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Discussion Starter #1 (Edited)
I had not realized how spoiled I was with the CalSci windshield until I recently broke off about a 3d of it. :)crying:Oops.)

200 miles later, I was home and thought I’ll just put the stock shield back on. Not IMHO! Unequivocally, it sucks!:eek:ld: The 2/3s of the CalSci provided more protection than the stock windshield, at least if I leaned a little left.

After reviewing this forum’s windshield thread (thanks to those contribute:clap:), I have some thoughts on the stock GT shield and why I’ll be replacing it with the CalSci (again).

The lip on the Aeroflow and Calsci diverts air and the lighter bugs and light rain drops around or over me, even when I am looking over the shield.

I agree with this Chris on the Street's 2014 youtube of the Aeroflow. The Aeroflow is great, and allows more air in the face when fully lowered. But I just want all that air gone.

This post agrees with Chris. https://www.k1600forum.com/forum/bmw-k1600-accessories/5077-aeroflow-vs-calsci.html

No one seems to be jumping on Jurock bandwagon, though for $205 it looks like a good deal (beware of shipping (and handling!) costs). But here is a pro and con post.

https://www.k1600forum.com/forum/bmw-k1600-accessories/112418-7jurock-windshield.html
https://www.k1600forum.com/forum/bmw-k1600-accessories/36401-best-windshield-yet-took-4-find.html

I don’t see the value for the Wunderlich Ergo for $457.95 (Wow).

https://www.k1600forum.com/forum/bmw-k1600-accessories/97098-wunderlich-ergo-stateside-review.html
https://www.k1600forum.com/forum/bmw-k1600-accessories/90977-new-wunderlich-ergoscreen-k1600.html

Why does the stock shield suck?

First, what is the V on the stock shield for? Maybe some of you Wonderlich riders can answer since that shield has a similar V. All it seems to do for me is to make sure air hits about eye-level then is directed over the top. All that air going over the top is noticeably noisier in the helmet. I know most of us ride with full-face helmets, but for those like me that may or not, disregarding the noise, that is a lot of air in the eyes.

Second, I know one can raise the shield to prevent the air in the face, and the resulting noise in the helmet. But this results in (1) more air on the shoulders and sides, (2) having to look through the shield, and (3) really doesn’t do much to abate the noise in the helmet.

Finally, there does not seem to any deflection of the air up as it comes over shield. At least not enough to lift even the slightest drizzle much less the random bug. I could rely on my CalSci to divert wind, medium rain, and bugs over and around me when going above about 45 mph.
 

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On the damaged windshield: I think it is unacceptable that a windshield breaks in a way that it produces sharp edged, dangerous shards and fragments that can cause serious injuries. This damage pattern does not speak fora superior material like Lexan that a few manufacturers use. I doubt, that a windshield like this would pass the certification over here.
 

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While I agree with the O.P. regarding the stock GT shield's notch being noisy and not directing the air up and over the helmet, I disagree about the Cal-Sci shield being a superior alternative for exactly the reason @ViennaK points out. Acrylic (even aircraft grade like Cal-Sci uses) is a far inferior material to polycarbonate for motorcycle windshields. The hole in the Cal-Sci shield is brilliant and works very well in eliminating the back pressure generated by the stock shield but I'm not willing to step away from the polycarbonate of the O.E.M. shield. Personally, I just cut the Cal-Sci hole in a stock GTL shield and gain the best of both worlds. I've posted this video before but think it may be worth posting again...

 

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For Windshields I can say:

don't make wrong placed savings. (Spare nicht am falschen Fleck)

I can recommend:

PUIG https://puig.tv/
ISOTTA https://www.euronetbike.net/isotta/
GIVI https://www.givi.co.uk/


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Discussion Starter #5 (Edited)
Can't disagree with the video, though I am wondering if they used the Impact Modified Acrylic that CalSci uses - a DOT approved acrylic. I think they did bc I didn't see any dangerous shards flying through the air. Either way, I will play devil's advocate.

Granted, my windshield broke but it was more force than my car windshield could take. I didn't notice any "sharp edged, dangerous shards and fragments." I wish I didn't throw it in the trash so I could shoot it with my shotgun. Dammit.

