Excellent job on the cut down. What did you use, a blade or router?
Masked off with blue painters tape, marked, variable speed dremel with the large cutoff wheel that has the locking flange and a small hacksaw. course to fine sandpaper. From what i read online there many ways to cut including jigsaw. I had a dremel and finetooth hacksaw for plastic so i used those.Excellent job on the cut down. What did you use, a blade or router?
The stock OEM windshield proved to be a mess with wind hitting around the shoulders and helmet buffeting and noise level was totally unacceptable. I dove deep into windshield design with many trial and error designs and ended up with one design for cooler weather and another design for hot days. I made a "short" and "long" version of videos showing much of the iterations that the designs went through to obtain a nearly perfect wind protection (cool days version). The OEM windshield was raised up 4 inches and a left and a right wing was added and also a clip on extension on top. The final version is quite big but that is what it takes to reduce wind noise by 90% and reduce helmet buffeting by 95%. My YouTube Channel is dedicated to the upgrading and accessory installation on the Versys X300. Check out ath many videos on a lot of common add ons and mods. This the link to the short version of the windshield designs: (468) Kawasaki Versys X300 2017-2022 (short version) Designing Windshields for summer and winter - YouTube1. For reference I am 5' 11" with a 31/32" inseam. The OEM windscreen at 50 plus created tiresome buffeting/noise that would really annoy me, and I always wear earplugs. After many searches I found a photo on ADV Rider of a cut down shorter OEM windscreen. The poster was similar to my height/inseam. I decided to give it a try. I taped, measured and cut the windscreen to 9.25" from top to bottom centered between the two lower mounting holes. Very happy with the results. wind hits mid chest and cools my upper body with my mesh jacket or other jackets with vents open or zipper dropped partially down. The facial buffeting is much better. Its not silent but the harsh annoying part is mostly gone. I will use this for the hot summer months.
2. For cooler or cold weather I am using a National City V-stream Mid-height with a puig size medium clip on. The clip on gets me mostly out of the air while still allowing me to look over and not thru the screens. The national city is thick and solid. It doesn't really move even at highway speed. I can ride with the visor cracked when cold for defogging but don't get blasted by heavy airflow. I usually crack the visor when i stop when really cold and sometimes forget to close it because the wind is manged so well by the screen.
3. Both screens work with my sw motech accessory mount. I have the OEM wind deflectors and they clear the National city screen without touching at full steering lock. PS --when I called national city to check about OEM wind deflector clearance they did not think there would be enough clearance but there is.
I saw your post. That is great work. I used your videos to convert to LED lights and Dunlop Trailmax tires. Thanks for all the great posts.The stock OEM windshield proved to be a mess with wind hitting around the shoulders and helmet buffeting and noise level was totally unacceptable. I dove deep into windshield design with many trial and error designs and ended up with one design for cooler weather and another design for hot days. I made a "short" and "long" version of videos showing much of the iterations that the designs went through to obtain a nearly perfect wind protection (cool days version). The OEM windshield was raised up 4 inches and a left and a right wing was added and also a clip on extension on top. The final version is quite big but that is what it takes to reduce wind noise by 90% and reduce helmet buffeting by 95%. My YouTube Channel is dedicated to the upgrading and accessory installation on the Versys X300. Check out ath many videos on a lot of common add ons and mods. This the link to the short version of the windshield designs: (468) Kawasaki Versys X300 2017-2022 (short version) Designing Windshields for summer and winter - YouTube
Nice work and a well-written report. I had actually been on the fence about buying that very same National City windscreen. I'm a little shorter, at 5'08", so maybe I won't need the additional spoiler. The fact that it accommodates handguards is icing on the cake. (I have BarkBusters installed on mine.) Perfect, thanks!1. For reference I am 5' 11" with a 31/32" inseam. The OEM windscreen at 50 plus created tiresome buffeting/noise that would really annoy me, and I always wear earplugs. After many searches I found a photo on ADV Rider of a cut down shorter OEM windscreen. The poster was similar to my height/inseam. I decided to give it a try. I taped, measured and cut the windscreen to 9.25" from top to bottom centered between the two lower mounting holes. Very happy with the results. wind hits mid chest and cools my upper body with my mesh jacket or other jackets with vents open or zipper dropped partially down. The facial buffeting is much better. Its not silent but the harsh annoying part is mostly gone. I will use this for the hot summer months.
2. For cooler or cold weather I am using a National City V-stream Mid-height with a puig size medium clip on. The clip on gets me mostly out of the air while still allowing me to look over and not thru the screens. The national city is thick and solid. It doesn't really move even at highway speed. I can ride with the visor cracked when cold for defogging but don't get blasted by heavy airflow. I usually crack the visor when i stop when really cold and sometimes forget to close it because the wind is manged so well by the screen.
3. Both screens work with my sw motech accessory mount. I have the OEM wind deflectors and they clear the National city screen without touching at full steering lock. PS --when I called national city to check about OEM wind deflector clearance they did not think there would be enough clearance but there is.
