Scale Tank rebuild, what motors to use?

A little update, I have settled on a pair of 650w wheelchair motors ( after a chat with the robot bashers) and will run it on 24v.
Its all stripped down and i'm building a new steel tub as I have just bought a MIG welder ( o'dear) They do say practice makes perfect, so it may be some time before I update this again.:002:
I have found a suitable method of getting the bang/smoke from the main gun......http://www.hfmgroup.com/professional...s/maroons.html
Stage pyrotechnics :036: can be electrically fired, and my Government thinks them safe enough to let me have them with no paperwork attached......cool