check pic on profile, its the current finnish 6kg champion..

Name: Pro-laatikko
Weapon: 300mm dia, 8mm thick hardox 650 bar @ ~5000rpm
Weapon power: 1½hp peak drill motor
Drive power: 2-speed drills at high gear (20km/h)
Battery: 2x12v/2000mAh 4/5SC NI-MH
Armor: 1.5-3.5mm airplane aluminium and 1.5-8mm 6063 T-6 aluminium.
Status: under repair

Edited to add:
http://www.robosota.fi/foorumi/viewtopic.php?t=567


(Message edited by jh-q on December 06, 2005)