Those big Harleys ain't right anyway .       I also suspect there is something wrong with anybody who would spend $20,000 + on a Cheep-Transportation-Vehicle .

It seem like Harley would balance there motors better so they didn't need "Super-Soft" rubber mounts to keep the motors in the frames.

That being said :  I haven't found any major flaws with the 883 (2007) Sportster yet.   One of my brothers got a "solid-mounted-motor" 1200 sportster (1994 all chopped out looking) last summer.   I rode it a few miles two weeks ago --- , it reminded me of a 1972 BSA I rode last spring , vibrated more than a little.  

Easily seventy five or eighty percent of the bikes I encounter out on the road are Harleys, a lot of them big twins with big fairings, bags, trunks etc.  How come all those guys aren't dead or in the hospital?

Local CBS affiliate someplace. I taking this one with a pretty large grain of skepticism I'm afraid,

I've seen a stretch of road that scares me. No visible marks on the road. Nothing that I can see that would make it shake, but it was exciting and unfunny, I THINK it was that way coming and going, both trips.. so, I have a hard time condemning the windshield as catching a breeze,,

When you have Documented Evidence of the Fact that the HD is misbehaving, better to find out why.
The 05 without any windshield, and shocks set up tight acted like a drunk rubber cow on a local sweeper..
I have not tried a full on assault with the 02.
Just got the new Metzler rear tire in yesterday, now, gotta get it ON.

This is the first I've heard of it. Never had much desire for a big Harley before and even less likely to end up with one now. A Sportster would be nice but I still prefer smaller lighter bikes.

Jog:

One fellow on the forum mounted a tool roll under his headlamp, and it caused his bike to wobble at speed.

I haven't read that any of our folks have had problems with their windshield causing a problem - but I can believe it is possible.

The road I was riding on last Sunday had several patched areas in the asphalt....and it appears that they drove a backhoe on the patches and it imprinted the tractor tread into the asphalt.  That created some spooky vibrations while I was leaned over in a few corners!

Aint just Harleys:

http://hondaf6b.com/showthread.php?2134-Does-Anyone-Have-Front-Wheel-Wobble

Reading through the thread, a lot of this is just the usual MC forum bickering but the issue has been around on GWs for a while, with all sorts of opinions as to cause and cure.

Here's one that focuses on HDs:

http://ridermagazine.com/2009/11/17/motorcycle-weaves-and-wobbles-how-to-avoi...

ANY motorcycle (or bicycle for that matter) is susceptible to headshake or weave under the right combination of speed, rider input, suspension, road surface, weight distribution, mechanical condition etc.

I rode a buddy's beat-to-sh*t CB 750 years ago that started a high speed weave at about 70 that could only be controlled by laying down on the tank and gently rolling off the throttle. We never did figure out why it did that. That bike was entirely stock, and when I rode it at least, had nothing tied, strapped, or bolted to it anywhere.

I still think  the the CBS story was basically just a hatched job.

Weaves and the more violent head shaking has been well documented and filmed since at least the 50s.  Some models seem to be more prone than others, like the short wheelbase BMW R60/5s & R75/5s in the early 70s.  BMW lengthened the swing arm after a couple years and solved the problem but many are skeptical and believe it was never a problem.  I recently bought an early short wheelbase /5 toaster tank and am in the slow process of restoring it.  When I get it on the road next summer I guess I will find out if it shakes or not.