I said in my last blog entry that I wanted to play with the sensors first, and I did a bit, but I decided to go ahead and assemble the chassis and drivetrain first. I got the Tamiya track and wheel set, the dual gear box and the universal plate set. All this stuff is meant to work together, but the directions are in Japanese and it took a bit of kajiggering to get working right. In particular, it gives you no real hints about how many of the track sections to use, you just have to estimate and if you get it wrong, take it apart and try again.