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Tiger Time => Girly Talk (1999 - 2006 Tigers) => Topic started by: ChillMan on July 31, 2015, 08:43:12 PM

Title: hurtful noise probably due to windscreen turbulence
Post by: ChillMan on July 31, 2015, 08:43:12 PM
Hello,

As you might know by now, I have a Tiger 955i '01. :wheel

When driving there's much noise. Especially if I drive a lot for a week, there are tiny hearing issues. I absolutely want to avoid TINNITUS. I love riding but getting tinnitus is NOT WORTH IT.

I was sure it was my helmet. It can still be PART of the problem but... my friend suggested it might be turbulence from the windscreen too.

I started standing up on the bike at various speeds, 70km/h or 100km/h (still great balance btw) - and 99% of the annoying heavy low frequency noise just disappeared! Remained a whisper and gentle whistle from the wind against the helmet. Sweet. 10x better at least. (Plus wind against my chest cooling me down. :))

There's probably another windscreen fitting my 184cm height, with less turbulence? Either a lower one, or a higher one?

There's a low "sport" Triumph screen. Good?

A quick check on Ebay and I found some screens that you seem to attach to the existing screen, like MRA X-CREEN SPOILER, and MRA Variotouringscreen VT. Good?
Title: Re: hurtful noise probably due to windscreen turbulence
Post by: motoOzarks on July 31, 2015, 08:51:43 PM
ear plugs
Title: Re: hurtful noise probably due to windscreen turbulence
Post by: ChillMan on July 31, 2015, 08:57:46 PM
Always use.
Title: Re: hurtful noise probably due to windscreen turbulence
Post by: Mustang on July 31, 2015, 09:26:06 PM
take a ride without your mirrors ..........seriously  :nod
Title: Re: hurtful noise probably due to windscreen turbulence
Post by: ChillMan on July 31, 2015, 09:34:45 PM
That would be interesting! But in the long run dangerous, I use them constantly.
Title: Re: hurtful noise probably due to windscreen turbulence
Post by: Sin_Tiger on July 31, 2015, 11:27:34 PM
Just flip them in on a quiet bit of road, even that will be enough to give you a good idea.

Failing that, put a few washers (or anything else to create a gap) under each screw holding the screen, you might need longer screws. A lot of turbulence is caused by riding with a negative pressure zone behind the screen that is constantly being filled by the air rushing past your helmet in a reverse direction. If that does it consider a set of Plamer adjustable brackets.

I've verified this years and many bikes ago by taping bits of string around the edge of a screen (Not a Girly) and watched them while riding, I even put a ballon in the back of the screen to fill the space, looked bloody weird but it proved the point on that bike at least, everyone is different, just got to find what suits you. Don't go throwing lots of money at different screens and miracle cures until you know what the issue is.
Title: Re: hurtful noise probably due to windscreen turbulence
Post by: ChillMan on August 01, 2015, 09:12:17 PM
Yeah, that with mirrors I will do. Will be pretty interesting!

Didn't quite understand your idea with washers. Perhaps it allows air to flow below the screen onto the driver?

I just read this review http://www.adventurebikerider.com/section-blog/60-news/217-palmer-products-screen-reviewed.html. The total is £185 so about double compared to the €90 MRA stuff. Will look into it further.
Title: Re: hurtful noise probably due to windscreen turbulence
Post by: Bixxer Bob on August 01, 2015, 09:30:51 PM
Not sure about your version, but the later Girlies had a channel under the screen that allows the air through.
Title: Re: hurtful noise probably due to windscreen turbulence
Post by: Sin_Tiger on August 01, 2015, 09:42:28 PM
Quote from: ChillMan on August 01, 2015, 09:12:17 PM
Didn't quite understand your idea with washers. Perhaps it allows air to flow below the screen onto the driver?

The total is £185 so about double compared to the €90 MRA stuff. Will look into it further.
:iagree as Mustang says, best start with your mirrors, minimum effort and no cost.

Yes that's the idea with the washers / spacers. The Palmer price has gone up by about £10 since I last looked at them but I think you can use the stock screen on the brackets.
Title: Re: hurtful noise probably due to windscreen turbulence
Post by: robxxxx on August 02, 2015, 12:45:03 AM
You need to search of some of the older posts. But my advice would be to buy a Palmer screen and brackets and end your problem now.
Title: Re: hurtful noise probably due to windscreen turbulence
Post by: ChillMan on August 04, 2015, 10:52:36 AM
We already know that when I stand up, I have no issues, then it's just pure speed wind on my helmet.

Yesterday while driving 110-120km/h I tried bending forward like on a sports bike, thereby sinking my head. I also tried bending my whole back to sink my head straight down. Somewhere in between the two was probably the best, but either way, in all these cases the head was straight behind the screen, and voila - most of the loud noise was significantly reduced to a very acceptable level.

