Build a Cordless Drill Powered Go-Kart

gokart

Educator and Make:¬†author Gever Tulley helps kids build their own drill-powered¬†go-karts at his Tinkering School in Montara, Calif., using small welded frames, bike parts, and cheap corded drills. We asked him to build a version for Make:, but we wanted it to be large and powerful enough to carry an... Read more »

Bicycle-Powered Treehouse Elevator

bicycle-powered treehouse elevator7

Ethan Schlussler of Sandpoint, Idaho, built this clever bicycle-powered treehouse elevator to make it easier to reach his nearly 30-foot-high treehouse. "It was originally a 20-something speed bicycle, but first gear wasn't slow enough, so I cut the large sprocket off the front, and welded it on the rear to... Read more »