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Originally Posted by Qbranch
We use our old robots often for the purpose of demoing for our existing and potential sponsors.
Having three robots running at once is a great way to drum up interest 
(Picking up balls, shooting balls, moving tetras  )
-Q |
Sounds like your team puts on an impressive show. I'm trying to get our fleet to a point where we can do that, our '06 robot can, '05 sorta can but the arm won't work (limit switches were unplugged and pins aren't labeled), '04 could, but it might be a bit dangerous (chassis is loose, needs to be partially reassembled), '03 can (our only fully functional robot), '02 isn't going anywhere (a drill transmission was blown last year), '01 doesn't exist anymore. So that makes one ball shooter, one box pusher, one tetra grabber (assuming the arm gets fixed), and one big boxy thing with an arm. (I think the arm either lost a manipulator somewhere or was only designed for hanging) Hopefully '01 will come back to life in the form of a T-shirt cannon robot.
On topic. Robot disassembly is good and bad. I'd say practice CAD by designing something since that's how you'll be doing it during competition. If you must disassemble something, remove one mechanism, CAD it, reassemble. That way you get more mechanical experience too. Worst case scenario, leave a husk, that way at least drivetrain/chassis people can get ideas.