This is kind of old but here's the pond baby! I tried to make a sub 250g seaplane ages ago. Actually worked pretty well though it's underpowered since a 460mA 2s was literally the only battery it would balance correctly with. There is not a lot of room inside this thing.
I did think about maybe publishing plans for it. I also want to build one at 250% scale which would give it a 60" span. If I do build another I think I'll give it a T-tail since it really liked to completely submerge the tail whenever I rotated to take off.
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