Mod to CeeBailey windscreen

[Claymore]

Now this is a mod that appeals to my cheap-*******ness.
Anyone going to try this on the stocker?

Yup! All geared up to hack my stock shield up this weekend... :blink:

 

[Scab]

Let us know what you think of the results. I will warm up the dremel.

 

[650cent]

Yes, me too. Looks like the plastic is going to be flying this weekend. Who is going to be the first one to **** up their stocker?

Bill

 

[jbay]

++++++++++++++++++++++++++++

 

[Penforhire]

Bump for a good cause! I'm a little nervous about whipping out the Dremel.

 

[Claymore]

This one looked like too much fun to pass up.....

I have a CB +4+4 and experience back-pressure at the desired windscreen height - resulting in a sharp pain between the shoulder blades after about 2 hours.

I still have the stock winscreen, and inspired by Jeff, went ahead and did the mod on Friday night.

I basically followed his instructions, with the exception that I drilled holes in the corners and used a jigsaw to hack out the main area.

The hacking has begun...

I then used the Dremel sander to finish to the lines.

After the Dremel, I used a file to even up the sides, then sandpaper to finish it up - 60grit, then 80, 120, 150, 220, 320, then emery paper. It finished up very nicely.

What would I do different? I would not draw on the tape and use it as a giude - what Jeff did was better - drew right on the windscreen with a Sharpie. Also I would use a dust mask - I must have unwittingly inhaled a bucket of plastic dust....

This is what it looks like:

Stock Windscreen

After taking it for a long ride on Saturday, I remembered why I bought the CB - bringing it up to a speed that would blow the dust off resulted in a LOT of buffeting :dribble: , however there was ZERO Back-Pressue.

Still feeling inspired, I went ahead and did the same job on my CB +4+4 - this time drawing directly on the screen with a Sharpie, and using a dust mask :blink: . I found that putting a white paper behind screen while using the Dremel allowed me to see the lines much better.

Here is the finished product:

CB +4+4

I took it out this morning - not for a really long haul as it is just above the freezing mark here in S. Alberta...

First impressions are very favorable - ZERO Back-Pressure at speed and reduced buffeting at the desired windscreen height - interesting to note that buffeting actually increased at full height - but at my favorite height it was essentially quiet - and this on a gusty day....

 

[jbay]

++++++++++++++

 

[dgfella]

JeffAshe,

Sweet job on the cutouts. You've given me the courage to try this myself some time this summer. I'm also considering cutting down the stock shield to a shorty summer shield. I've never worked with plexiglass, but you've made it look easy. Thanks for the farkle posting.

dgfella

 

[Claymore]

JeffAshe,
Sweet job on the cutouts. You've given me the courage to try this myself some time this summer. I'm also considering cutting down the stock shield to a shorty summer shield. I've never worked with plexiglass, but you've made it look easy. Thanks for the farkle posting.

dgfella

I have cut down a few shields - the trick is to leave it mounted on the bike, tape it off with masking tape, draw your curve, cut with a jigsaw (with a plastic blade), smooth with a coarse file, then sand it down using a rubber sanding block starting with the 60 grit and ending with 320 or so. It is amazing how well this turns out with very little effort.

 

[650cent]

OK, here is how I did it this weekend. First I cut out a cardboard template and taped over the shield with painters tape. Positioned the template and traced it to the tape. Next I used a flexible attachment to my Dremel like tool (actually a Black & Decker) and chucked up a multipurpose cutting bit. After cutting out holes I used a fine grit sanding disk to smooth the edges. I think the secret to using this cutting bit is to practice on a piece of plastic and get the tool speed just right. I used about half speed, and took my time, letting the tool cut without forcing it to much. The flexible attachment is great, much easier to hold then the tool itself.

It didn't take that long to do and I think the job turned out very well, I like the idea of using progressively finer grades of sandpaper to polish the edge.

By the way it really does eliminate a lot of the buffeting and the cockpit is much quieter. :yahoo:

Bill

 

[HaulinAshe]

Wow!!!

It makes me so happy to see everyone's replies and results. I'm glad it's turning out well for everyone so far, and the work you guys are doing is putting my hack job to shame!

Report back from the weekend trip...

Made a 400 mile rountrip with about half the miles on I-95. First time out on that highway with the FJR. Traffic was running 80-85, I was doing 90-105 mph. Did you know that the rear bag will actually start to lift the front at about 110! Guess that's why Yamaha puts that 80 mph max speed warning label on the bag!

