(to Geoff), the center of the 2wd format is directly beneath the axle, while in 4wd, the turning centre is 12cm away from the axle. This means it is about 4/5 of a disc radius away.

The width of the bot is quite wider than Pimp2 or Vortex (about 420mm), while it is only 400mm long. While the centre of gravity may be slightly higher than these two bots, I might just about get away with it.

Ill take some more pics this evenin

P.S if Im flipped Im done for