Dually in a Chevrolet Dually vehicle refers to the dual rear wheels on the one axle of the truck. They can also have a fifth wheel which is used for towing heavy trailers.
Ford F350 Super Duty Dually
Julie is a close rhyme, but not an exact rhyme, for "dually".
11,200lbs http://www.swcp.com/pcaskey/ford-towing.html
You can tell if your pickup is a 'dually' by looking at it. If it has two tires on EACH side at the rear, then it is a 'dually'.
The GVW should be inside the door, ours is 11,500
only if the f250 is a dually to but otherwise no because the front and rear wheels are offset on the dually
nono
a dually forklift is a forklift that has 2 drive tires on each side
no
Yes 4 wheel drive is better than a dually, unless the dually is 4 wheel drive.
He is referred to as a dually in the companion books to the movies, but in the actual movies he has only four wheels.