cpbambam101
The 4-1 isn't sealed at all. I haven't flown my blade in the snow yet. I did fly the fp I had last winter in the snow. I would just make certian to blow out the electronics before any snow that might have gotten in had a chance to melt when you bring it in. I have a small air compressor for that sort of thing. Following that, I would put the heli near a heat vent to make certian it had dried completely. Worked great last winter and I'm waiting for the crazy amount of wind we've had here lately to die down. I've got about 14" snow right now which makes for a great emergency landing zone.
Mark