Wind Screen Cat's Eyes

[SATrident]

Hello all,

I'm going to get a new windscreen for my 96 BBB and am considering having Cat's Eye vents cut into it.

I'd like some feedback from anyone else who has either done the same or considered it.

Has anyone else done the same and if so would you do it again.

What advantages or dis-advantages have you found.

I'm thinking about having a screen 580 - 600mm in length as the wind noise coming from the OEM screen is giving me the proverbials.

Regards
Mark F  
South Austraalia

[William Smith-10]

Mark,

 

I have a Clear View replacement screen on my 96 Trophy 900 with 2 vents cut
into it.  At first I thought I would feel the air coming through the vents
at me but this isn’t the case.  I don’t feel anything from them behind the
windshield.  I think your cat’s eye cuts will most likely be fine.

 

Bill

 

 

From: TriumphTrophy@... [mailto:TriumphTrophy@...]
On Behalf Of fennells123
Sent: Wednesday, November 04, 2009 7:20 PM
To: TriumphTrophy@...
Subject: [TriumphTrophy] Wind Screen Cat's Eyes

 

 

Hello all,

I'm going to get a new windscreen for my 96 BBB and am considering having
Cat's Eye vents cut into it.

I'd like some feedback from anyone else who has either done the same or
considered it.

Has anyone else done the same and if so would you do it again.

What advantages or dis-advantages have you found.

I'm thinking about having a screen 580 - 600mm in length as the wind noise
coming from the OEM screen is giving me the proverbials.

Regards
Mark F
South Austraalia





[Non-text portions of this message have been removed]

[brillooo]

 
In a message dated 11/4/2009 4:23:56 P.M. Pacific Standard Time,  
fenbake@... writes:

Hello  all,

I'm going to get a new windscreen for my 96 BBB and am considering  having
Cat's Eye vents cut into it.

I'd like some feedback from anyone  else who has either done the same or
considered  it.



Bad idea !  I had two cat eyes cut in mine and its a bad idea.   Trophys
have great wind and rain protection but cat eyes allow the water in big  time.
 Thank goodness for duct tape ... huh?
 
Arrggghhh.   My 03 sunset red 1200 bit the bullet Saturday in  Arkansas.  
Totalled the bike , removed the skin on my left forearm  and damaged my
right shoulder.  Will have to have surgery on the  shoulder.  I have a picture
of the my helmet.... and if you don't wear  helmets this will make a believer
out of you.  I frequently ride with the  chin guard flipped up but I had it
down and it saved my face, teeth, jaw, nose,  etc, etc.


[Non-text portions of this message have been removed]

[rickh1001]

--- In TriumphTrophy@..., "fennells123" <fenbake@...> wrote:

> I'm going to get a new windscreen for my 96 BBB and am considering having Cat's Eye vents cut into it.


Mark,

I had put the Clearview screen with "cat's eyes" on mine. The only thing it did was to let water in.  It did almost nothing to reduce turbulence and noise, which is the real problem with the Trophy windscreens.

To remove the turbulence, one needs to create a substantial flow underneath the airfoil.  On almost any modern bike, this is achieved by having a large vent at the base of the windscreen, so air can flow freely up the backside and meet up with the air on the front of the screen.  As many have found for the Trophy, the next best fix is to install a secondary panel (like the commercially available "Laminar Lip") near the top of windscreen, to reduce turbulence and smooth out the airflow and reduce the vacuum created behind the windscreen. I believe this effect is called a "Karmen Street" in aeronautics.  

So overall, my experience is that cat's eyes are not enough to accomplish this, and you are probably better off just designing a secondary screen near the top of the solid windscreen, set about an inch or so away.  

I probably went through 2-3 old windscreens I bought from other listers, and I even tried cutting very large openings at the base of the screen.  Nothing really worked, except for the secondary screen installed at the top of the existing windscreen.

Except for the aerodynamics of the windscreen, which has been the bane of the Trophy since its inception (and thus the upper fairing re-design in 99 - which didn't solve it) there is very little else to fault on the bike (and the seat, which is a universal complaint with every bike) as a superb touring and sport-touring machine.  

Rick Hartwick
00 Trophy 900

[buddytd_2000]

I originally purchased a Clearview with cat's eyes, and didn't care much for it in Oregon. I ride year around, and the water was annoying. I sent it back and got one with a Honda SE-style vent which opens and closes. Works great.

Regarding wind, I didn't mind the wind coming in through the eyes, just the fact they were open all the time.

Bud Izen
Turner Oregon

'99 Platinum 900

[Non-text portions of this message have been removed]

[SATrident]

Hi,

Thanks and

Hope you get back to full health soon.

