I film R/C cars a fair bit and the low down hand held stuff and seeing Alex's latest 3-axis video - well, that's exactly what I want to build. Ideally a pan axis that just smooths out jerky motion. I use GH3 and GH2 mostly for filming, with some light and some fairly heavy lenses. Where the heck would I start on this?
I'm sure I can design a frame of some sort but I've no idea about motors and what size would be needed or indeed the 3-axis control.

I don't have crazy money to buy a pro solution, I do it for fun so I need to make it myself :)

Sorry if these questions are too simple, I am new to all this.