When I sit normal (I am 184cm tall), the edge of the screen probably creates massive turbulence that goes straight to my head. So perhaps just having a much shorter screen could work. (Or none, but it'd be rather ugly. :))

Bixxer Bob,
Yes, there is a small gap/channel that air passes through also on my '01.
Title: Re: hurtful noise probably due to windscreen turbulence
Post by: Bixxer Bob on August 04, 2015, 01:28:51 PM
Good to know.  I fitted a taller screen which worked for me.  Not perfect but ok.  That subject has been done to death several times already  :icon_wink:
Title: Re: hurtful noise probably due to windscreen turbulence
Post by: Mustang on August 04, 2015, 02:11:26 PM
Quote from: Bixxer Bob on August 04, 2015, 01:28:51 PM
That subject has been done to death several times already  :icon_wink:

:iagree

use search button and the term "windscreen" or "wind screen" either one will bring up shitloads of posts about it or the for sale posts of failed attempts at nirvana .......................... :thumbsup
Title: Re: hurtful noise probably due to windscreen turbulence
Post by: Chris Canning on August 04, 2015, 05:20:19 PM
First time I saw a Palmer screen I thought it was an april the first spoof  :icon_eek: but anyone interested in such there's one on UK ebay.
Title: Re: hurtful noise probably due to windscreen turbulence
Post by: ChillMan on August 11, 2015, 08:38:06 PM
This Sunday I went on a 430km(!) tour with a friend. He has another bike (brand new KTM Adventure) but when he tried mine he quickly confirmed that bad turbulence is the culprit. Standing up or leaning behind the screen both removed it.

I did search several times, but could find no conclusion except that people have problem with it and try all kinds of remedy. :)

Next time, screen off!
Title: Re: hurtful noise probably due to windscreen turbulence
Post by: mat-tiger1 on August 12, 2015, 01:04:49 AM
Strangely enough I had more turbulence trouble with the original 'short' screen. :icon_scratch:

I had a taller aftermarket one with the bike which made a world of difference.  :thumbsup

Like Sin said, everyone is different, what suits one doesn't necessarily suit another!  :^_^
Title: Re: hurtful noise probably due to windscreen turbulence
Post by: Bixxer Bob on August 12, 2015, 10:05:52 AM
I have a tall screen, minimal turbulence and although irrelevant,  I think it looks better than the stubby original.
Title: Re: hurtful noise probably due to windscreen turbulence
Post by: Chris Canning on August 12, 2015, 03:42:41 PM
Quote from: mat-tiger1 on August 12, 2015, 01:04:49 AM

Like Sin said, everyone is different, what suits one doesn't necessarily suit another!  :^_^

Don't ya just love a screen thread  :icon_wink: stock screen?? I absolutely love e'm when they turn up on ebay new unused I'm your man  :icon_biggrin:

Barcelona/Birmingham in 16 hours and that includes the cross channel ferry,Florence/Birmingham out the hotel 6am both days and back home the second day at 2pm and 4/600 mile days god knows how many we have done,biggest hassle I've had is changing crash helmets because as I found out they don't all work the same.

(http://i64.photobucket.com/albums/h185/wing2541/Florence2012016.jpg) (http://s64.photobucket.com/user/wing2541/media/Florence2012016.jpg.html)


Title: Re: hurtful noise probably due to windscreen turbulence
Post by: supercoupe1993 on August 12, 2015, 04:03:45 PM
Just because, i havent chimed in yet......
I run the palmer brackets. My reasoning is 2 fold.
1) I can run any screen i want. Currently i have a used screen from an old sidecsr rig. My buddy is running a slipstreamer scooter shield on his Palmer brackets. You can drill 4 holes in any screen and run it. Then you can truely customize..... I have yet to pay for a windscreen for my tiger!!(i guess i should have said that i  am cheap, guess you all have figured it out)
2) My lastname is Palmer, its kind of a no brainer!!

Chris Palmer
2000 Tiger
Title: Re: hurtful noise probably due to windscreen turbulence
Post by: ChillMan on August 17, 2015, 01:50:02 AM
Today I first went for a 2h ride, saw some horses and cows and farms and what not. Very nice. I got home (city center) and was a bit exhausted but I took off the screen and went out again on the now "naked" bike.

Wow. Everything seemed to improve. Any feeling of exhaustion was just gone, and I wanted to go more, more, mooore...  Wow.

* Hurtful noise at 70km/h and above was just gone. Completely.

* At all speeds, I felt the speed more, in the good way.

* I felt the nuances much more subtly, like any small acceleration now had a corresponding increase of speed wind. I did in that sense immediately become a better driver, feeing the bike more, feeling the balance and so on.

* In general I felt I was going faster, and oddly enough it made me go even faster still...

