this just comes from talking to people who've said the flip 3d is too heavy for proper 3d as it's heavier than most .40 size 3d machines in it's class. But then it's a much bigger plane than most other .40 planes, it's a good 3 inches bigger span and a much bigger chord than the C50. This is what I'm trying to get at. People should be worried about wing loading than weight?