Mark F

--- In TriumphTrophy@..., brillooo@... wrote:

>
>  
> In a message dated 11/4/2009 4:23:56 P.M. Pacific Standard Time,  
> fenbake@... writes:
>
> Hello  all,
>
> I'm going to get a new windscreen for my 96 BBB and am considering  having
> Cat's Eye vents cut into it.
>
> I'd like some feedback from anyone  else who has either done the same or
> considered  it.
>
>
>
> Bad idea !  I had two cat eyes cut in mine and its a bad idea.   Trophys
> have great wind and rain protection but cat eyes allow the water in big  time.
>  Thank goodness for duct tape ... huh?
>  
> Arrggghhh.   My 03 sunset red 1200 bit the bullet Saturday in  Arkansas.  
> Totalled the bike , removed the skin on my left forearm  and damaged my
> right shoulder.  Will have to have surgery on the  shoulder.  I have a picture
> of the my helmet.... and if you don't wear  helmets this will make a believer
> out of you.  I frequently ride with the  chin guard flipped up but I had it
> down and it saved my face, teeth, jaw, nose,  etc, etc.
>
>
> [Non-text portions of this message have been removed]
>

[Poppa Jack]

Say fellas,
   I'm not sure just what "cats eyes are? Are they  for letting a  
breeze into the cockpit?
  Poppa
On Nov 4, 2009, at 6:21 PM, fennells123 wrote:

> Hi,
>
> Thanks and
>
> Hope you get back to full health soon.
>
> Mark F
>
> --- In TriumphTrophy@..., brillooo@... wrote:
> >
> >
> > In a message dated 11/4/2009 4:23:56 P.M. Pacific Standard Time,
> > fenbake@... writes:
> >
> > Hello all,
> >
> > I'm going to get a new windscreen for my 96 BBB and am  
> considering having
> > Cat's Eye vents cut into it.
> >
> > I'd like some feedback from anyone else who has either done the  
> same or
> > considered it.
> >
> >
> >
> > Bad idea ! I had two cat eyes cut in mine and its a bad idea.  
> Trophys
> > have great wind and rain protection but cat eyes allow the water  
> in big time.
> > Thank goodness for duct tape ... huh?
> >
> > Arrggghhh. My 03 sunset red 1200 bit the bullet Saturday in  
> Arkansas.
> > Totalled the bike , removed the skin on my left forearm and  
> damaged my
> > right shoulder. Will have to have surgery on the shoulder. I have  
> a picture
> > of the my helmet.... and if you don't wear helmets this will make  
> a believer
> > out of you. I frequently ride with the chin guard flipped up but  
> I had it
> > down and it saved my face, teeth, jaw, nose, etc, etc.
> >
> >
> > [Non-text portions of this message have been removed]
> >
>
>

[Non-text portions of this message have been removed]



------------------------------------

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[Ken Hastie]

> -----Original Message-----
> From: Jack Byers

>    I'm not sure just what "cats eyes are? Are they  for letting a
> breeze into the cockpit?

To relieve back pressure on the screen.

Mine do not let in water (apart from the odd dribble) so my experience is
different to other posters.

My screen does not make any wind noise - at all - and I find it hard to
accept that others say it does.

It is the airflow directed to the helmet which causes noise and turbulence.

My Clearview XL takes that airflow to the top of my helmet - so it is a very
quiet ride.

I have covered many thousands of miles in rain and wind and would not be
without my Clearview.

The stock Trophy screen created an airflow that was very uncomfortable.

Ken the Geordie  SST 13
BSA A75R, A10, B40, D10, Triumph Trophy 1200

[Robert-321]

How tall is your screen?

Bob Clark




On Nov 5, 2009, at 2:56 AM, "Ken Hastie" <ken@...> wrote:



> -----Original Message-----
> From: Jack Byers

> I'm not sure just what "cats eyes are? Are they for letting a
> breeze into the cockpit?

To relieve back pressure on the screen.

Mine do not let in water (apart from the odd dribble) so my experience is
different to other posters.

My screen does not make any wind noise - at all - and I find it hard to
accept that others say it does.

It is the airflow directed to the helmet which causes noise and turbulence.

My Clearview XL takes that airflow to the top of my helmet - so it is a very
quiet ride.

I have covered many thousands of miles in rain and wind and would not be
without my Clearview.

The stock Trophy screen created an airflow that was very uncomfortable.

Ken the Geordie SST 13
BSA A75R, A10, B40, D10, Triumph Trophy 1200




[Non-text portions of this message have been removed]

[Bownez]

Ken,

I am considering a Clearview XL, I am 6'2" in height. My I ask your height?
I'd like to get the correct size.

