Huh? make sure the robot weighs no more than 13.6kg. The removeable link must be easily accessible without the use of tools and also accessible even if the robot is upsidedown. also write LINK in a colour that will stand out where the link is located so it can be easily found. Make sure the LED is Visible. You will need a cradle for the robot to sit on at events, this can be a few bits of wood nailed together so the robot will sit on it without the wheels touching the bench or floor. You will need some rubber or foam or something covering any sharp edges while the robot is in the pits. Dont put your reciever too close to your motors as it can cause interference and try to twist wires together whenever possible this will help reduce interference. Read FRA Safety and rules pages before building. Ask as many questions as you want to. you will always get help here.