Counterweights on Axes

[dcr raptor]

Hello,
Does anyone know whether adding a counterweight onto an axe is a good idea and what effect it will have on a robot when the axe is used?
Also, would it be better to have a longer axe with no counterweight, or a shorter axe with a counter weight
Thanks in advance for useful info.

[Shakey]

I asked John Reid (Builder of Terrorhurtz) this a while ago. He said he tried but found it mostly pointless.

It doesn't really have much effect as most the movement of the bot itself when swinging an axes comes simply from swinging it, not the fact the axe is unbalanced.