At 21:30 12 July 2009, David Chapman wrote:

But other nonsense posted here . please help me, ...

A standard car auto gearbox has some magic power to automatically adjust
the torque to the car wheels on reaching a hill, without changing gear,
road speed or engine setting? What magic is that?

David.

Bill Daniels has some very strange ideas as to how an automatic gearbox
works! As far as I am concerned, it is a device to allow a motor vehicle
to move off from rest, to smoothly change gears, and to stop without
stalling the engine, without a driver operated mechanical clutch. It is
not cruise control!

In that changing gear with a mechanical gearbox and clutch would give
dangerous short term losses of power, an automatic gearbox is an essential
component for any winch or towcar.

Derek Copeland