HOYNOR Stand 146

20th September 1968, Page 163

20th September 1968

Page 163

Page 163, 20th September 1968 — HOYNOR Stand 146

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Hoynor Trailers, Main Road, Danbury, Essex

TWO semi-trailers are shown on this stand, one being a 48 cu.yd. tipper which employs the Villiers system of tipping about the rearmost axle of the tandem running gear. The vehicle is plated for 32-ton g.v.w. and the body and main frame structures are integral. The body is panelled with lOg light-alloy sheeting while the floor is of 0.25in. thick light-alloy.

The tipping gear on this type of machine is mounted on a sub-frame carried on the fifth-wheel coupling along with the Villiers stabilizer. The design dispenses with the need for a subframe to absorb the stresses imposed on the bodywork when tipping and consequently offers greater payloads to unladen-weight ratios.

A steered three-axle trailer is the other exhibit. It is 40ft long and has its three axles steered through a linkage from the fifth wheel. This mechanism is designed to account for the complete extent of movement of the tractive unit through an arc of 180cleg and at the same time increases the amount of steering angle applied to the wheels as the turning radius is shortened. Forged 1-beam axles of the pattern used for truck steering axles are used for the rear bogie which is carried by standard Rubery Owen slipper-spring suspension.

The vehicle shown is representative of the range in which models up to 100ft long and g.v.w's of up to 60 tons are offered. Where necessary the trailer can have four steering axles.