Think about it. 13kg in 1 metre x 10cm wide = almost 3cm thick Titanium. How on earth youre going to rupture a fully shock-suspended 3cm thick titanium bar spinner by running into it with a disc is beyond me. All youll do is ruin your OWN one, as any and all shock taken by the bar wont do much to it. YOUR weapon, however, is of a considerably thinner substance due to it being a disc rather than a bar, so its much more likely to shatter or be disabled on impact.

Add that to my 1 second spinup time, and if you try that, youre screwed.