Thanks,

Bones in Mpls
2001 BBBB

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[rickh1001]

> Mine do not let in water (apart from the odd dribble) so my experience is
> different to other posters.
>
> My screen does not make any wind noise - at all - and I find it hard to
> accept that others say it does.
>

Ken,

I should clarify my earlier post on my experience with windscreens.  It always seemed to me there were two ways to go one the windscreens.  One is the barn door approach, which is to make the screen bigger, so the wind goes over the helmet.  The other is to keep the screen short, but to figure out some way to reduce the turbulence coming over the top.  The large Clearview definitely accomplishes the first.  I had one, and it was quiet, but didn't like it, as it produced air pressure on my back, and I always felt it was more sensitive to cross winds.  The shorter screens definitely produce a lot of noise and turbulence at helmet level.  The only solution I found for that was to use a secondary screen near the top of the existing screen to smooth out the flow and throw the air up higher.  So I would think the effectiveness of cat's eyes cut into the screen might depend on the size of the screen, and whether they are reducing any vacuum created.  

The ideal windscreen is definitely a personal decision, with no single best solution.  

Rick Hartwick
00 Trophy 900

[Ken Hastie]

> -----Original Message-----
> From: rick

> I should clarify my earlier post on my experience with
> windscreens.  It always seemed to me there were two ways to go
> one the windscreens.  One is the barn door approach, which is to
> make the screen bigger, so the wind goes over the helmet.

...and that is what works for me.  Also sends the northern British weather
over my head as well.

> other is to keep the screen short, but to figure out some way to
> reduce the turbulence coming over the top.  The large Clearview
> definitely accomplishes the first.  I had one, and it was quiet,
> but didn't like it, as it produced air pressure on my back, and I
> always felt it was more sensitive to cross winds.

That again is also interesting because I find exactly the opposite.  The
bigger screen makes the bike less susceptible to cross wind buffeting.  I
noticed the imporvement amost straight away.
Someone did once explain to me why that would happen but I can't remember
the explanation now.


> The ideal windscreen is definitely a personal decision, with no
> single best solution.

Based on all the replies I have read here over many years, I would agree.
The same applies to the seat; I have no problem with that either.

The one thing I think we are all agreed on is that bloody sight glass for
the oil level !

Ken the Geordie  SST 13
BSA A75R, A10, B40, D10, Triumph Trophy 1200

[Ken Hastie]

> -----Original Message-----
> From: bownez@...

> I am considering a Clearview XL, I am 6'2" in height. My I ask
> your height?
> I'd like to get the correct size.

I'm an inch shorter but quite long in the upper body, so probably the same
as you.

Clearview tend to recommend a size shorter than I think most people find
comfortable and remember you can always cut them down quite easily.

You can't make them taller !

Ken the Geordie  SST 13
BSA A75R, A10, B40, D10, Triumph Trophy 1200

[Ken Hastie]

I seem to remember it was 9 inches taller than stock.

Here is a photo of the two together on my 1200

http://f1.grp.yahoofs.com/v1/oBLzSm6HngMrFEO_8jPItQDMOajDwKWsPqfI4_CrfTAjSqWNfvJT_iuVeG6qWLbqF6G1yE9f_9Esbwe10LI/ALL_FAQ/clearxl.jpg

(You may have to copy and paste to get the full URL - or you can simply get to the FAQ file and click on windscreens)

Ken the Geordie  SST 13
BSA A75R, A10, B40, D10, Triumph Trophy 1200





> -----Original Message-----
> From: Bob Clark
>
> How tall is your screen?
>
> Bob Clark
 

[Robert-321]

-



The one thing I think we are all agreed on is that bloody sight glass for

the oil level !




And the bloody price of replacement Turn Signals!

 



 




Bob Clark
01 Sunset Red Trophy 1200
Jacksonville, FL / Augusta, GA


[Non-text portions of this message have been removed]

[Rod Gill]

Easy cure for turbulence. See files. Rods Aerofoil and Micks aerofoil. Want to ride at over a 100 mph with no turbulence and visor up or talk to you your passenger abt 50 or 60 mph?
Rod




________________________________
From: fennells123 <fenbake@...>
To: TriumphTrophy@...
Sent: Thu, 5 November, 2009 2:21:51
Subject: [TriumphTrophy] Re: Wind Screen Cat's Eyes

 
Hi,

Thanks and

Hope you get back to full health soon.