CalSci claims to "test their windshields by shooting them with a .22 caliber rifle and verifying that the windshield maintains its basic integrity without shedding small pieces that could impact your face or eyes."

I guess the best counter argument is that none of us have replaced our car windshields with a poly-carbonate shield. They would be useless after one rain using wipers due to the scratches, and then would be eventually become cloudy. Though car safety glass won't puncture your chest, I promise those things have lots of sharp edged shards will cut you.

So I assume DOT agrees that we'll be ok, or at least at no more risk than in our cars. Of course they are same ones that let people ride motorcycles. Only an idiot would do that, so what do they know?

Anyone ever been cut by Impact Modified Acrylic?
 

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You make your choices and I make mine. BMW uses expensive and more difficult to process polycarbonate for a reason and so does Wunderlich and a few others. And I ain't pulling out a gun and try to shoot at the shield for approval.0:)
 

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I had not realized how spoiled I was with the CalSci windshield until I recently broke off about a 3d of it. :)crying:Oops.)

200 miles later, I was home and thought I’ll just put the stock shield back on. Not IMHO! Unequivocally, it sucks!:eek:ld: The 2/3s of the CalSci provided more protection than the stock windshield, at least if I leaned a little left.

After reviewing this forum’s windshield thread (thanks to those contribute:clap:), I have some thoughts on the stock GT shield and why I’ll be replacing it with the CalSci (again).

The lip on the Aeroflow and Calsci diverts air and the lighter bugs and light rain drops around or over me, even when I am looking over the shield.

I agree with this Chris on the Street's 2014 youtube of the Aeroflow. The Aeroflow is great, and allows more air in the face when fully lowered. But I just want all that air gone.

This post agrees with Chris. https://www.k1600forum.com/forum/bmw-k1600-accessories/5077-aeroflow-vs-calsci.html

No one seems to be jumping on Jurock bandwagon, though for $205 it looks like a good deal (beware of shipping (and handling!) costs). But here is a pro and con post.

https://www.k1600forum.com/forum/bmw-k1600-accessories/112418-7jurock-windshield.html
https://www.k1600forum.com/forum/bmw-k1600-accessories/36401-best-windshield-yet-took-4-find.html

I don’t see the value for the Wunderlich Ergo for $457.95 (Wow).

https://www.k1600forum.com/forum/bmw-k1600-accessories/97098-wunderlich-ergo-stateside-review.html
https://www.k1600forum.com/forum/bmw-k1600-accessories/90977-new-wunderlich-ergoscreen-k1600.html

Why does the stock shield suck?

First, what is the V on the stock shield for? Maybe some of you Wonderlich riders can answer since that shield has a similar V. All it seems to do for me is to make sure air hits about eye-level then is directed over the top. All that air going over the top is noticeably noisier in the helmet. I know most of us ride with full-face helmets, but for those like me that may or not, disregarding the noise, that is a lot of air in the eyes.

Second, I know one can raise the shield to prevent the air in the face, and the resulting noise in the helmet. But this results in (1) more air on the shoulders and sides, (2) having to look through the shield, and (3) really doesn’t do much to abate the noise in the helmet.

Finally, there does not seem to any deflection of the air up as it comes over shield. At least not enough to lift even the slightest drizzle much less the random bug. I could rely on my CalSci to divert wind, medium rain, and bugs over and around me when going above about 45 mph.

Well, I went with the tallest Ztechnik (ain't no bird gonna fly through that thing) and although it was far superior to the stock BMW shield in every way, no wind noise, no buffeting etc, I couldn't see over it in the lowest position. So I cut out a 2 by 8 inch piece at the top center and now I can see 100 feet in front of me without looking through it and the air still goes over my head. By far the best alternative IMHO.
 

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Just a reminder, if you have insurance on your motorcycle they will replace the windshield for free just like a car's windshield. Only difference is, you'll probably do the installing. :)
 

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Discussion Starter #10
Just a reminder, if you have insurance on your motorcycle they will replace the windshield for free just like a car's windshield. Only difference is, you'll probably do the installing. :)
Didn't even think about that. Thanks.
 
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