Fourtrak was included among the exhibits at a special commercial vehicle show held this week by Carmichael and Sons (Worcester). Ltd.