Build a super-cool propeller powered trike. If speed is required, convert it to a conventional pulley drive system. This kit uses pre-cut wood and interlocking pieces to make a basic model onto which electrical and mechanical components are added. Each kit builds into a fascinating machine that is fun to assemble and great to play with. The project is completed by decorating with colorful stickers or can be customized by coloring blank pre-cut decals also supplied in the kit.