Rubber Band Racer

thingiverse

Rubber Band Racer. After making and breaking a couple of these, I wanted to make one which wouldn't break. And this led to being able to wind as much torque as possible into the car, the first thing to break will be the elastic. You can feel when the elastic band is reaching it's elastic limits. The four 1/4" dowels are: 230mm long, and the 1/4" axle dowel is 80mm. When assembling: test the dowel and hole fit and drill the pin holes after you've fit the axle, hook, and rear wheels together, that way the part acts as the drill jig. The rest is friction fit. Try to set the tail hook as centered and perpendicular to the axle as possible, this will help it run straight. The download STL's are slightly different from the CAD recording, the front end is 2 parts now. It goes pretty good, that's about 28' in the video, I think it could go 40 or 50'.