Wankel Rotary Engine

thingiverse

This is my take on a 3D printable Wankel rotary engine with custom designed rounded gears for easy printing. I didn't like other Wankel engines here because they use standard involute gears that don't tend to be strong due to their sharp corners, so I created one with rounded gears that print much stronger and faster. I also made this design because I got bored and it's a great way to learn CAD software. If you'd like to see it animated, check out the link here. There are a few different turning mechanisms that I designed, all of which require printing the HOUSING+BASE and the ROTOR, as well as the ECCENTRIC DRIVE. For turning mechanisms, you can make AXLE and HANDLE, or AXLE and FINGER TURN, or the TURN KNOB. The TURN KNOB or AXLE should be printed with a much higher infill percentage than the rest of the parts. All parts have been printed at least twice by me and tweaked for better printing. I fixed the parts together using 5-minute epoxy, being careful where it ended up. If you make one, please post some pictures of how it turned out. Feel free to let me know if you run into any issues while printing.