Making Wheels

I spent some time in Inventor working on designing a mecanum wheel, which is quite tricky.

We’re on the Ball!

With the world cup just around the corner the solution was staring me in the face. If I couldn’t make the sphere from triangles then pentagons and hexagons would do. That’s not to say I didn’t try to break it down further but it seemed like more...

Materials and manufacturing considerations.

So how does one make a huge half sphere cheaply? Plexiglass? Sounds like a tricky proposition. Is it even strong enough? Fibreglass? Carbon fibre? maybe for a prototype but them mass producing them? The more I thought about it, the more I realised it couldn’t be...

Making spheres.

So if a half sphere was my ideal solution where would I get such a sphere and how big would it be? Well, the human center of gravity is around their navel So if I could keep this around the center of the sphere I would be winning in terms of power needed to move it....

Putting two and two together makes 3DOF!

The bubble chair was a start but not quite the solution I needed. There was also an issue of engineering to be considered, how do you rotate a sphere 3 ways without the one set of wheels stopping the other. Happily this is a problem also worked out long ago : Omni...