On Sat, 08 Oct 2011 12:32:47 +0100, The Natural Philosopher wrote:

Sure if you have 100 turns lock to lock you can drive a 3 tonner without
power steering, but how safe is that when you need to get round a corner
in a hurry..you need to spin the wheel with one hand to get the lock on
and off.

Which is presumably why some buses and trucks had a knob on the
steering wheel so you could crank the steering round at a sensible
speed compared to pulling/pushing the rim.

--
Cheers
Dave.