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Smith's trailing arm

16th March 1985, Page 22
16th March 1985
Page 22
Page 22, 16th March 1985 — Smith's trailing arm
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RAY SMITH has revised its bolt-on, trailing arm air suspension to increase suspension travel and reduce maintenance.

The new air springs give almost 51mm (2in) more stroke than the old and result in a suspension travel at the axle of 229mm (9in). This gives more scope for picking up demountable bodies of various heights.

The suspension's patented torque-leaf arrangement, which relieves the axle and chassis of twist during roll or one side deflection, has been simplified and now has a plain end sandwiched between two rubber pads.

Thus the two lubrication points, at the spring eyes, of the original design have been eliminated.

Routine maintenance checks are now confined to bolt tightness, condition of rubber mountings and levelling valve function.

Another modification is the chamfering of the tips of the outrigged air spring brackets to accommodate demountable bodies with rear legs close to the wheels.

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