Anyway, windshield with the cuts performed flawlessly, even with the Top Gun ECM shelf. It's clear that most of the air really does turn and go right up the backside of the windscreen. I used braided fishing leader for a tether strap on my electronics. One 18" piece running the entire length of the ECM shelf, with lots of slack that could have strummed in the wind like a banjo string on a Deliverence porch. But everything was super calm. Even the extremely small speaker wire running from my Escort to the helmet headset only flopped around mildly.

No whistling, no unusual noises witnessed. One side note. Those Nissan Murano, whacked off SUV type things, they make the most God-awful turbulence at 80+! I had one that refused to be passed going north on I-95. I gave up at 115, and he slipped past me doing about 130. I thought the front end was going to swap out from under me. The turbulence from that thing was like an 18-wheeler but going sideways! Nothing else on the interstate compared to it.

Looks like the only thing left to test, is to get my ass soaked in a thunderstorm to see if the spray is too much to bear. Any volunteers???

 

[madmike2]

Looks like the only thing left to test, is to get my ass soaked in a thunderstorm to see if the spray is too much to bear. Any volunteers???

I'll bet'cha we could get a couple of volunteers to hold the spray nozzles aimed at you while you drive by.

 

[HaulinAshe]

I'll bet'cha we could get a couple of volunteers to hold the spray nozzles aimed at you while you drive by.

Hey, how do you know my ex-wives???

B)

 

[raclow]

Jeff:

Thanks for the update. Good to hear the ECM Shelf worked so well. I have a Satellite Radio Receiver and Radar Detector mounted on my shelf. I was concerned that the wind through the holes might cause these to come off the shelf. You didn't find this to be a problem.

For sure that there will be no rain protection to these items. Let me know how the rain test comes out.

Take care.

 

[brazos parker]

I'm considering making this same modification to my stock screen. But, just want to check to see if those of you who did these cut-outs are still happy w/ them. And, can someone comment on the "rain test?" Thanx.

 

[650cent]

Hey, I'm happy with the way mine turned out. Have not ridden it in the rain yet, but have noticed a few bugs getting through the holes to the back of the dash. Also noticed I don't get bugs splattering on the back of the shield, so I know the back pressure is less. It is also quieter. Its is a great low cost mod and would do it again.

Bill

 

[vic ray]

I did this to my stock shield last fall in conjunction with the Cal Science edging. I have ridden in all sorts of weather, severe rain ect. I think some of you have been worried about the effects that rain may have with two open holes cut out of your windshield. I can't tell a bit of difference in the amount of rain you get either way. I had posted some comments early after doing my shield saying I didn't think it made a great deal of difference but I think I was a little premature in my judgement. I think this set up gives you a better way to fine tune the airflow over your helmet. I can actually get a still pocket of air and be able to raise my visor on my full face helmet. Probably the greatest benefit of this mod. is it completly eliminated the back pressure on my helmet. I had several terrible headaches from that before I changed my screen. I bought the Cal. Science edging right before I modified the windshield and I probably wouldn't have been happy with the results from the edging alone. I think the combination of the two of them works well enough for me to keep the stock screen on the bike.

( Except I just seen the add in Cycle World for the ZTECHNIK www.ztechnik.com Are they making them for the FJR and if so, has anyone tried this?

 

[Groo]

( Except I just seen the add in Cycle World for the ZTECHNIK www.ztechnik.com Are they making them for the FJR and if so, has anyone tried this?

Search using "Vstream" and you'll have lots and lots of answers....

 

[rcsnclh]

I hesitate to ask, but has anyone contemplated this mod on their brand new V-Stream? Possibly overkill, but I seem to recall that some have reported back pressure with the V-stream too. If the holes eliminate backpressure and the new shape of the V-Stream quiets everything down, could this be the ultimate answer? :blinksmiley:

 

[brazos parker]

Well,for better or for worse, I mod'ed my stock windshield this afternoon per Jeff Ashe's directions. Looks OK but pretty obvious it's not a factory modification. I polished the cut surfaces w/ progressively finer grit sand paper, ending up w/ 600 grit emory cloth. The cut surfaces are pretty smooth. However, I see some scratches around the cut-outs where I tried to "bevel" the cut edges. Don't know how to remove those scratches.

I'll go for a ride tomorrow and see how the cut-outs change the air flow.

Stay tuned.