FYI

The nose wheel in the 727 could turn around 78 degrees left or right. There are some things that effect the turn. If you are going too fast, the nose wheel will tend to slide and loose traction. In the real plane if you turned too hard you could roll the tire off the wheel - not good! The CG of the plane would also effect the down pressure on the nose wheel.

Try taxing slower and tap the brake in the direction you want to turn to get a better radius of turn.

Lou