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wit 1Wit In Graham Montgomerie's article -Impressive . . . despite the weather," (CM, February 3), he mentioned severe cab nod when testing the Seddon Atkinson 400 with Cummins E290.
I observed from the photos that the test load was not distributed over the full length of the trailer, and I suggest that, with the 20 tons or so concentrated in the centre 80 per cent of the trailer bed, this could have created whip in the trailer main frame, thus causing the cab nod.
I have had experience of this myself when transporting sheet and coiled steel. lf one loads coils in a well, or bundles, leaving 6ft or more at the front, and 4ft or so at the rear of the trailer unoccupied, cab nod can be severe, but if one loads the same trailer with bundles from the head board to the extreme rear of the bed, cab nod is reduced to almost nothing.
Perhaps you might comment?
C. W. BURROWS, CM LDoY 1975, Ascot, Berks.
In fact the load reaches to within 9in of each end of the trader (whether it looks like that or not!) — Ed.