Right, well I've now got all the money I need for this robot and then some, so I need to work out what I need to purchase since the whole graupner setup went to bust so I can put in orders.

I have four 18v drills which need to be powered by 18v batteries, but I can't find any at the moment nimh wise.
I've bought a dx5e controller which came with an ar600 reciever. I need an led + resister, power switch and wiring.
I'm going to sell my 8 125mm wheels as I don't feel that I am capable of placing nuts in them properly, and buy some 100mm blue wheels.
But I don't understand speed controllers, I mean I know how they work, I just don't understand what the max ampage etc. is talking about. Is that the maximum drain from the motor on the battery? Or is that the maximum ampage it'll let the motor drain?
Does anyone have a table on 18v drill motors, torque, drain etc?

I'm going to use a steel baseplate, and as an experiment use tufnol instead of hdpe since my grandfather can source it quite cheap, I think it's worth a try.

Urgh, it's all so confusing. There is so much to learn.
Thanks for all your help thus far guys