What a difference! The "woo hoo" feeling is back!  :wheel

BTW, I noticed when I took the screen off that mine is GIVI. Oh and BTW, the bike is pretty ugly without any screen but...
Title: Re: hurtful noise probably due to windscreen turbulence
Post by: JoeDirt on August 17, 2015, 03:52:10 AM
Hey Chili,

I have one of those MRA windscreens with deflector on the top. I don't care what the other guys think... I think they look badass. I don't have any buffeting issues and the one I have looks like the one below.

A seller in Germany is selling these on eBay. I searched for "MRA Verkleidungsscheibe Variotouringscreen".

http://www.ebay.com/itm/MRA-Verkleidungsscheibe-Variotouringscreen-farblos-TIGER-955-I-02-T709-709EN-/311374509749?hash=item487f5df6b5 (http://www.ebay.com/itm/MRA-Verkleidungsscheibe-Variotouringscreen-farblos-TIGER-955-I-02-T709-709EN-/311374509749?hash=item487f5df6b5)

Title: Re: hurtful noise probably due to windscreen turbulence
Post by: Dutch on August 17, 2015, 01:02:04 PM
They can be bought a most bike shops. I have a Puig version. Disadvantage is that adjustability is in big steps, the MRA might have smaller steps. Didn't like it much on the stock screen nor on the cut down screen. I am 1.83 m (6") and have an Arai helmet. Which is a great helmet but not really silent. Of course I always wear ear plugs.

The buffeting with a regular or higher screen is the problem. Maybe I have to test the mirrors as well, I hear that with some bikes the mirrors are indeed a big issue. Same as you TS found that no screen at all works best. But looks crap. My best solution so far: cut down screen and the gap between fairing and screen closed with an old sponge. Looking for a Triumph sports screen but have not found one for a reasonable price.

A really high and wider screen like the Cee Bailey (Marc had one with MRA spoiler on top of it) might work as well. IMHO with screens they have to be either low so the helmet is in a clean air flow, or really high & wide so the helmet sits in a quiet pocket. But as you could read this is very, very personal.

The cut down oem screen:
(http://www.motorbazaar.nl/diversen/tiger20131.jpg)
Title: Re: hurtful noise probably due to windscreen turbulence
Post by: ChillMan on August 17, 2015, 05:12:50 PM
I am approx same height 184cm.
I searched online and found one type of sports screen here
http://www.squaredeals-ltd.co.uk/tiger-955i-sports-screens-flip---standard-3683-p.asp
but unfortunately it lacks photos and a detailed description. Someone I met told me that that shop was good, so perhaps it's worth a shot?

Might be worth trying to cut the GIVI screen off but with my skills it'd take a whole weekend and still not look pretty. :D
Title: Re: hurtful noise probably due to windscreen turbulence
Post by: Dutch on August 17, 2015, 05:56:37 PM
With a power jigsaw it's a matter of minutes. Stick masking tape over the screen where you want to cut and go ahead. Go with a little first, its easier to cut off a strip then it is to cut on a piece  :icon_wink:

I was lucky I found a guy who was selling both a flip-up and a (slightly damaged) oem screen. The higher doesn't do it for me, same turbulance  :icon_sad:   The other one had a one night stand with the jigsaw and now has a fairly stable relation with the Tiger   :love10
Title: Re: hurtful noise probably due to windscreen turbulence
Post by: ChillMan on August 17, 2015, 06:25:14 PM
Actually I think the "sport" screens of the link I sent might simply be standard size screens.

Screen is just plastic so even a manual saw might probably do. I have one that I used to cut some copper pipes. Then sandpaper the edges and done?

Straight cut or curved?

I didn't quite understand that about an old sponge.
Title: Re: hurtful noise probably due to windscreen turbulence
Post by: John Stenhouse on August 17, 2015, 10:49:05 PM
The sponge is to close the air gap at the bottom of the screen where it joins the nose fairing. That's the problem really, that gap is either too small or too large. Most of the effective after market screens make that gap bigger allowing more air through and hence reduce the turbulence behind the screen. Closing that gap in some circumstances can improve the situation. One solution is too always ride with a tank bag as it breaks up the big gap between the rider and the screen and reduces the space for the air to tumble in.
Title: Re: hurtful noise probably due to windscreen turbulence
Post by: ChillMan on August 18, 2015, 12:30:32 AM
Thanks, that explains it.

I actually have looked around for a tank bag (or top box). I bought a 2-helmet top box some months ago but its plate under was too big, so I returned it.

Since my screen (Givi) is off right now away, I today cleaned and polished it (it was in awful condition, previous owner probably wiped it off with sandpaper :-)). The result looks great. Photo:


Title: hurtful noise probably due to windscreen turbulence
Post by: Toster on August 19, 2015, 08:21:39 AM
What did you use for cleaning and polishing? The end effect looks great.
Title: Re: hurtful noise probably due to windscreen turbulence
Post by: ChillMan on August 19, 2015, 11:39:33 AM
Clean: Regular "YES" hand wish washing liquid, gently whiping with hands, no brush, cloth etc. (EDIT: I think it might be "Fairy" in the UK.)

