I feel like building a kilobot now...
OK, for the drive http://www.technobotsonline.com/re-280- ... -15-1.html x2
wheels http://www.technobotsonline.com/banebot ... re-40.html with http://www.technobotsonline.com/banebot ... -bore.html x2
ESC http://www.technobotsonline.com/saberto ... or-rc.html
battery 11.1v 1000 mAh Li-Po

weapon flipper (hopefully won't kill myself)

ram http://cgi.ebay.co.uk/10mm-Bore-50mm-St ... 4aaba05c22
valve http://www.giantcod.co.uk/3-way-valve-p-405035.html with servo powering it
tank 2x deodrant tanks in parralellelelellelellelelelell (anoying word)
base and back 6mm HDPE
armour 2mm steel.
flipper arm 4mm ali checker plate

What do you think?