there's a fair bit of air coming from the gap between the bars and the tank.

not so much between the bars and the clocks.

Well testing with a high front fender proved not a lot really. So I then tried a wind jammer of sorts. Mounted at the towing eye, again no real difference. so next is to try the type shown on the greek forum.:seasaw:

Have you tried the 'Scottnet Clutch Test' ?

Motorway, 70mph, pull the clutch.

Does your problem go away?




Nick.

Spot on Zou
The tenere is unrideable with my Arai Tour X, with a normal full face road helmet no problem. There is a lot of wind being forced upwards through the gap between the bars and tank; I think this is catching the peak on my tour x and causing it to oscillate so much it makes me dizzy....dangerous.
I'm planning to try blocking the hole with an old sweater to see if it makes a difference....will report back on this soon

NickW909 has made a small but effective mod to his Tour-x which is a small metal wire bonded to the underside of the peak to stiffen it. what about trying that? i'm sure Nick could post a pic of it if we asked nicely :047:

or alternatively remove the peak?

Pete.

Here's the peak mod:

http://i295.photobucket.com/albums/m...9/IMGP4906.jpg


I roughend the surfaces of the rod and the peak and used superglue.


Nick.

I do not notice the vibration from my Tour X3.

It's really bad on my tour x!!! So much that it shakes my head! holding the peak with my left hand cures the problem, but obviously can't ride like that. Plan to experiment tomorrow on how to fix the problem.....

Found an Old helmet at my Parents house so gave it a try much better than my current lid so will stick with that.

Also tried the scottnet clutch test, which does reduce thumping but I think there is still some turbulance there that can be improved.

Can anyone send me a 2D drawing with the sizes on to make the wind stopper, this could save me some time with cutting and measuring.

Its silly windy today so no point testing as the wind swirls from all directions and pushes me across the road.

Back to my indoor hobby of designing a small teardrop caravan/mobile warm tent to tow behind the mini.

dommeick did the sweater trick work ?#

Spot on Zou
The tenere is unrideable with my Arai Tour X, with a normal full face road helmet no problem. There is a lot of wind being forced upwards through the gap between the bars and tank; I think this is catching the peak on my tour x and causing it to oscillate so much it makes me dizzy....dangerous.
I'm planning to try blocking the hole with an old sweater to see if it makes a difference....will report back on this soon :sbike:

I agree with the comments regards the Tour-X it is really bad so I have gone back to using a normal Full Face helmet which is much better.

Out tonight on the Ten and used a sweater to block the gap between the handlebars and the forks. It works!!!! No wind being forced up through the gap and no turbulence. Put the sweater in the topbox and turbulence back again. Using my hand to increase temporarily increase the height of the screen made no difference so the mod talked about by NickW may well be the best solution here and I may also try the weight on the peak of my Tour X. The strange thing was, on the way home for a short period, the turbulence dissapeared for a while......not sure why but it did return later!!!
Standing up on the foot pegs at 70mph, in the full blast of the wind there is no turbulence and no noise...perfect!! but impossible and dangerous to ride like that.

Hi i'm a nubie to riding really.. so excuse my ignorance.. :101: I think turbulance is a hard thing to understand.. I hired a bandit for a weekend and rode with my tour-x(which seems very noisey over about 60-70MPH). The strange thing was that even with my chin down and forehead forward my helmet seemed to want to lift off my head. some how the screen on the bandit must have created a low pressure system over my head... hmm not sure about that!? i'm very interested in this idea though as i had wondered if air was being chanelled through the fork gap on my tenere..and/or the angle of the peak.. I'm going to follow this topic closely...

Gory of the G

Hey Gory, I think what you experienced was quite different to the turbulence on the Tenere. The bandit will have flowed the air below your helmet so the sensation you had was the wind getting under your peak and trying to pull the helmet up.

the air flow over your head is faster than below.
The result is a preasure difference.
Thats the same a wing of an airplane works.
But you are not fast enough ;)

OK, here's the dimensions I used for the Windstopper.

I currently have slots in mine to let a little air though, but I think the holes will work better.

Hope it helps:

http://i295.photobucket.com/albums/m.../forkguard.jpg

Does this stop the flies getting blasted up into yer lid, yesterday was like a bug party and all their fly friends were invited.

