Pump (skateboarding)
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Pumping is a skateboarding technique used to gain speed without the riders' feet leaving the board. This is done by selectively applying pressure to different parts of the board. Pumping can be done on flatland by turning or on a transition like a ramp or quarter pipe.
[edit] Transition
Transition pumping can only be done when there is a slope differential between the front and rear wheels. That is to say, it can only be done at the top and bottom of any ramp, but can be done through the entire pipe. The rider should actually push downward on the truck with the greatest slope under the wheels. On the top of a ramp the front wheels should be pushed, and at the bottom the rear trucks should be pushed. On a pipe the weight should be applied to the rear truck throughout the entire transition.
