Good post. I'll keep that in mind for future parking. :-o
In this particular case, that's impossible -- taking in to account:
- The orientation of the bike & sun,
- The time of day (late afternoon, sun coming thru front right side of windscreen),
- and the fact that I came out and saw the sunlight focused thru the 'bead' (thickened part) where the screen meets the cowl, with a very bright spot right where the melted area was...
all conspire to tell me that this was due to the thickened part of the Givi screen acting as a lens. Afterwards, I could see that it acts as a magnifying lens just by looking thru the base of the screen, at a piece of paper -- at least on my screen.. I'll admit that it could have been a manufacturing flaw.
You can see that the base of the screen has much thicker plastic where it meets the cowl, from this (admittedly poor) photo:
Notice how there is a pronounced 'thickening' or curvature at the base.
You can see the pronounced curvature where the screen meets the cowl on another model (CBR600RR):
Next time you look at your Givi, or see one on a bike, check it out. Also, does anyone have a high-quality closeup photo of the thick area where the Givi meets the cowl?
-Mike
(Inactivist)