Honda CB500X

Main CB500X Boards => CB500X - General Chat => Topic started by: SWilson92 on April 16, 2019, 02:24:08 PM

Title: Windscreen Buffeting from Givi D1121
Post by: SWilson92 on April 16, 2019, 02:24:08 PM
Hello fellow owners,

Currently riding with a Givi D1121 touring screen and an Arai TourX4 lid - but thereís soo much buffeting going on! Iím 5ft 9 and the wind seems to pick up just under the visor!

Has anyone had a similar scenario? And if so, what did you do to solve it? Could anyone recommend a slightly taller screen?

Any answers will be great!

Thanks, Sonny :)
Title: Re: Windscreen Buffeting from Givi D1121
Post by: motorboy on April 16, 2019, 03:09:34 PM
*Originally Posted by SWilson92 [+]
Hello fellow owners,

Currently riding with a Givi D1121 touring screen and an Arai TourX4 lid - but thereís soo much buffeting going on! Iím 5ft 9 and the wind seems to pick up just under the visor!

Has anyone had a similar scenario? And if so, what did you do to solve it? Could anyone recommend a slightly taller screen?

Any answers will be great!

Thanks, Sonny :)
That shield only gets worse the taller you are-- tried one I'm 6ft didn't work at all-- I'm convinced on the pre 2019 it's the Mastard or nothing
Title: Re: Windscreen Buffeting from Givi D1121
Post by: ThirtyOne on April 16, 2019, 03:19:37 PM
*Originally Posted by SWilson92 [+]
Hello fellow owners,

Currently riding with a Givi D1121 touring screen and an Arai TourX4 lid - but thereís soo much buffeting going on! Iím 5ft 9 and the wind seems to pick up just under the visor!

Has anyone had a similar scenario? And if so, what did you do to solve it? Could anyone recommend a slightly taller screen?

Any answers will be great!

Thanks, Sonny :)

Went through the same thing. Have a thread about my windscreen trials and tribulations. The Aria XD4 for me is the worst for buffeting as well. With my Givi screen it's only compounded.
Title: Re: Windscreen Buffeting from Givi D1121
Post by: SWilson92 on April 16, 2019, 09:59:35 PM
Motorboy and ThirtyOne,

Thanks very much for you're replies!
ThirtyOne - I've read through your thread; that's some pretty extensive testing you've done there!

Can you just confirm what Givi Screen you have and also what MRA x-creed add-on you were using? looks like the ideal set-up! (I would hate to order one that's not the right size ha ha!).

Kind regards,
Sonny
Title: Re: Windscreen Buffeting from Givi D1121
Post by: Mister Paul on April 16, 2019, 10:18:57 PM
*Originally Posted by SWilson92 [+]
Hello fellow owners,

Currently riding with a Givi D1121 touring screen and an Arai TourX4 lid - but thereís soo much buffeting going on! Iím 5ft 9 and the wind seems to pick up just under the visor!

Has anyone had a similar scenario? And if so, what did you do to solve it? Could anyone recommend a slightly taller screen?

Any answers will be great!

Thanks, Sonny :)

I'm 5'10", and didn't have problems with that screen on my last X. You can try messing with the angle and distance with longer bolts and tap washers. Some people find that improves things.
Title: Re: Windscreen Buffeting from Givi D1121
Post by: Gills on April 17, 2019, 11:44:12 AM
I have a Givi screen and suffered a lot of buffeting initially. Using spacers on the mounting bolts significantly improved things for me:

(https://cdn.img.cb500x.com/tn1024_ScreenSpacers1.jpg)

Might be worth a go, but as I'm sure you've discovered, solutions tend to be a very individual! Good luck!
Title: Re: Windscreen Buffeting from Givi D1121
Post by: UKJeeper on April 17, 2019, 02:31:48 PM
I kept the stock windshield, but went with Palmer Products windshield mount. 9 different positions (18 if you count the 2 mounting positions on the 2016 and up models). One of them will get you some calmer air.

