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Drawbar drawbacks?
Page 28
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YOUR COMPREHENSIVE article (CM May 231 on the Fruehauf GLZ drawbar outfit was most interesting, and shows a big step forward for original thinking, upon which the designers deserve great credit.
You make the point that the third axle has to be locked for
reversing, but with up to 71/2 tonnes and a spread of about 10ft between second and third axles, I should think that this provides some entertainment for chassis and tyre specialists on anything but a straight path.
I notice that the film said "reversing is no problem" and proceeded to show just such a straight run. Obviously, this would be useless in a factory yard, so what is the alternative? Extend the drawbar and lock the axle to give ordinary two-pivot geometry with its attendant awkwardness? This is timeconsuming and could cause traffic problems if carried out on a busy road.
The ideal solution would be to provide a third axle which can operate in both directions. Is there such a device, or if not, why not?
M. SPENCER Oxford.