Funny, when I had my loan Fazer when having my 12k mile service I seemed to get more bugs on my visor in one day than I seem to get in the last 6 months. Fazer screen gives nice and smooth air flow ... straight into your face. Tenere is more turbulent but at least blows the bugs to the top of your visor (I'm 6' 0").

It does get covered in bugs so might stop a few ending up in your lid, but I guess most of them will be coming over/around the screen.....



Nick.

Looked at my mates Honda Dominator 650 89-model on Saturday and it had a turbulence stopper in the fork gap. Came as a standard fitment so is probably there for a reason. I think Yamaha should have a look at it and put it as standard on all Tenere's.

dam and blast cant see the photos at work will have to wait till later for the dimensions as I wanted to try and mock one up before a blast to France on Thursday

interesting topic this, as since getting the Ten I have suspected the air through the yokes has been a major factor in the turbulance.
My rough idea (although not completely thought through yet) is to use neoprene like a wet suit stretched to form the aperture and secured in some fashion to the bike , with slots for the fork legs to rotate:118:.

just a note:

I had a Arai Tour X2.
Following a fall, I changed it for a Tour X3, and most of the turbulences on my VFR have disapeared. (I had a MRA touring screen on the VFR)

I've read here and there that there is a noticeable difference between the 2 helmets due to a revised peak.

I suffer from no turbulence on the Tenere with my Tour X3, I'm 6'2.

In case it isn't picked up here, there was a bit of interesting info in another "General Discussion" thread about the purpose of the 'beak' on a BMW GS. While most said it's more for cosmetic reason, one said it actually helped on the airflow on the front to direct to the radiator. Then I thought, for those who experience turbulence etc. on the Tenere, would it help by having a high front fender that wouldn't block the airflow to the radiator? Just a thought.

the Final Fix: the WindCOMB�!!!
 

Gentlemen,

I'm proud to present to you the final fix for the turbulence-problem: the amazing WindCOMB!!!�!!

I took a piece of birdcomb:

http://www.mijnalbum.nl/Foto650-JQ4PCKID.jpg

which is meant to be used underneath a roofing to prevent birds to build their nest underneath...

... cut two pieces at a certain length... and sticked these against the tank around the front fork like this:

http://www.mijnalbum.nl/Foto650-ZLCMVMIB-1.jpg

http://www.mijnalbum.nl/Foto650-AXKWRIWV.jpg

http://www.mijnalbum.nl/Foto650-7XEO86MH.jpg

http://www.mijnalbum.nl/Foto650-H6P8WFP4.jpg

Then I went for a testride..... hmmm. I could notice a difference but not that much.

Then I moved the comb to the top of the 'tunnel':

http://www.mijnalbum.nl/Foto650-CXTOJATU.jpg

http://www.mijnalbum.nl/Foto650-S6FXDLHJ.jpg

http://www.mijnalbum.nl/Foto650-TMKY3L4W.jpg

.... THAT DOES THE TRICK!

Can't get it any better! Not with this fairing and windshield! The gust from beneath is gone! No more buffeting to the chest or underneath the chin of your helmet. If you put your hand above the WindCOMB�, you'll still notice some airflow, but not even half as much as it used to be.

The bawling/roaring is gone!!

Its Amazing!

You can order directly at any D.I.Y.Shop!!

HJ

Nice one!

That's along the lines of what I was going to try (if I ever get my Tenere back). The solution seems to be to modify the wind flow through the "tunnels" rather than block it.

Al.

Seems like an excellent diy mod! :rockwoot:

Dare I ask what you stuck the comb on with as it's obviosly removable?

Looks like I might be making a quick stop at a local diy superstore on may way home today to see if this really does work.

double sided tape....

.... not sure it will hold at top speed though... maybe need some tougher glue to keep it at place.

Where to buy in the UK? Click => Bird-comb then go for 'Nearest stockist'

Tooth length is 55mm

HJ

this is what we sell at builders merchants. called bird comb and is designed to stop birds(feathered ones) getting under your tiles on your house roof.

This has been by 'HOLY GRAIL' since riding this bike and i've finally sorted it.
With my new high powerbronze screen and also used a piece of pre-formed angle plastic . in this case a short piece of a 'felt eave support tray' available from your builders or roof merchant and in this case i chopped and carved up a UBBINK one due to the grey matching other pieces on the bike. drilled 2 holes and fitted to crossbrace.


http://www.flickr.com/photos/39788003@N06/3654492369/

did 90mph on first test ride and not a head wobble or double vision at all at all. !!!!!

