Ahh, I see! If I were to make a disc at say, over half the robot's weight but load the base up with magnets, would that be sufficient enough to stabilise it or is it best just sticking to around that sort of weight region anyway? NST's only got 3kg on that blade too? That's dead impressive!

That's true... kind of came out of nowhere, around series 5 people got wise and started piling on the armour...