Polish: Wood furniture polish with old bed linen cloth.  I think the main effect is adding a thin layer of chemical that makes the scratches not be visible. I bet that the scratches are still there if I clean it completely again.

I thought I had copper or silver polish at home but didn't find it so...
Title: Re: hurtful noise probably due to windscreen turbulence
Post by: Sin_Tiger on August 19, 2015, 02:02:49 PM
Quote from: ChillMan on August 19, 2015, 11:39:33 AM
Polish: Wood furniture polish with old bed linen cloth.  I think the main effect is adding a thin layer of chemical that makes the scratches not be visible. I bet that the scratches are still there if I clean it completely again.

:iagree silicone wax furniture polish works well but only lasts so long, works for visors and helmets too. Try to find either "Plexus" plastic polish or "Mr. Sheen" wax furniture polish (by smell, feel and results I think they are very close to each other) if they have those brands where you live.
Title: Re: hurtful noise probably due to windscreen turbulence
Post by: ChillMan on August 19, 2015, 10:09:19 PM
Since you mention silicone I want to just mention that according to the bottle it "contains natural oils, no silicone". Either way, it doesn't seem to contain particles that would polish - in the way we want to have for scratched/matte plastic surfaces... at least that is what I THINK we want to have.
Title: Re: hurtful noise probably due to windscreen turbulence
Post by: ChillMan on August 20, 2015, 01:39:44 AM
Tooth paste might be good BTW. Or whichever chrome polisher you use for your exhaust pipe, yeah?
Title: Re: hurtful noise probably due to windscreen turbulence
Post by: ChillMan on August 29, 2015, 06:15:01 PM
I am still driving with the windscreen off!

I've taken out a saw and sandpaper. Will cut it, but after trying the "gap" idea.

I got some longer screws (and nuts as distancers) - but it had the wrong diameter, less than 1mm too small so maybe it's one of those measured in inches.

About tank bag: which is your favorite to reduce turbulence?
Title: Re: hurtful noise probably due to windscreen turbulence
Post by: ChillMan on September 06, 2015, 03:22:16 PM
a)
Windscreen is now sawed off, the black rubber is glued on the top, and it is mounted on the bike. It looks pretty cool. See photo. I did this change late on Friday, and didn't try it until the next day, when I went on a long tour with some friends. The result is: some reduced turbulence but not much reduced. It hits lower than before, it feels like. The wind protection when I lean forward is of course almost gone.

b)
I put a sponge in the "hole" but it made no difference.

c)
I borrowed my friend's backpack which is designed for biking, and turbulence was surprisingly reduced.

d)
Nothing beats driving around naked! :icon_mrgreen:
Title: Re: hurtful noise probably due to windscreen turbulence
Post by: ChillMan on September 13, 2015, 02:27:30 AM
Today was windy so there was some "wind disturbance"... but my brand new aerodynamic motorbike backpack seems to reduce turbulence noticably. I don't get that effect with my regular backpack.

Not affiliated in any way but I would like to show the shape of it:
http://pierce.imgix.net/ProdImages/prod_54380/p54380.jpg?q=60&sharp=40&h=640
Title: Re: hurtful noise probably due to windscreen turbulence
Post by: motoOzarks on September 13, 2015, 02:43:59 AM
Down in the tuck position are you?

Title: Re: hurtful noise probably due to windscreen turbulence
Post by: ChillMan on September 13, 2015, 02:47:39 AM
Maybe, maybe not. :)
You need to explain what that means.
Title: Re: hurtful noise probably due to windscreen turbulence
Post by: motoOzarks on September 13, 2015, 03:05:43 AM
Meaning in order for that pack to be aerodynamic you would need to be lying on the tank like a sport bike.

Title: Re: hurtful noise probably due to windscreen turbulence
Post by: ChillMan on September 13, 2015, 03:10:29 AM
Oh gotcha. Nope.

I use an upright riding position - and the turbulence is reduced.
Title: Re: hurtful noise probably due to windscreen turbulence
Post by: motoOzarks on September 13, 2015, 03:19:54 AM
Quote from: ChillMan on September 13, 2015, 03:10:29 AM
Oh gotcha. Nope.

I use an uptight riding position - and the turbulence is reduced.

fixed

just making sure you fit in around here
Title: Re: hurtful noise probably due to windscreen turbulence
Post by: pxm on September 21, 2015, 06:04:24 PM
Quote from: robxxxx on August 02, 2015, 12:45:03 AM
You need to search of some of the older posts. But my advice would be to buy a Palmer screen and brackets and end your problem now.
Agreed 100%
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