Most of us with the Givi windshield know about the back pressure problem when you reach speeds of 50mph+

I was wondering whether anyone has experimented with modding the screen in various ways to see if this effect can be removed/reduced?

I know some people have cut the top off, but that sounds like hard work and I suspect it will never look as good around the new edge.

I was thinking more along the lines of attaching something to the screen to disrupt/divert the flow, e.g. a inverted triangle shape (perhaps made of clear perspex) lower down the screen could force the air to flow more to the sides and feasibly by the time it reaches the top the pressure might be significantly reduced.

Perhaps there's a way to attach something to the top, a sort of extended laminar lip perhaps, that would push the back pressure flow somewhat higher?

Has anyone here tried something other than cutting off the top section?

Vetter Snap Vents ( http://www.craigvetter.com/pages/Online_Store/Replacement_Parts/Details.html ).

Has anyone tried these for getting rid of the problem?

wingnprayer,

Thanks for bringing this up (and thanks to honda_silver for the suggestions). I've been thinking about venting mine, too, and I've been leaning toward trying to make a Goldwing vent fit (something along these lines: http://www.saber-cycle.com/store/product197.html ). But I'm going to look into these other options now, too.

I'll post some pictures if/when I end up doing it (probably won't be until the end of August) and let people know how it turns out.

I had a really rough ride yesterday at 80 miles an hour with my new Givi. It was scary and unpleasant, severe buffeting and I could feel the impedence of the big shield slowing the Wing down.

So, I had read about puting an edging around the handguards to disrupt the laminar flow off the side to disperse the turbulence. My aircraft mechanic buddy said yeah, but along that crease where the shield rises, you're gonna get a real blast coming back off that.

So we went to the auto parts tore and got some plastic door edging, at first I thought chrome, but the black looked cooler, so I bought the 2 2 foot sections instead of the 18 foot roll.
We started at the bottom, and it slipped right on, it was kinda stiff, but it came out pretty solidly attached. The 2 foot section came to just over the top curve, and then I didn't want it in my line of sight, so perfect. The top is still clear.

I'll test it today at 80 MPH and see if it solves the turbulence problem, if not, I'm gonna have to cut the handguards off and see if that works.

Well, it seemed a little smoother, but the wind was already blowing at about 30, so I just went for a short ride at 45 MPH. I'll have tie some streamers on or find a wind tunnel and a smoke machine.