Mark F

--- In TriumphTrophy@ yahoogroups. com, brillooo@... wrote:

>
>
> In a message dated 11/4/2009 4:23:56 P.M. Pacific Standard Time,
> fenbake@... writes:
>
> Hello all,
>
> I'm going to get a new windscreen for my 96 BBB and am considering having
> Cat's Eye vents cut into it.
>
> I'd like some feedback from anyone else who has either done the same or
> considered it.
>
>
>
> Bad idea ! I had two cat eyes cut in mine and its a bad idea. Trophys
> have great wind and rain protection but cat eyes allow the water in big time.
> Thank goodness for duct tape ... huh?
>
> Arrggghhh. My 03 sunset red 1200 bit the bullet Saturday in Arkansas.
> Totalled the bike , removed the skin on my left forearm and damaged my
> right shoulder. Will have to have surgery on the shoulder. I have a picture
> of the my helmet.... and if you don't wear helmets this will make a believer
> out of you. I frequently ride with the chin guard flipped up but I had it
> down and it saved my face, teeth, jaw, nose, etc, etc.
>
>
> [Non-text portions of this message have been removed]
>

     

[Non-text portions of this message have been removed]

[brillooo]

 
In a message dated 11/5/2009 5:36:15 A.M. Pacific Standard Time,  
Bownez@... writes:

I am  considering a Clearview XL, I am 6'2" in height. My I ask your height?
I'd  like to get the correct size.

Thanks,

Bones in  Mpls



I'm 6'2" and am long waisted got the 3 inches  taller


[Non-text portions of this message have been removed]

[Jim-219]

Just a thought: I got my Clearview with the adjustable vent and I find that it allows me to vary the amount of air passing through it or to close it if it's cole and open it on a warm day to allow some air to hit me.

                 Something to think about:  Jim

--- In TriumphTrophy@..., brillooo@... wrote:

>
>  
> In a message dated 11/5/2009 5:36:15 A.M. Pacific Standard Time,  
> Bownez@... writes:
>
> I am  considering a Clearview XL, I am 6'2" in height. My I ask your height?
> I'd  like to get the correct size.
>
> Thanks,
>
> Bones in  Mpls
>
>
>
> I'm 6'2" and am long waisted got the 3 inches  taller
>
>
> [Non-text portions of this message have been removed]
>

[Ken Hastie]

> -----Original Message-----
> From: JimB

> Just a thought: I got my Clearview with the adjustable vent and I
> find that it allows me to vary the amount of air passing through
> it or to close it if it's cole and open it on a warm day to allow
> some air to hit me.

It may be that yours is an older Clearview screen.  They originally fitted
the closeable vents (which I didn't think looked very pretty) but then
Clearview stopped offering them as the curvature of the screen was not
compatible with the flat profile of the vent.  This decision was made a the
time that the screen thickness went up from 3mm to 5mm due to some screens
flexing too much and even snapping.

My 5mm screen was only available with the cats eye vents.

It may be that the later screen profiles (2001 onwards) may allow for the
closeable vent due to flatter profile. I don't know.

Ken the Geordie  SST 13
BSA A75R, A10, B40, D10, Triumph Trophy 1200

[Ed Johnson-3]

Here are the available Trophy Clearview Screens;
http://clearviewshields.com/shop/product.php?id=64 and they do show the
adjustable vents. I have a Medium, Grey Tint, with the cat's eye vents. I'm
5'10" and it's the perfect height for me. Clearview claims it's 2" higher
and 2.5" wider than stock. I couldn't tell you because I bought the bike
without a windshield. The original windshield was broken by somebody backing
into the bike in a parking lot and removed. I can't comment on wind noise as
it is the first bike I ever owned with a windshield and haven't ridden any
others that had them either. [We didn't use windshields on flat trackers
back in the 60's](;-)
Ed J.

-----Original Message-----
From: TriumphTrophy@... [mailto:TriumphTrophy@...]
On Behalf Of Ken Hastie
Sent: Friday, November 06, 2009 3:00 AM
To: TriumphTrophy@...
Subject: RE: [TriumphTrophy] Re: Wind Screen Cat's Eyes



> -----Original Message-----
> From: JimB

> Just a thought: I got my Clearview with the adjustable vent and I
> find that it allows me to vary the amount of air passing through
> it or to close it if it's cole and open it on a warm day to allow
> some air to hit me.

It may be that yours is an older Clearview screen.  They originally fitted
the closeable vents (which I didn't think looked very pretty) but then
Clearview stopped offering them as the curvature of the screen was not
compatible with the flat profile of the vent.  This decision was made a the
time that the screen thickness went up from 3mm to 5mm due to some screens
flexing too much and even snapping.

My 5mm screen was only available with the cats eye vents.

It may be that the later screen profiles (2001 onwards) may allow for the
closeable vent due to flatter profile. I don't know.

Ken the Geordie  SST 13
BSA A75R, A10, B40, D10, Triumph Trophy 1200



------------------------------------

List guidelines: PLEASE NO grumpy replies, or replies which merely add
agreement to a previous post. If a reply is only relevant to the original
writer, please REPLY DIRECT to that person. No SPAM, no adult-oriented
topics, and no postings of a political or commercial nature are allowed,
except for personal items for sale/wanted. Please trim old messages to a
minimum when replying.


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