Pinewood Derby CO2 Car

This is a remix of a <span style="font-size:13px;">Pinewood Derby </span>CO2 car found on Thingiverse https://www.thingiverse.com/thing:5929 <span style="font-size:14px;">by </span><a href="https://www.thingiverse.com/sliptonic">sliptonic</a><span style="font-size:14px;">, published </span>Mar 14, 2011. I took the firing mechanism and modeled a car and made some modifications. Modifications incliuded a safety to prevent misfiring, a heavier hammer, a wire guide channel, repositioning of parts to increase thrust, and some changes in the hardware used.