YIPPEE at last i can go to the Alps in comfort.

http://www.flickr.com/photos/39788003@N06/3654492369/

Guys

I contacted Yamaha UK and below is the response i received about the turbulence problem,


For the Attention of Jim Webb

Thank you for your email regarding your Yamaha XT660Z Tenere, the details
of which have been noted and placed on file.

We have referred your comments to our technical staff, who have advised
that they are unaware of any undue concerns with this area of the XT660Z
model, in general.

May we advise that as the official Importer and Distributor of Yamaha motor
products in the UK, we are involved in neither design nor manufacturing
issues. However, customer comments and feedback such as your own, are on
occasion passed to the factory for their consideration and reference.

Naturally we are pleased to hear that you are generally happy with your
Yamaha XT660Z Tenere and thank you for contacting us.

Regards,

Don Manley
Service Department
After Sales Division
__________________________________________________ ______


Y A M A H A M O T O R ( U K ) L T D


Sopwith Drive
Brooklands
Weybridge
Surrey KT13 0UZ



Telephone: +44 (0) 1932 358000
Fax: +44 (0) 1932 358024
E-mail: service@yamaha-motor.co.uk
Website: www.yamaha-motor.co.uk



Dear sir / madam

I am possibly not contacting the right branch of yamaha but perhaps you
could pass on my message to the relevant person.

I have recently purchased a new Tenere and am very happy with the bike,
there is one very big problem that has become
apparent on not only my own but other members of the group XT660.com.

When the tenere reaches 60 MPH the turbulence coming up from the front
forks and into the tank and dash area causes a big problem
it shakes your head most uncomfortably. some of the guys have resorted to
using Bird comb in the tunnel to stop this. Perhaps Yamaha
should take a look at this issue to make a great bike a lot better.

Thanks and regards

Jim webb
Jp webb

i can truely say i nealy did the bird comb trick but went for the option i posted earlier which was far easier and doesnt alter the bike paint in any way.

this totally re-directs the wind onto your chest.

http://www.flickr.com/photos/39788003@N06/3654492369/

i was over the moon when fitted this and worked.
i do hope others try and have same success
will try with a std screen in next few days .

The idea is good... but...

it might interfere with a tankbag or roadbookholder...

I'll stick to the magic WindCOMB™

HJ

I can also confirm that the WindCOMB thing works fine.
The only modification to SingleMindded’s installation is that I used the Dual Lock tape from 3M , in order to stick the WindCOMB to the tank.
You can find the hole story here (mid of the page) : http://www.moto.gr/forums/showthread...&pagenumber=41

Its in Greek, but the pics speak for them selves.

Greeds

@SingleMindded..... thank you very much for the idea man .......

I have to tell you that when my givi sat nav bag is fitted to the handlebar crossbar I get much less buffeting. Hardly noticable and not worth complaining about. I think I will leave it fitted full time. I am also using a Tour X3 Arai and its fine.

sore head
 

hello folks,
First time with tenere and single come from vfr 800 fi.
Travelling 600 miles every weekend from liverpool as working down in feilixstowe. turblance seems to be worse on dual carraigeways A14 than M6 must be due to airflow across wider areas. will be trying bent fibreglass on crossbar as spending weekend with sore head. good for cruising up to 80mph, (numbness occurs at speeds above this) and throwing round bends, but tyres need to be warm, bit hard for my liking.

hi aidan
i was gettinng same troubles and since fitted the powerbronze screen and the piece of plastic on crossbar - now nothing of any concern.
still not tried the std screen back on tho yet.
happy motoring

sore head sorted a bit
 

well i added a piece of perspex to the crossbar on the bike and it made such a good difference. it has stopped the wind hitting me on the throat and chin of the helmet. i will probably tell better on the way home friday as the roads are busier and more turblance. this was a quick botch job nothing fancy. have got photos but can't find how to put them on?? can anyone help please?
need bigger screen now as top of helmet getting battered. fancy an mra but they don't do them yet.

as other people have suggested on here i went with the powerbronze screen that i believe is also the same as a metal mule screen and seems to work fine together.
if anyone would like a piece of this shaped plastic i used give us a shout or email and i can mail out in a weeks time or so as going to the french alps to watch some of the tour de france.