Briefly the Cadet Class rules (unofficial class) :

Standard FRA rules for Featherweights

- Materials limited to steel, aluminium, plastics and wood
- Motors limited to 150w DC or generic drills
- Robots with SLA batteries allowed extra 1.5Kg
- Pneumatics limited to 10bar
- Spinners limited to 1Kg and 200mm dia max spinning mass

As Ewan says, low entry level low cost for newbies but still part of the main XFM show.

Ed
http://www.extremefightingmachines.comhttp://www.extremefightingmachines.com