Rocket Power

This week I've been working with the Institution of Mechanical Engineers and Bloodhound SSC with balloon powered cars at a Tomorrow's Engineer's event. It inspired me to add "rocket", or rather, Balloon Power to the ThinkFun kit.

It's simply the small connector with an added pipe - getting to know the sizes of ThinkFun parts I'm probably going to revise this to give ground clearance if medium wheel are attached directly. The shape of the original part doesn't lend itself to "edge" printing,