I was at the Harley dealer to buy a pair of front bullet signal lites for my 03 RK and saw the wind deflector on a rack. I posted earlier I would check the used market for them, but went ahead and bought them anyway. I couldn't wait to try them out on Labor day since I had about a 300 mile ride planned in the mountains. However, it started wrong when after installation I noticed I couldn't turn the handlebars much without the deflectors contacting the front crash bars. I mean when I got to about 5 oclock with 3 oclock being the stationary position, contact was made. It was so bad I figured this couldn't be normal. I figured what the hell and proceeded to bend them by slowly turning the deflectors into the crash bar. This worked well, but there is a extra crease in the deflector now. I bent them enough where I had enough clearance to at least turn the bars for both high and low speed stuff, only going backwards at just under full wheel lock is contact made. I wanted to try them out regardless of the bending just to see if they improved the buffeting problem I've been fighting with to the tune of three windshields in the last six months. It was worth it to me to bend them up and if I don't like them I'll take a loss and sell them. The instructions made it sound like all you had to do was make a slight alteration if contact with the crash bar is made. In my case it was a major alteration.
In the looks department they weren't as bad as I had imagined before. Prior to the ride I pumped up my rear shock to over 10 lbs., I mentioned this because it influenced how the deflectors worked later.
Got out to the highway, while accelerating I picked up some vibration which caused some visual blurring, but this was only occurring at a certain rpm, it went away as I went faster. There were a number of cars on the road, the winds were pretty mild, but the cars as we know causes wind turbulence and thats a pretty good test for the deflectors. At around 50-55mph I noticed the front end would get pushed around more than usual by the wind turbulence. It was clear to me the deflectors were acting like a sail or a wing, this caused the bike to push left or right, not badly, but enough to notice. I really didn't like that element, but noticed as well the setting I had on my air shocks was much too stiff. I had to contend with the rear end taking some hits from bumps, not a plush ride at all. I was focusing on those issues more than wind buffeting so I decided to stop and adjust the air pressure in the shocks. I did that and it made a world of difference in my perception of the bike's handling from the standpoint of having the deflectors on. At least now I could give them an honest assessment.
Another factor was my windshield, my current shield is 18" and I have a 19-20" at home. I look over the 18" and actually feel it might be a little too short. The 19" to 20" is a little too tall, the windshield line interfers with my vision in many circumstances. However, it offers the better protection against buffeting.
After riding for about an hour I came to the conclusion the air deflectors did improve the buffeting situation noticibly and it helped I softened the shocks too. That had nothing to do with deflecting wind but it did influence my initial opinions about the deflectors. There is the pushing around issue that takes some getting used to, after awhile I didn't even notice it anymore, I was just happy the wind buffeting was pretty much neutralized.
I'm looking forward to putting the taller windshield back on and see how much more improved the situation will be. If need be I can cut that windshield down an inch and that just might be spot on. I'm trying to get as close as I can to replicating that "quiet zone" right behind the windshield when you crouch down and move forward closer to the shield. All you notice in that position is the quietness of the air and the sound of your motor purring like a sewing machine.
I understand you can't stop all the wind, my goal was to minimize wind buffeting and the deflectors achieved the goal for me. :clap:
Off the subject, but I also replaced my headlamp with a Sylvania 9003 Ultra bulb and its noticibly brighter than stock. Haven't tried it at night, but I think its gonna be good. I got it as a result of reading a thread here about headlight upgrades. I'll upgrade the passing lamps next.