Are you asking how does the seat stroke? The seats stroke straight down. There is a wire in each of the vertical seat tubes that is shaped like a clover leaf at the top. Two rollers per side are inside the side loops of the clover leaf with bolts through the them and the tube. The upper attachment hook is connected to the top loop. When the seat strokes, the rollers pull through the remaining 2 feet or so of coat hanger thick wire. The troop and gunner seats can absorb the energy of a 10G impact. Do not store anything beneath the seats in a 'hawk or it will be implanted up your backside in a crash!
Hope this helps.