Author Topic: Windshield setup question  (Read 1774 times)

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Offline ckraut

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Windshield setup question
« on: July 22, 2012, 05:46:41 pm »
Hi,

I just installed installed a 25.5 Cee Bailey windshield. I am 6'2" and followed the suggestion on their website for the size.  My goal was/is to be able to see over the windshield while being exposed to as little buffeting as possible.

The wind hits me now on my forehead which is uncomfortable. How do you guys have yours setup and where does the wind hit your helmet?

Offline mdr

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Re: Windshield setup question
« Reply #1 on: July 23, 2012, 12:06:57 am »
About the same. 

I'm playing around with the vent.  If you've got the vent, it likely isn't shaped properly to get air going up the back of the windshield.  On mine it was bent too far in, and it's too wide and short and ill shaped to be a NACA duct. 

On SiSF's suggestion I bent it up quite a bit, and  it seems a little better, but nothing to get excited about.  It's easy to mess with tho', so I'll play with it to see if I can make it better.  Rounding off the 'top' of the slot's profile so it's not just a slab to the 'incoming' air should help too.  I want to find a piece of scrap acrylic to play with first before taking the Dremel, a file or some sand paper to it.
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Offline Outback Jon

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Re: Windshield setup question
« Reply #2 on: July 23, 2012, 12:50:55 am »
I'm 6'1" and had a 26.5" CeeBailey for years.  It was OK, but, like you, I found the wind hit me lower than I'd like.  I have since switched to a Rifle, with a 19" shield.  (Similar in height, as the Rifle also has a base)  I like the Rifle a LOT more, but need to go a bit taller on the shield.  I'm going to grab a piece of plexi and a couple of clamps and play around until I find a height I like. 

One thing I noticed about the CeeBailey, but never got around to really playing with the idea.  If I held my hand right at the top center of the shield, with my fingers pretty much vertical sticking over the top about 3"~4", it really cut the turbulence and noise.  When I pick up the plexi to play with my Rifle, I might put the CeeBailey back on and play with another piece to work on this idea. 
« Last Edit: July 23, 2012, 12:54:17 am by Outback Jon »
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Offline Stasch

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Re: Windshield setup question
« Reply #3 on: July 23, 2012, 01:33:41 pm »
Comparing windshield heights, particularly between rifle and cee bailey is not apples to apples.

A 26.5" Cee Bailey is shorter than a 24" rifle (which is a 5" base with 19" shield mounted on it).

This might help in getting a more accurate height comparison:

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Offline pradsliff

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Re: Windshield setup question
« Reply #4 on: July 23, 2012, 03:13:50 pm »
You might look into adding a laminar lip: http://www.laminarlip.com/concours.php

I put one on my stock windscreen and love it. It lessened the buffeting and wind noise quite a bit and the venturi effect raised the wind blast up a few inches. For me, with a stock windshield, that means I can look over the shield but the wind hits me at the top of my helmet (depending on how much I crouch while I ride).

It's pricy at almost $100, but a good farkle. Worth the money, I think, for someone who commutes everyday like I do.
Cheers,
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Offline Daytona_Mike

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Re: Windshield setup question
« Reply #5 on: July 23, 2012, 04:48:05 pm »
Hi,

I just installed installed a 25.5 Cee Bailey windshield. I am 6'2" and followed the suggestion on their website for the size.  My goal was/is to be able to see over the windshield while being exposed to as little buffeting as possible.

The wind hits me now on my forehead which is uncomfortable. How do you guys have yours setup and where does the wind hit your helmet?
I am 6' 2.5" and I am pretty sure I have one size down from  the tallest they have (25.5) and I see over the top and I want the air to hit me on the forehead.
That is perfect. Do you not wear a helmet?  It is  designed to be that way. What is it you wanted? No air at all AND to see over the top?
That is exactly where I want the air  to be. There is absolutely no buffeting. Also  I can control the amount of air that  enters my helmet with the scoop valves on the top of my helmet, lots on hot days for cooling  and none on cold and rainy days and the flip on the windshield  will drive the rain up  over my line of sight.

« Last Edit: July 23, 2012, 04:55:51 pm by Daytona_Mike »
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Offline Apeman

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Re: Windshield setup question
« Reply #6 on: July 23, 2012, 07:47:51 pm »
You might look into adding a laminar lip: http://www.laminarlip.com/concours.php

I put one on my stock windscreen and love it. It lessened the buffeting and wind noise quite a bit and the venturi effect raised the wind blast up a few inches. For me, with a stock windshield, that means I can look over the shield but the wind hits me at the top of my helmet (depending on how much I crouch while I ride).

It's pricy at almost $100, but a good farkle. Worth the money, I think, for someone who commutes everyday like I do.


My bike came from the PO with the Laminar Lip.  I originally thought it looked dorky, but quickly found out that it quietly and effectively moved the air blast up and almost over my head compared to the bare stock windscreen.  I like it a lot.  BTW, I am 6' tall, and have stock handlebars and seat.  YMMV.
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Offline ckraut

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Re: Windshield setup question
« Reply #7 on: September 11, 2012, 09:55:25 pm »
Thank you for all the input and replies. I have since returned the CeeBaileys and have made my own windshield with the rifle base. Like it a lot better and still have another sheet of lexan to make another if i want. By the way I do wear a helmet as well as gear all the time.

Thanks a bunch,

Matt

Offline mdr

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Re: Windshield setup question
« Reply #8 on: September 23, 2012, 07:27:41 pm »
I'll follow up here on the CeeBailey 'mods'...

Bent in the area in front of the duct some more.  There is a LOT more air coming up the back of the shield now.  I'll ride it like this for a little bit, but I'm thinking it's actually louder now.  Much less buffeting, but lots of HIGH SPEED air noise from the air flow coming up the inside of the shield.  Next step I'm thinking about is to close up where the lip is even a little more to reduce the amount of air coming up and 'tune the flow' so the fast, noisy air is up a little higher.

At lower speeds, around 45-50MPH, the lack of buffeting is apparent and the noise hasn't gotten bad yet.  Up around 65-75'ish, the high speed air is really loud.  Much more so than the clean air when standing up.

Rounding the 'top side' of the slot, I think it helped a little, but was hard to tell.  I mostly used a strip of 100 grit paper to cut the shape, but I also borrowed a vibrating tool to try it with some sand paper.  The head on it was too big to use with the shield on the bike, but it did some good work on the back side of the shield once it was pulled off.

Pushing in the plastic just ahead of the slot helped a lot more!
Mark in Austin, AE5SJ
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