mvivion said:
Are they STC'd? Or does that matter?
Nope, that added expense is not what I need (part of the reason I'm not certified).
I wouldn't even THINK of plastic VGs on an airplane that operates in winter my own self.
Here's what they say about "cheap plastic"...
Q: Won't that "cheap plastic" not last long?
A: Our plastic is General Electric UV stabilized Lexan, the same material used in skylights in desert homes. It definitely isn't cheap and is very similar to materials already used in many aircraft windshields. If left out in the baking sun for decades you would probably notice some aging (just like paint) and if that's your plan then we suggest you paint your VG's to match your aircraft.
So, for $100 I think I'll try 'em. If they don't work out, THEN I can spend the $1500.