Skateboard trucks
Skateboard trucks are the two metal components attached
to the underside of a skateboard deck which are used to connect and
hold the wheels. The top part of the deck, known as the baseplate, is
screwed into the deck. Beneath the baseplate lies the hanger which has
an axel running through it.
At the point where the baseplate and the hanger meet lies the bushings,
which provide a cushion mechanism meant to control the turning radius
of the skateboard. The stiffer the bushings, the more resistant the
skateboard will be to turning. A bolt, called the kingpin, holds together
the skateboard trucks. By tightening or loosening the kingpin, a skateboarder
can control the turning radius of their board.
Recently, manufacturers have developed longboard specific trucks that
give the board and its rider a lesser degree of control over turning
radius. This provides for greater stability while riding, especially
at fast speeds. Competitive skateboarders generally invest in skateboard
trucks such as these, as they can reach or exceed speeds of up to 60
mph.