Author Topic: Wind screen extension  (Read 642 times)

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Offline MohKraats

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Wind screen extension
on: 19 April, 2021, 10:17:06 AM
Hello fellow bikers,

I have been fiddling about quite a bit with my bike, trying to find a wind screen that gives me a quiet ride, so I don't need those ear plugs no more.
I hate them earplugs, since they hinder me hearing what my bike is doing. (engine and mechanics like chain)

Finally now, I found a very nice setup.
I discovered that no matter what screen, you either sit in the wind, or have the wind turbulence from above, or have the wind in your neck.
All depending the height of your screen.
The best height of the screen turned out to be such that you still see over the top of the screen.
Just from roughly 10m in front of your bike. Closer by, you have to look through the screen.

This height gives you best wind protection, without the push in your neck when the screen is to high.

However, the top edge of the screen creates a lot of turbulence.
When this turbulence hits your helmet, it ends up in a lot of noise. :087:

The turbulence is caused by the sudden pressure drop when the pushed up air from in front of your screen falls into the void behind your screen.

I experienced that a screen extension helps out, no matter what screen you use.
At least as far as there is a slit between extension screen and the main screen.
Because this slit is what does do the trick. :038:
The air that rushes through that slit, does soften the pressure drop at the top end of the screen. (in this case top of extension screen)

Since I now have an extension on my main screen, the total at such height the I have my view just over the top end,
I now do have a very quiet ride at last ..... :047: :047: :047: :047: :047:

And regarding screen,
I ended up with a GIVI touring screen D320ST
The screen is a bit very flexible, but is comfortable.
Not suitable for high speeds where it leans back way too far or rough weather, where it starts flopping forth and back.

But all in all,

Use a screen extender !!
Last Edit: 19 April, 2021, 10:18:02 AM by MohKraats

#1

Offline KiwiBob

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Re: Wind screen extension
Reply #1 on: 20 April, 2021, 01:33:35 AM
Hi MohKraats,there is a long history on this forum of people looking for the best solution to the wind buffeting and noise off the top of the fairing. I think you have come to the conclusions of many people and having a taller screen with an extender/deflector is the solution. It is an upgrade I have not fitted to my bike yet.
What brand of extender did you install? Most people recommend the MRA extender.
When you say it flops around at high speed, how fast are we talking? Over 110km which is our speed limit here in most of Australia?
 Thanks, KiwiBob

#2

Offline MohKraats

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Re: Wind screen extension
Reply #2 on: 20 April, 2021, 08:24:23 AM
Hello KiwiBob,

Sorry for posting a known subject again.
Subject still valid though.
Anyway
The extension I used was a chinese one from Aliexpress.
The reason I purchased there was that I wanted to try it first before spending a load of money on that.
And secondly, this screen uses clamps for mounting, so it doesn't require to make holes in your screen.
But, still, the screen doesn't want to give in, even despite high speeds of above 200km/h when fully extended. :046:
Well, the screws start showing some rust quite quickly :034:, but overall, it is not too bad. :152:

Regarding the GIVI screen, that is an Italian brand screen.
And well, up to 110 km/h you should be fine. :002:
When you won't go over that, I can really recommend this screen. it looks good too.
It was at somewhere around 180 that I was afraid that it might crack :156: because it was bending over backwards so far. (that was with the extension installed, so a bit unfair to be honest)

#3

Offline MohKraats

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Re: Wind screen extension
Reply #3 on: 21 April, 2021, 08:40:53 AM
Ah, some detail I forgot about:

The GIVI screen in question is a:
GIVI D320ST

For the CBF MK1 that would be:  (Didn't ride with this one myself)
GIVI D303ST  (Tested in Motorrad on the CBF, although there they did not take extensions in account)
https://www.motorradonline.de/zubehoer/produkttest-verkleidungsscheiben-fuer-honda-cbf-1000-und-suzuki-gsx-r-1000-k7-k8/

#4

Online knapdog

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Re: Wind screen extension
Reply #4 on: 21 April, 2021, 10:59:34 AM
Screen extensions?
Awful things.
Bits of plastic stuck on the top. Makes me feel ill just thinking about them.
I don't have any problem with my Puig Touring screen whatsoever, plus the old tap washer trick.
Stay between the hedges!

#5

Offline MohKraats

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Re: Wind screen extension
Reply #5 on: 21 April, 2021, 11:33:57 AM
Hello Knapdog,

You are right,
It looks awful.
I agree there.
But, you know, in this case, Function goes before form
Well, at least for those that make miles on their bike, that is.

I know, there are enough bikers that turn their bike into a form of art.
Polish them whole day.
And, I must say, its a pleasure to look at those bikes.
And one won't find such thing like an extension on there.

But that's not me
My bike ain't clean, and ain't beautiful,
but the ride must be pleasurable, otherwise the bike goes.

Ah, and there is a way to have the best of both worlds .....
One could make one or more openings in de screen itself.
generating the extension effect without having one.
Last Edit: 21 April, 2021, 11:35:02 AM by MohKraats

#6

Offline MohKraats

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Re: Wind screen extension
Reply #6 on: 01 May, 2021, 03:34:20 PM
*Originally Posted by MohKraats [+]
Ah, some detail I forgot about:

The GIVI screen in question is a:
GIVI D320ST

For the CBF MK1 that would be:  (Didn't ride with this one myself)
GIVI D303ST  (Tested in Motorrad on the CBF, although there they did not take extensions in account)
https://www.motorradonline.de/zubehoer/produkttest-verkleidungsscheiben-fuer-honda-cbf-1000-und-suzuki-gsx-r-1000-k7-k8/

Update:
I dropped the GIVI screen.
It is just to floppy for me, since I use it with an extension as well.

Greez,
Moh

#7

Offline greybeard 2

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Re: Wind screen extension
Reply #7 on: 02 May, 2021, 09:13:21 AM
HI Being long backed and sitting tall I fitted some bars from a Deauville ,just get away with cables hoses etc with untying/unclipping. As for a screen I fitted the palmer products bracket and after looking at other bikes at the local bike meets, decided on a screen for a BMW1300gt ,contacted SlipSceens who advertised on Flea bay who supplied one undrilled. It gives me the height I need and also has the length to cover the screen adjustment slots on a mk 2
grey beard

#8

Offline MohKraats

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Re: Wind screen extension
Reply #8 on: 02 May, 2021, 01:46:03 PM
*Originally Posted by greybeard 2 [+]
HI Being long backed and sitting tall I fitted some bars from a Deauville ,just get away with cables hoses etc with untying/unclipping. As for a screen I fitted the palmer products bracket and after looking at other bikes at the local bike meets, decided on a screen for a BMW1300gt ,contacted SlipSceens who advertised on Flea bay who supplied one undrilled. It gives me the height I need and also has the length to cover the screen adjustment slots on a mk 2

Uhm,
Just wondering...
Screen extension ???

 


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