Quote Originally Posted by J.A.G View Post
How big are featherweight bots
Look in the rules, 13.6kg is the only limit.

Thus if you make it out of 50mm thick lead - it's going to be pretty small. Make it mostly out of air - and it can be bigger than most heavyweights (Look at failboat).

You need to plan and design to the rules, using knowledge gained from build diaries and so on. You can't just ask people to give every random specification for a robot - as it won't go together