Clever If you want to add gears the top part of the center would be a good place to put a big one and then attach a mechanism to that.

Interesting rig. I can't help but feel the anchor would get in the way of a lot of shots?

Would love to see a photo or an animated gif of it in action.

As it happens, I also have been working on a 'curved motion rig' of my own, as my larger project in the making demands it. Although my design shares the anchor idea, I favour using a curved train track, on which I have a webcam on train wheels, opposed to the car wheels + tires that you used. The car tires tend to vary as you shift them, due to their ridges, whereas the curved train track produces a far smoother result.

But yours is still a very insightful and interesting build. It'd be nice to see it in action!

I'm still having some trouble with it thus far.  Carousel is right about the lumps.  I can still do something fast, but if i try anything slow and gradual it's not going to look nice.  I'll need some more work on it try try to make it better.

Railroad tracks sound really great, unfortunately, I don't actually have any which are curved.

I suddenly feel like my camera rigs are very puny and makeshift when looking at yours ANP.

Anyway, here's a couple of methods I've used for rotating shots:

Instead of moving the camera for this one, I move the set (made easier with onion skinning). It worked really well with a black expanse as the background, but had a few jutters.

2nd place Darkness and Light entry: The Tree
Behind the Scenes

Yes, those are great. And I just realized I have the same train track pieces, so I should put together a rig....

Honestly I find just putting the set onto a lazy susan and rotating that to be a fairly efficient way of doing it.

I have a lazy susan, but I can't get her off the couch.

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