Step 3: Add Ping-pong Ball Caster 1. Duct tape the ping-pong ball to the other end of the paint stick. If you set your car down now it should balance. The ping-pong ball will skip along on just about any surface since it's so light-weight and smooth.
Posted January 25th, 2011
There’s a kinder way to take advantage of the energy stored in a mousetrap’s torsion spring: make a mousetrap-powered car! NYU-Poly PhD candidate Dustyn Roberts created this project, featured in her book, Making Things Move: DIY Mechanisms for Inventors, Hobbyists, and Artists (McGraw-Hill, 2010).
Adpated from instructables.com where you can find additional images, expanded instructions, and more of Dustyn Roberts’ projects.
