For the first time in history asking for rule clarification on CD will get you an official response.
So "must stay within 18 inches of the frame perimeter" meaning you can have 2 extensions in opposite directions at the same time and still be legal?
Also, how (and by whom) will the designs be judged? On clever innovative ways of accomplishing the challenge, the robot that the judges think is most likely to win with a competent driver, or the skill/detail of the CAD work?
Is there a specific purpose to the overpass that I am missing? Can you stack on top of it?
There is no benefit to creating a stack in a tank, right, it just has to be in there?
And why is there no score for stacks in auton?
How much of the CAD has to be your own work, I assume there will be no penalty for downloading the CAD of a CIM but what about a custom gearbox or an entire drivetrain (credit given of course) so that you can focus on designing a mechanism. (not that I would do that, but it should be stated for the rules) (Also, you may want to put a link to this thread in the rules as the official Q&A)
Thanks for making this guys, I will be sure to show it to the MOE Design team and may just participate myself.
Edit: Thought of one more, If you are able to create a stack where only one block is touching the ground but there is more than one block per "layer" would that be legal for all the blocks? (Sorry if i'm lawyering)