a mechanically joined steering assembly for supporting the wheel of a wheeled vehicle for steering movement relative to the frame of the vehicle . the steering assembly includes a crown attached by mechanical fasteners to blades and to a central steering portion joining the assembly to the frame of the vehicle . the parts joined are the blades , steerer , crown , and reinforcements . mechanical fasteners serviceable with common tools provide a reinforced steering assembly of greater strength than welded or brazed constructions . this assembly allows the use of metallic , advanced composite , or thermoplastic components . adjustments of axle location and steering geometry are made by sliding blades up or down in crown . blades , steerer , and crown retain the original cold drawn strength of the metal used by mechanically joining without brazing or welding .