Shawn & Lara need a Toolbox... Droid?

[kresty]

Well, that's hard.  My 10mm driveshaft is like 10.05mm.  And my 10mm bearings are like 9.95mm.  So getting them together has been challenging.  But now I have 6 ends that fit.  Next step is seeing if I can thread the ends.  (If not, I'll need some other way to keep the wheels from falling off.)

Eventually I want 4 rods, but the stock was only 36".  The idea is to have the main front/rear wheels and then 2 idler wheels in the middle.  I'm hoping we can actually get much of the weight onto the idler wheels to make the droid turn easier.  (So the end wheels would actually be a little, hopefully invisibly, in the air)

This kind of idea:

Not sure how well I'll be able to get it to work, but I think that about the only chance this thing has of actually being able to turn is by getting the load/friction on the tracks out to the edges and not quite as long.  If you look at a tank or a caterpillar, their track profiles are more like two sides of a square than these two huge rectangles.