How a Lean Becomes a Turn
On a quad roller skate, the wheels sit in pairs on small pivoting assemblies called trucks. Each truck is held against the skate plate by a central bolt and cushioned by soft rubber or urethane pieces called bushings. Those bushings can compress and bend slightly under pressure.
When you lean, your weight presses harder on one side of the skate. The bushings on that side deform, letting the truck rotate around its pivot. That rotation angles the axles—and the wheels attached to them—so they begin rolling along a curved path instead of straight ahead. The wheels follow the turn; the flexible bushings help aim them.
Why the Cushions Matter
The bushings act like a small suspension and steering control in one. Softer bushings deform more easily, so a modest lean can produce a sharper response. Firmer bushings resist movement, making the skate feel steadier but requiring more force to turn. Skaters can change bushing firmness to suit their weight, skating style, and preference for quick response or stability.
The useful detail is that turning does not require a dramatic twist of the skate. A small shift in pressure is enough to flex the cushions and redirect the trucks—making a subtle lean the steering input.
