Okay, I finally got around to installing a vent in the stock windshield.
I got a GL1800 vent for cheap on eBay and traded for a stock Tourer windshield. Neither of these items were in pristine condition but that's okay since I was experimenting with this whole idea anyway.
The spot I picked to place the vent wasn't scientifically chosen in a windtunnel. Instead, I placed a piece of tape on the windshield where I thought I wanted it and rode around to make sure it wasn't going to block my field of view. All was well so out came the cutting tools. My cordless Dremel battery was uncharged so I started with a drill at the corners and then went to a cordless 4-1/2" circular saw. I finished up with an angle grinder to get a tight fit.
The Goldwing vent is designed for a windshield with more curvature in it than the Tourer, but there is enough flex to make it work. So far, it seems to be staying in place.
How well does it work?
Unfortunately, it's not like sitting in front of a 200mph fan, even when cruising down the interstate. But there is air flow where there wasn't before. I can feel a cooling breeze of air catching me at the neck. It's not enough to shake my helmet around, but enough to cool my neck. If I add a wet bandanna or kool-tie, it should work very well.
As an added bonus, all the wind buffeting is GONE. The air coming thru the vent mixes with the air coming over the top of the screen to smooth the flow. I even removed the spacers I had and set the screen back at the original angle.
When I place my hand up by the vent, I can feel the airstream coming in, but as I move away from it, the high velocity flow dissipates quickly as it gets into the vortex of the screen
Overall, 2 thumbs-up!!
If I were to do it over, I might try putting it a bit lower on the screen. This might help put it closer to the center of pressure on the screen and also dump the air on my torso rather than my neck. I should have noted the center of pressure on the screen when riding in the rain. It would be seen as the point at which the water droplets start dissipating from. A vent in that location would catch the most air.
(excuse the mess of a garage)
I got a GL1800 vent for cheap on eBay and traded for a stock Tourer windshield. Neither of these items were in pristine condition but that's okay since I was experimenting with this whole idea anyway.
The spot I picked to place the vent wasn't scientifically chosen in a windtunnel. Instead, I placed a piece of tape on the windshield where I thought I wanted it and rode around to make sure it wasn't going to block my field of view. All was well so out came the cutting tools. My cordless Dremel battery was uncharged so I started with a drill at the corners and then went to a cordless 4-1/2" circular saw. I finished up with an angle grinder to get a tight fit.
The Goldwing vent is designed for a windshield with more curvature in it than the Tourer, but there is enough flex to make it work. So far, it seems to be staying in place.
How well does it work?
Unfortunately, it's not like sitting in front of a 200mph fan, even when cruising down the interstate. But there is air flow where there wasn't before. I can feel a cooling breeze of air catching me at the neck. It's not enough to shake my helmet around, but enough to cool my neck. If I add a wet bandanna or kool-tie, it should work very well.
As an added bonus, all the wind buffeting is GONE. The air coming thru the vent mixes with the air coming over the top of the screen to smooth the flow. I even removed the spacers I had and set the screen back at the original angle.
When I place my hand up by the vent, I can feel the airstream coming in, but as I move away from it, the high velocity flow dissipates quickly as it gets into the vortex of the screen
Overall, 2 thumbs-up!!
If I were to do it over, I might try putting it a bit lower on the screen. This might help put it closer to the center of pressure on the screen and also dump the air on my torso rather than my neck. I should have noted the center of pressure on the screen when riding in the rain. It would be seen as the point at which the water droplets start dissipating from. A vent in that location would catch the most air.
(excuse the mess of a garage)
and I had
just opened the doors to take the pic so it really was 104F in there! 
)
