very interesting, a whole swarm you say ?
if you are planning in numbers, maybe it would be cheaper to
use VS*R tanks, but i have no idea what type of gears they have.
the little " lens " thingie can also be found on the realy realy cheap clones,
but usually the gear's are of a very cheap quality and of little use.
I was wondering, you are also looking for motor/gear assemblies and treads.
i take it you want to mount your own electronics ontop of it ?
as the digiQ treads are very small, won't it topple over ?
here is somebody who made use of digiQ gears for a microbot,
maybe it is of use to you.
http://www.wildrobots.com/nano/gallery.htm
parts you could use ?
http://www.bittybot.com/index.php?pageId=Products
if i recall correctly, there was a yahoo group about building bittybot's,
maybe there's some more info there.
hmmmm, wouldn't it be nice to have a autonomous combatdigiQ
searching it's way trough the battlefield....
( hey, i can daydream if i want to )