How to build a pump track

New East Park feature expected to draw visitors to Quincy.

QUINCY — Building a pump track starts with studying the lay of the land. Shawn Lorenz of the Evergreen Mountain Bike Alliance, North Bend, designed the pump track currently under construction in Quincy’s East Park and said the design started with a picture of the park. “The design for the Quincy track was an overhead image set precisely to a 20-foot per inch scale. And then (the design process) is using an engineering ruler to measure off feature spacing and see what fits on the land,” Lorenz said. “The design kind of forms itself - I guess organically would be a good word to use.” ...