This is the design I am currently attempting to build. A verticle disk spinner simular to Nightmare, but with two disks instead of one, and hopefully will be able to operate upside down when it get's flipped. The main issue I am having though is the supports for the front, to hold the disk up from hitting the ground. I don't just want to stick a couple of extenders down then wack some wheels on the end. Since those don't look very good, but there doesn't really seem to be any other better looking options for it that I have discovered yet. I am also not quite sure if those fire axes are the best teeth for it or not.

Current Stats & Parts...
Current Weight: 471.9
Armor: 1mm Steel
NPC-T64 X2
Perm 80 EL X2
N-12 Wheels X2
PC 545 X2
Large 2 DSL Disk X2
Fire Axe X4
Ax 2550 Control Unit
Baseplate Anchor X2