Transatorque
Page 28
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continued from page 19 hydraulic motor and drive assembly weighs about one cwt. It is intended that production units should incorporate a cast aluminium gear casing to reduce the weight significant,ly.
Traction tests on the Bass Charrington outfit in the unladen condition have been carried out by Edbro engineers, using a wetted steel plate to simulate a low-adhesion surface. A 5-ton Salter spring scale, forming a link between the rear of the trailer and a dead weight being towed, registered tractive effort.
The most significant result was that with the trailer axle only driven on dry ground, a tractive effort of one ton was recorded. This was only increased by a further nine cwt. When the tractor's driven axle was simultaneously engaged, with one tractor drive wheel on the wetted steel plate. The tractive effort also only decreased by one