This is so cool, I have a couple of questions though: Why 1/2.4 scale and not 1/2.5? And how did you make all those very specialised parts such as the track links, sprockets, wheels, exhaust covers, etc?
Track links, sprockets, wheels, etc. are made from castings. I heard that the maximum diameter is 1/2.4 size because the wheels are machined with a lathe that is close at hand.