I thought not with heavies... the particular fight I remember seeing was Manta vs Eruption in the European Championships, and that ended up having plenty of lift for a double flip, and that was 100 kilos, with half the weight I could probably see there being a lot of an issue.

Glad to hear it's alright for the Robochallenge arena though, may pursue that route with a featherweight clusterbot somewhere down the line!

Would it be the polycarbonate roof (of the sort that'd be needed to make an arena spinner-friendly) that would be needed for a heavy clusterbot to be usable, or is it just generally the height of the arenas that'd prevent them being used, even if there were a solid roof on there?