PolarMoosE
On the 744 the steering tiller is mainly used for taxiing and the line up. The tiller is able to turn the nosewheel up to 70 degrees in either direction.
For the take off roll, we use the rudder pedals, which are able to turn the rudder up to 7 degrees in either direction.
Further more during sharp turns on the ground(nose wheel steering angle exeeds 20 degrees), the body gear steering is activated when ground speed decreases through 15 knots. When speed increases through 20 knots, the body gear steering is deactivated, and the body gear is centered as well.
RGRDS
MP