(https://images.weserv.nl/?url=ssl:live.staticflickr.com/65535/33751905028_4a63fe59f1_b.jpg)

(https://images.weserv.nl/?url=ssl:live.staticflickr.com/65535/47576458522_f3e210ed10_b.jpg)

http://s410372035.initial-website.co.uk/products/select-bike-a-j/honda-cb500x-cb400x-2016my/
Title: Re: Windscreen Buffeting from Givi D1121
Post by: richardbd on April 17, 2019, 02:40:22 PM
*Originally Posted by UKJeeper [+]
I kept the stock windshield, but went with Palmer Products windshield mount. 9 different positions (18 if you count the 2 mounting positions on the 2016 and up models). One of them will get you some calmer air.

(https://images.weserv.nl/?url=ssl:live.staticflickr.com/65535/33751905028_4a63fe59f1_b.jpg)

(https://images.weserv.nl/?url=ssl:live.staticflickr.com/65535/47576458522_f3e210ed10_b.jpg)

http://s410372035.initial-website.co.uk/products/select-bike-a-j/honda-cb500x-cb400x-2016my/

I also tried the Palmer Screen Adjuster but eventually gave up and ditched it.  It wasn't that great on noise or buffeting but the real problem was wobble.  With a larger screen and a satnav on the accessory bar, over anything other than ultra smooth tarmac the whole screen mount wobbled so much it looked and felt like fit was about to fall off.

I've now got a Puig touring screen (with lip) fitted to the OEM screen mounts but with Rally Raid (5mm?) spacers.  The result is as good as anything I've tried.  Pretty quiet up to 55-60mph in my Schuberth E1.  Good to motorway speeds if I remove the E1 peak.

I'm 6', 32" in-seam...
Title: Re: Windscreen Buffeting from Givi D1121
Post by: ThirtyOne on April 18, 2019, 05:25:01 AM
*Originally Posted by SWilson92 [+]
Motorboy and ThirtyOne,

Thanks very much for you're replies!
ThirtyOne - I've read through your thread; that's some pretty extensive testing you've done there!

Can you just confirm what Givi Screen you have and also what MRA x-creed add-on you were using? looks like the ideal set-up! (I would hate to order one that's not the right size ha ha!).

Kind regards,
Sonny

You're right, it's been an expensive process, but it's something that I really needed to figure out. Otherwise riding at anything over 50mph is severe turbulence and buffeting. So, it is what it is.

This is Givi screen for our bike, the only one they make
https://www.revzilla.com/motorcycle/givi-d1121st-windscreen-honda-cb500x-2013-2016

and this is the x-creen

https://www.revzilla.com/motorcycle/mra-x-creen-tour-variable-windscreen-spoiler-blade

I actually found a used 13-15 OEM tall screen on eBay for half price and couldn't resist scooping it up. I think that with that screen, the Bruudt brackets and the x-creen I'll get the height I need for highway slabbing and will be able to lower it when I'm off road. The Givi screen with the x-creen is quite tall together, and while it's great for highway, I'm looking through the screen on hills and when dodging potholes and rough terrain. After having ridden naked bikes for years, I'm just not happy looking through screens.

The OEM screen is in the USA and I won't get it until I go back there in June to visit my family, so for now I'll keep the Givi/x-creen combo and will give the OEM tall screen a go when I come back to Honduras at the end of June.

Good luck with your quest.
Title: Re: Windscreen Buffeting from Givi D1121
Post by: ThirtyOne on April 18, 2019, 05:27:57 AM
*Originally Posted by Gills [+]
I have a Givi screen and suffered a lot of buffeting initially. Using spacers on the mounting bolts significantly improved things for me:

(https://cdn.img.cb500x.com/tn1024_ScreenSpacers1.jpg)

Might be worth a go, but as I'm sure you've discovered, solutions tend to be a very individual! Good luck!

Very nice. What did you use for the spacers?

