Spherical adapter - centripetal knuckle bearing

Roller coaster good finish and exciting, a roller coaster can sit for dozens of people, a long row, high speed at high altitude orbit. People in the car screams as the roller coaster turn left, right, upward climb, climb down, a wave from the sky and the air. Long a roller coaster, a row of trunk line trunk to cohesion. What talents according to the roller coaster track on the left turn, right turn, turn, reflexed? Why is the trunk between the trunk and one artifact. This artifact is spherical adapter. Spherical adapter by centripetal knuckle bearing, the bearing of the body, lateral axis, the axis of the body cohesion of bale. Spherical adapter to make the trunk with relatively free movement between trunk, can peace firmly linked together, can make their swing at home again. So much trunk, long roller coaster can rapidly through in the winding, ups and downs of the orbit.