From SVBC:

The Bicycle Exchange is back and better than ever in 2011. Come join our group of talented regulars to learn more about bike repair while making a difference in the lives of underprivileged children.

Volunteers are the life essence of the bicycle exchange. We’d like to share the joys of bike repair with more local folks. Come on out, and bring a friend. You’ll learn valuable skills and help families and children who can’t otherwise afford a bicycle.