Really good comments Guys,

Now I want your interpretation on the rules as written in the book.

My views so far.

1/ A walker must employ moveable legs to support its weight.

Dose this mean the only thing to touch the ground are the legs or feet? I would think so.

2/ Each leg must have at least 2 degrees of freedom.

There are 6 mechanical degrees of freedom available, how can you prove this on a robot? my test would be adjustment, the machine should have the capacity to, for instance adjust stride length or Height of any leg independent of each other.

3/ Robots with rolling or sliding mechanisms will not be classified as walkers.
4/ Walking such as linear actuator operated legs.

I have grouped these together as at first they seem to contradict each other! A "linear actuator" IS "a sliding mechanism" the only way I can make sense of this is to assume the rolling or sliding is referring to the bit that touches the ground you can't have 12 boots stuck on a wheel and call it a walker, or have a foot that doesn't ever leave the ground. the "such as a linear actuator" seems to be an example of what they mean. Or dose it mean you have to use linear actuators?
I can't think this is so for 2 reasons, Firstly if this is true this is the only time in the rules they dictate design. Secondly this rule would make combat robots too expensive for anyone to run in a combat environment. you would have to have a lot of spare linear actuators to make this work.

remember we are trying to find a path through the rules that are there to encourage walkers in the community so lets keep this positive.
Thanks

Craig