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Which brand/model do you have, that's unstable? If you mean "flimsy," then my Givi 4121 fits that description, and I actually did cut that one down. The little lip at the top edge caused more turbulence than it prevented, so I trimmed off about an inch. Taped it, marked a line, and carefully cut with a hacksaw. Then finished the top with progressively finer grades of sandpaper, on a sanding block. Looks like stock. But that still didn't change it from being too damn flimsy! 😅I have a second tall windshield that is too unstable at speed. I think I may cut it down as described in the OP. I've done this before with good success.
FYI - If you're into aesthetics, you can spray paint the back side of the short shield. It looks very cool.
I don't know. I purchased the bike used with 1300 miles on it. The original owner gave me the extra shield and a new center stand. I tried the shield once and it moved around at just 50 mph.Which brand/model do you have, that's unstable? If you mean "flimsy," then my Givi 4121 fits that description, and I actually did cut that one down. The little lip at the top edge caused more turbulence than it prevented, so I trimmed off about an inch. Taped it, marked a line, and carefully cut with a hacksaw. Then finished the top with progressively finer grades of sandpaper, on a sanding block. Looks like stock. But that still didn't change it from being too damn flimsy! 😅
Great info, for other readers, polycarbonate is much more resistant to cracks and damage than acrylic. It could be thought of as being rubbery, it takes a little more heat to bend, doesn't sand as easy but scratches easier than acrylic. It is superior to acrylic for a windshield for not breaking from impacts from the road. Cons are easy scratching and yellowing. If you're in question of the windshield type on your bike there should be a label stating the material, vast majority will be acrylic, cheaper material.I used Polycarbonate sheets to fabricate my windshield wings and cutting isn't difficult - starting with a new sheet it has the protective peal off sheets on it. Polycarbonate behaves like wood. I marked and cut with a Sabre saw using a metal blade (10 tpi ). Next I used a course file to reduce the big lumps and bumps then worked my way down to finer and finer files. On to sand paper with 120 grit, then 200 girt. Take care of any scratches. The edge should just look frosted. Then I used 0000 steel wool and the edge takes on a semi-clear bluish color. Check for scratches and fix any (this depends on how picky you are. Wipe down and clear off all the dust that sticks to the sheet. Test fit / drill any other tasks and peal off the protection and you are done.
Update:Nice work and a well-written report. I had actually been on the fence about buying that very same National City windscreen. I'm a little shorter, at 5'08", so maybe I won't need the additional spoiler. The fact that it accommodates handguards is icing on the cake. (I have BarkBusters installed on mine.) Perfect, thanks!
Too bad it didn't work out. You never know until you try. Screens results are very personal and have many variables. I'm currently using the cut down oem. Working good for cooling to the chest and much less helmet buffeting.Update:
Since that post, regarding the National City windscreen: Bought it / tried it / hated it / returned it.
That design is much more vertical than the Givi D4121ST that I'm currently using. The National City screen, in my experience, creates significant turbulence and buffeting coming just over the top. Riding at freeway speeds, my vision was constantly blurred from the continuous buffeting. No way I'm putting up with that, for any length of time.
I suppose I could've added a spoiler to the top, but why should someone spend even more money, on top of a significant purchase price, to get something to maybe work right. The other choice would've been to return it and buy the tallest of their versions, (I had bought the medium height, of the three models), which I'm sure would've done a better job of reducing turbulence and buffeting. But then I'd be looking through the windshield, rather than over the top, which is the way I and many other riders prefer. Adding a spoiler to the top of the medium screen would've had a similar result.
The current Givi windscreen is pretty good already, so any improvement would've been incremental. However, I do have some hearing loss and tinnitus, so I'm always on the look-out for ways to protect what hearing I have left. (And yes, I do wear NRR 32 soft foam earplugs and full-face helmet when riding, regardless.) Depending on wind conditions and the bike's speed, mostly on the freeway, there can still be some wind roar with the Givi, but those are variables that one often has to just put up with, in certain circumstances. (I'm thinking of that long, long day of riding coming up in August, westbound on I-80 into Nebraska...)
As always, that's just my experience, and "Your Mileage May Vary."![]()
EDIT: Nevermind, I found the information above. I'm recovering from outpatient surgery yesterday and taking a HD prescription pain med. Let's go with that excuse.Too bad it didn't work out. You never know until you try. Screens results are very personal and have many variables. I'm currently using the cut down oem. Working good for cooling to the chest and much less helmet buffeting.
9.25 inches from center of screen . 5ft 11 inches with a 31ish inseam. Your inseam an torso length matter as well because it places your head higher or lower relative to the top of the windscreen. There are two photos of the cut screen. One with a ruler showing 9.25 inches at the beginning of the thread.I have an extra screen I plan to cut down. Do you mind sharing the height you cut your screen to? Also, what is your height?
Thanks!