Eric Walls, left, and Brad Parks side wheelie “formation flying” down a steep hill near the Quadra factory.

Eric Walls, left, and Brad Parks side wheelie “formation flying” down a steep hill near the Quadra factory.

Viewing a sleek red Quadra wheelchair demo my first day in the physical therapy gym was a milestone in helping me accept my T10 paralysis. The year was 1985 and at age 25, self-image was extremely important, especially since the folding wheelchairs of the time sent the message: “Patient — don’t touch.” Instead, the red Quadra broadcasted “performance,” “athlete,” “sexy,” “cool!” The PT gym became a mandatory stop when friends would visit me in rehab. “Check it out. This is the kind of chair I’ll be sitting in,” I’d say, a way of letting my