Typical!

Autodesk Inventor has a roller chain design accelerator that can produce quite complicated chains. So half an hour of playing around and I’ve managed to make my chains ‘properly’.

Only problem is that it doesn’t actually show the ‘chains’ just where they should be 🙁 I guess it would complain with several hundred extra parts…

It’s also perhaps possible to create a new chain type, with my rollers, as a standard component, but if I can’t even see them there is no point….

chainssIt’s not a complete loss, it will tell me how long each should be and allow me to change the size of each sprocket without too much messing around. The model also has a HUGE 1.4m invisible roller at the top ‘pushing’ the chain down.

Fixed facebook

I was running a plugin to automatically update facebook but I hadn’t configured it correctly, it now shows a tiny picture instead of a HUGE wordpress logo and I ‘reposted’ everything in order….

Not that anyone is reading it on facebook, but if you build it, they will come! 🙂

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.

Now unless the user was sitting down then the sphere would have to either be HUGE and completely encase them but this has already been done.

They’re not hamsters dressed as humans but people in a $50,000-$100,000 sphere! Clearly this might be tricky to pull off cheaply.

So if we use this poor example to keep the half sphere small, only about 1.2m across, we could sit in it with our legs sticking out a bit. How about tilting it back? But wouldn’t we know we weren’t sitting straight?

Possibly not, we can trick our brains into ignoring the inner ear to some degree.