I tried cutting up a pen but the plastic split. I know some others are using washers, but would prefer to find something more on the rubber side of things so the screen doesn't get any cracks.
Title: Re: Windscreen Buffeting from Givi D1121
Post by: gregjet on April 18, 2019, 09:35:42 PM
Been through this quite a few times on this and other forums.
Base cause: Wind buffetting is caused by Vortex shedding from the screen ( in this case). The flow of air around the screen creates a vortex ( look it up. Many good explanations) behind the screen that then lets go and travels ( relatively) backwards. The pressure vectors are of course all over the place so push in all sorts of directions when they cross you.
The solution is either to stop the vorticies forming in the first place or create a standing vortex that stays attached ( Kamm spoiler).
Things to try:
Spacer upper screen: Add a small screen at the top of the existing one spaced about 1 to 2 cm from the main screen with a few cm overlap. Try both infront or behind. There is quite a few pics on this forum of this arrangement.
Space the main screen so there is flow from underneath the leading edge up the inside of the screen. You will have to play with angles. At motorcycle speeds 1 to 2 cm will usually do it. You are trying to get a linear flow to the top , but any reasonable flow will reduce the vortex intensity.
Put a tank bag on that is high enough to make the flow around the screen stay more linear ( ie stay attached to the line between the screen and the back of the rider). This can be useful and very effective.
If you wear and adventure helmet, like I often do ( Arai XD4) , cut the visor shorter. You really only need it long enough to keep the sun out of your eyes on the road, not protect you from branches and mud. It helps reduce the "snap" when you turn your head or the vortex hits it.
The pic below shows a spaced visor fitted to a modified Cagiva raptor air splitter I made. Note the spacing between the screen and the air form. This setup has zero buffetting and very little body and helmet pressure.
Title: Re: Windscreen Buffeting from Givi D1121
Post by: ivanc on June 24, 2019, 09:21:02 PM
*Originally Posted by SWilson92 [+]
Hello fellow owners,

Currently riding with a Givi D1121 touring screen and an Arai TourX4 lid - but thereís soo much buffeting going on! Iím 5ft 9 and the wind seems to pick up just under the visor!

Has anyone had a similar scenario? And if so, what did you do to solve it? Could anyone recommend a slightly taller screen?

Any answers will be great!

Thanks, Sonny :)

Hello, I am pretty much as tall as you, I use an X-CREEN-SPORT from MRA and I have no buffeting on my face, only feel something by my shoulder blades. You need to play around a bit with the positions.
(https://cdn.img.cb500x.com/IMG_20190615_170351.jpg)
Title: Re: Windscreen Buffeting from Givi D1121
Post by: Gills on June 25, 2019, 10:45:37 AM
*Originally Posted by ThirtyOne [+]
Very nice. What did you use for the spacers?

I tried cutting up a pen but the plastic split. I know some others are using washers, but would prefer to find something more on the rubber side of things so the screen doesn't get any cracks.

Sorry, I missed this at the time. I think I used some spare fuel hose (reinforced rubber pipe) to make the spacers.
Title: Re: Windscreen Buffeting from Givi D1121
Post by: Mister Paul on June 25, 2019, 10:56:15 AM
*Originally Posted by Gills [+]
Sorry, I missed this at the time. I think I used some spare fuel hose (reinforced rubber pipe) to make the spacers.

Tap washers work, and they're rubber.
Title: Re: Windscreen Buffeting from Givi D1121
Post by: ewryly on June 25, 2019, 02:12:42 PM
*Originally Posted by ivanc [+]
Hello, I am pretty much as tall as you, I use an X-CREEN-SPORT from MRA and I have no buffeting on my face, only feel something by my shoulder blades. You need to play around a bit with the positions.
(https://cdn.img.cb500x.com/IMG_20190615_170351.jpg)

As a result of following ThirtyOne's trials, I put an x-creen-sport on my 2018 original screen--I'm also 5'9"--and I am very pleased with the result.  I do have mine basically vertical rather than following the angle of the screen, but they are so easy to adjust and they seem very well made.  It doesn't get rid of all the wind, but it eliminates that chattering wind that blurs one's vision at 55 mph and above.  I highly recommend it.
Title: Re: Windscreen Buffeting from Givi D1121
Post by: RDW on June 26, 2019, 01:06:17 PM
Same thing here . It's not perfect, but it's a big Improvement..
Title: Re: Windscreen Buffeting from Givi D1121
Post by: harryhendo on June 26, 2019, 01:31:45 PM
On my 2016, I replaced the stock screen with a California Scientific screen. Easy 10 minute installation with the same bolts. No more buffeting, and smooth sailing. I can even hear the engine now. I'm 6 foot and about 180 lbs. and see over it, so it is not in my field of vision.

I've taken two 2000 mile+ trips with this bike, one with the stock, and one with the California Scientific screen, and the second one was much more enjoyable.

(https://cdn.img.cb500x.com/IMG_20190517_163110099_HDR.jpg)