Make it climb

thingiverse

Make it climb! Check out this video https://youtu.be/3sg1ElKSOP0 Greg Gzumwalt (gzumwalt) is a master of bringing 3D printed parts to life, with over 100 designs on Thingiverse. Inspired by his creations, this project is a humble contribution - a version of the power source from that old children's toy, the Lehmann climbing monkey, first seen in 1903. The engine is designed to be inserted into toys like a bear or helicopter. In this thing, we build an Angry Bird, or something that looks like one. To assemble it, snap-lock the two wheels together. Make sure the holes for fixing the strings are on the outside of the housing. Shift them into place and push the square shaft from one side to the other. Before doing that, cut a small piece off both ends of the shaft to remove print imperfections and smooth out sharp edges with sandpaper. Next, move the end caps with "wing" over the square shaft ends. They should fit into the openings of the housing since they act as bearings. As you can see, I'm not exactly a great wing designer (although I am an aerospace engineer), so feel free to replace them with your own design. The string that comes from the larger diameter goes through the bottom hole, while the string wound on the smaller diameter goes through the top hole. Wind the string once around the small wheel and leave it long. Make as many windings as possible on the larger diameter, leaving just enough length to fasten it to the pull ring. Both strings should exit the wheels at the same side when they reach the escape holes. The exact length of the strings is determined by experiment - simply pull the lower string and adjust the number of windings on the small diameter until you're happy with it. Although supports aren't necessary for the engine housing, you might want to add some support for the shaft bearing to make it look nicer. However, since it's inside the housing, it's not crucial. The wheel combination should rotate smoothly without any friction. The Angry Bird is formed by two simple spheres. By printing the x- and y-axis at 100% but the z-axis at 200%, it fits nicely around the engine. This part is printed twice with supports. Eyes and beak are improvised, so feel free to do better! Check out more climbing "Things" here: http://www.thingiverse.com/thing:1918477 http://www.thingiverse.com/thing:1930503 http://www.thingiverse.com/thing:1943901