how much does a lem130 and 36v x 2 packs of nicads weigh?

9kg
leaves 6kg for chassis, drive and disk.

but at least you can have a 10mm hardox pusher to fight it, but i pity the new people coming into the class, with polycarb and maybe wood robots.

15kg is not a good idea!
dont like 13.6kg either.
how about 10kg? or 8.714kg?
at the end of the day ill build to whatever weight there is, if its 15kg then i can go that bit further