Replaced the rubber band with a DC motor and 3D printed propeller on my LEGO Technic car

Mount designed in TinkerCAD from caliper measurements — first print, perfect fit. The propeller was repurposed from another project — open to suggestions on how to make this more efficient. STL on Thingiverse if anyone wants to build one: https://www.thingiverse.com/thing:7364070 submitted by /u/KiwiOk5485 [link] [comments]