Wow, I didn't expect this much response. Well, good news, I just got back from Home de Pot about an hour ago and I have all the supplies I need for the frame, track and roller assembly. At first, I was going to make the whole assembly from metal, but decided that's a pain in the ass, especially for the masses who will hopefully replicate this design. And, using 2x4 for the whole thing will be much stronger (originally I was going to use metal tracks from cabinets, too weak). **Side note: when I get my welder, I will redo this in metal.
Here's the lowdown:
Track: (1) piece 3/4" Aluminum box tubing (great minds think alike bud_me)
Rollers: (4) Fixed Industrial Casters - 2 1/2" x 38mm (wide)
Frame: 2x4 Wood
Main Roller: caster or rollerblade wheel
Simple simple, huh.
Cost so far:
Frame - 2x4 Wood: Free
Main Roller: ? (cheap)
Electronics/Motors: ? (around $20)
I'm trying to keep this as close to $50 as I can, that way people can get this for cheap, but still have a strong reliable light mover. I'm getting my camera charger tomorrow, so pics are coming.
MumBumper: I'd love to see the diagram. I'm no electronics whiz, but I can get by. Any help is appreciated in that area. Thanks everyone for stopping by.