PLA Spring Motor Demonstrator

cults3d

A motor demonstrator spring printed entirely in PLA, spring and all, requires no batteries, power supply, electric or drill motors to operate. And what is it good for? For starters, it can be a fascinating study for aspiring mechanical engineering students of torque versus velocity, as well as spring forces that can be obtained by printing a PLA spring using various infill settings, height and thicknesses. And next, well, read on... Video is here: https://www.youtube.com/watch?v=e4j5zX3Sbnw&list=UUv_zm49u-RjnCJVwhUO-ecA. A rolling chassis version is here: http://www.thingiverse.com/thing:430050. And a wheelie pulling dragster is here: http://www.thingiverse.com/thing:452248. Use safety glasses when operating the PLA Spring Motor Demonstrator. While I've operated the mechanism well over a hundred times without failure, I always recommend erring on the side of caution as the spring could snap and send pieces flying where they shouldn't be flying, and that's never a good thing. Designed using Sketchup 8, and printed in PLA on a Makerbot Replicator 2 using Makerware 2.3.3.42.