So with the module size being determined it was off to the hardware store to start buying some materials and test the idea. I have picked up 8 of the 1200 x 600mm plywood boards in 7mm thickness.
At the time of buying the boards I still was not 100% convinced in my head the size was right, so when I got the boards home I decided to do a little test. I layed out 5 boards, the minimum I think you need to make a track, and tested my Losi Micro Desert Truck on the layout. Given the track system is also modular I tried a couple of other 5 board layouts. Here is a brief video showing the results with three different layouts:
I think it shows that a 1200 x 600 module will be OK for the Micro Desert Truck. It would be interesting to see how the bigger 1:24 Losis (Micro SCT, Micro Rally or Micro Truggy) or a Kyosho MiniZ Buggy would handle it.