Can’t find that special steel spring? Why not make your own?
Gearboxes and transmissions are used in everything from vehicles to machines, but do you know what goes on inside them?
Hook and loop fasteners is a brilliant invention by a swiss engineer (George de Mestral) who noticed how some plants has hooks on them that attached to fur and clothing. Using this idea, he made what we all know today as “Velcro”. But Velcro is just one brand of hook and loop fastener, there are many different types out there, even metallic ones! In this video from Design Squad Nation, the mechanics of hook and loop fasteners is explained in a very simple and easy to understand way. Just watch and enjoy!
There are many of different ways of making a differential system, and one of the more ingenious ways is the “Torsen” differential. Where the old basic version of a differential has big problems with wheels slipping on oil spills, ice and other slippery surfaces, the Torsen differential solves this conundrum in a beautiful mechanical way. Learn Engineering has made this excellent video that explains how it works, but this is a bit advanced. If you aren’t comfortable with how a basic differential works, you should first watch these videos, just to get your head around the mechanics:
A standard differential is great for maximizing the efficiency to which an engine can translate its energy into movement on most surface. But if the vehicle or robot encounter slippery surfaces like oil, mud or ice, it has a major drawback. As soon as one wheel encounter a more slippery surface then the other, it will start slipping and spinning out of control, while the other wheel is basically dead. The result is that the vehicle wont go anywhere. In order to solve this problem, the “Limited Slip Differential” was invented. Too complex to explain in mere words, Learn Engineering have made this excellent 3D animation to help you wrap your mind around it. Keep in mind, this is advance stuff, so you might want to check out how a standard differential works before you tackle this tutorial: