BMW Luxury Touring Community banner
1 - 20 of 33 Posts

·
Registered
Joined
·
208 Posts
Discussion Starter · #1 ·
I received and installed my California Scientific Windscreen on my K1600GTL. I got the GTL+1.5", as I'm going for an inch taller than the high seat build from Russell Day-Long, so it's too tall for me at this time, although I can see over it just fine with it just above park position.

I rode solo a bit tonight with it, and it's WAY quieter than the OEM shield, and even all the way up it has very little back pressure, unlike the OEM, which pushed my helmet ahead if it got it high enough to quiet the windblast a bit. Even then, the Cal-Sci is quieter in ANY position than the OEM was at its best.

The Cal-Sci shield does look a bit odd, with the big hole in it, but it really works. I could feel no air coming through it, so it must indeed be going up the back of the shield as advertised. I don't know about the rain coming through that hole yet, but I should have plenty of opportunity to find out this weekend. If I manage to get caught in the rain, i'll report the results.

I also took the wife for a short ride to check out the passenger results. She reports that she gets a tiny bit of wind on her shoulders, but that's it. I did not exceed 90 MPH, it was dark after all, but there was almost no wind noise, even at that speed, although I could hear noise from other vehicles tires and exhaust, and some engine and exhaust noise from the GTL.

I suspect that most will prefer the shorter version, equal to OEM, as only those that are doing seat mods, or extra tall in the body will need such a tall shield. On the other hand, if I need to hide behind it due to heavy rain or hail, mine goes plenty high to allow that. :D

Edit to insert link: http://www.calsci.com/motorcycleinfo/K1600GTprod.html
 

·
Registered
Joined
·
14 Posts
Thanks for the update Ruben. I've been waiting to hear some reviews before jumping in on one of these. The science behind it makes a lot of sense to me, but water being heavier then air concerns me. I'll be interested to hear if rain gets through the hole. On a touring bike I expect to see rain. If your using your bike for more then a bar hopper, or errand runner rain is gonna be in the mix. Please report back if you could. I'm curious of three things:
1. How is it for the passenger? My wife and I travel often together
2. How much was it and how long did it take to arrive?
3. does it keep you dry?
Thanks for the feedback

pete
 

·
Registered
Joined
·
208 Posts
Discussion Starter · #3 ·
wdwrkr said:
[Snip]
1. How is it for the passenger? My wife and I travel often together
2. How much was it and how long did it take to arrive?
3. does it keep you dry?
Thanks for the feedback

pete
1. See OP, My wife, sitting as pillion, says it's great, better than we ever got on either of my Goldwings, better than her R1200RT (rider position). She wore no jacket, just a short sleeve t-shirt so she really feel any wind. She said she got a tiny bit on her shoulders, no noise or wind buffeting at helmet level, and we could visit (with opened visors) at an easy 70 + MPH (not saying how much plus!) The GTL wind wings were closed, and I was looking well over the shield. It was about even with my nose.

2. Check the link above. They cost 140-225 US, plus shipping (plus tax for California, i'd guess). I paid 225.00, but only because it was the extra tall. The other GTL shields are all 210.00 each, with the GT shields dropping down from there. It shipped the same day I ordered, UPS ground predicted six day delivery to South Florida (not counting the pickup day) on their tracking, but it took seven. The shipping box looked like a driver had sat on it for some of the trip, a bit alarming at first sight, but everything inside was in perfect condition.

3. I'll try to find out this weekend, we're supposed to get a lot of rain again. I'll be working all weekend, but I'll try to get some rain riding in. We did ride in some light mist last night, but that doesn't count. I want to know about performance in hard rain at speed. I also need to check out how the wind wings work during HOT weather ride. I'll check that out first chance I get too.

Honestly, I might call it a keeper, even if it floods me LOL. The difference in quiet comfort compared to the OEM is unbelievable. However if I do get really wet, I "may" try the Cee Bailey, I've had fairly good results with them in the past on various bikes, but never ever have I had anything that was such a huge improvement as this CalSci. BMW should be ashamed of their windscreen effort. :(
 

·
Registered
Joined
·
193 Posts
I'm going to be watching this thread carefully to see your rain results. I'd like something quieter too, and ideally I'd like to get something a tad shorter than the stock GTL shield. I find that when I bring it up enough to cut the wind noise and turbulence it's just below eye level, I'd like that to be a bit lower.
 

·
Registered
Joined
·
14 Posts
Thanks Ruben, I'm seriously considering this screen. The rain is the only drawback I may have. It sounds like a godsend for the wife so we will see. Aeroflow seems slow in getting in the game so Cal Sci is moving up the charts.

pete
 

·
Registered
Joined
·
364 Posts
I put one of these on my RT and did not find it made any positive difference.

I also found the quality of the acrylic was lousy. It turned almost opaque whern it got really cold.

I then bought a Cee Bailey and it did. I just ordered a Cee Bailey 22". I will post my findings when I get it.
Ken
 

·
Registered
Joined
·
1,566 Posts
Entirely different bike, but a couple months ago I installed a CalSci on my Concours14. The wife and I LOVE IT!!! I've had several Cee Bailey's shields in the past, and this is comparable in quality, ... and I like the looks of it more.
 

·
Registered
Joined
·
208 Posts
Discussion Starter · #8 ·
3. Rain performance (continued) I got a chance to check out the CalSci windscreen in a real frog stangler rainstorm today. It was raining so hard that traffic was moving 35-40 MPH tops, water couldn't run off the highway fast enough, so we were riding in something like three inches of water, and visibility was down to maybe a city block or so. Cars were throwing up water higher than my head, and my front tire was throwing out water that hit my legs almost up to my knees. At one point, my wife had water hit her feet on her R1200RT hard enough to push her feet completly off her footpegs. We're talking serious rain! (I should have brought my GS) :D

In such conditions, yes, water does come through the CalSci vent. At 30 MPH, some spray was hitting my upper chest, and as speed increased, the spray decreased, but hit higher on my body. At 45 MPH it was hitting my face shield and upper helmet. I "think" it would have been over my helmet at something just over 50 MPH, but neither traffic or my common sense would allow me to go any faster. I was throwing up a rather impressive roost as it was, I was getting concerned about hydroplaning.

Once the rain let up a bit, and we got our speed up to just over 50 MPH in a heavy drizzle, the spray no longer hit my faceshild, in fact I didn't see any spray anymore, but some water was running UP the inside of the windscreen. It May have been hitting my shoulders, most likely was, but I couldn't feel it through my Darrin jacket.

Due to the rain, I haven't checked out airflow with the wind wings open yet.

Overall, I'm impressed. Although the hole does allow water through, in light rain it doesn't seem to matter much. Until I find something better, I'm stamping the CalSci a keeper for me. (YMMV) And like Joe, I like the looks too.
 

·
Registered
Joined
·
14 Posts
Ruben, it seems you may be nuttier then even I. When I asked you to report on riding in the rain I didn't mean to go on a suicide run LOL. Anyway thanks for the update. I'm not sure I would have continued in the conditions you reported on (and I tend to ride through most conditions). Now I'm torn as what to do, while I really like the wind review, but I would hate to be 1000 miles from home and find that a weather system was coming in and my options were to sit it out or drink road grime. I'm leaning toward giving it a try anyway, but for me one of the primary reasons for a screen is to keep my visor clear so I can see. hmmm well they are closed till monday so I guess I've got a day or two to contemplate. I'd like to be patient and wait for the aeroflow but I've got a ten day trip down the blue ridge approaching quickly, and know my wife would like an improvement. drats I was hoping you'd report high and dry.

thanks
pete
 

·
Registered
Joined
·
208 Posts
Discussion Starter · #10 ·
wdwrkr said:
Ruben, it seems you may be nuttier then even I. When I asked you to report on riding in the rain I didn't mean to go on a suicide run LOL. Anyway thanks for the update. I'm not sure I would have continued in the conditions you reported on (and I tend to ride through most conditions). Now I'm torn as what to do, while I really like the wind review, but I would hate to be 1000 miles from home and find that a weather system was coming in and my options were to sit it out or drink road grime. I'm leaning toward giving it a try anyway, but for me one of the primary reasons for a screen is to keep my visor clear so I can see. hmmm well they are closed till monday so I guess I've got a day or two to contemplate. I'd like to be patient and wait for the aeroflow but I've got a ten day trip down the blue ridge approaching quickly, and know my wife would like an improvement. drats I was hoping you'd report high and dry.

thanks
pete
We knew we were going to ride in rain when we left, but we wanted to get to our BMW dealer anyway. My wife wanted to pick up her new highway pegs for her RT, and they offered to put them on for free, so we had a free hamburger, hot dogs, chips, and sodas while waiting. Wasn't too many others (silly) adventureous enough to ride today, so we had no trouble finding parking LOL. Actually, it was fun, but I wouldn't have wanted to ride all day in that. :D

Two possible solutions for you:
1. Buy the Cee Bailey.
2. Stop at home depot, buy some 1/8" plastic to make a "plug" to fill the hole. See rain, stop to put on rain gear, install plug, and go. Rain stops, stop bike, remove rain gear and plug, and away you go again. I'm thinking a triangle shaped plug should work well, one inside, one outside, with a screw in each corner, with wing nuts to make install quick and easy. I'm going to hack one out this weekend, and see how it goes. It might NOT work, due to the curvature of the windscreen, but I'm gonna give it a try anyway. Probably be ugly, but would only be used in heavy rain.
 

·
Registered
Joined
·
14 Posts
Thanks Ruben, I had already considered the possibility of making a plug for the hole. I would be hesitant to drill the windshield as it may make a pressure point which could crack under the wind load. I'm a cabinet maker by trade and was considering the idea of using a piece of 1/4 inch plexy glass cut to shape and rabbited out on one side (the exterior face) then I could place two toggles right and left to keep it from falling out. The advantages are no drilling of the screen, and the relatively cheap cost of plexy glass, also you could look though it. This would however probably nullify the advantages of the cal sci screen while in place, but I think I could heat the plexy enough after shaping to make it curve close enough for a strip of adhesive weather stripping which would prevent scratching. just a thought, but I'll call Mark again tomorrow and see if he can send the cut out w/ the screen. He should be able to if he is using a cnc machine, if he will then a two sided toggle could do the trick, and leave a minimal passage for H2O. It's not that I expect to stay 100% dry, if I did I guesss I should look for a new hobby, I just don't want to get soaked. Thanks for your help in this

pete :think: :think:
 

·
Registered
Joined
·
208 Posts
Discussion Starter · #12 ·
wdwrkr said:
Thanks Ruben, I had already considered the possibility of making a plug for the hole. I would be hesitant to drill the windshield as it may make a pressure point which could crack under the wind load. I'm a cabinet maker by trade and was considering the idea of using a piece of 1/4 inch plexy glass cut to shape and rabbited out on one side (the exterior face) then I could place two toggles right and left to keep it from falling out. The advantages are no drilling of the screen, and the relatively cheap cost of plexy glass, also you could look though it. This would however probably nullify the advantages of the cal sci screen while in place, but I think I could heat the plexy enough after shaping to make it curve close enough for a strip of adhesive weather stripping which would prevent scratching. just a thought, but I'll call Mark again tomorrow and see if he can send the cut out w/ the screen. He should be able to if he is using a cnc machine, if he will then a two sided toggle could do the trick, and leave a minimal passage for H2O. It's not that I expect to stay 100% dry, if I did I guesss I should look for a new hobby, I just don't want to get soaked. Thanks for your help in this

pete :think: :think:
Good idea, I hadn't thought seriously about getting the plug from CalSci. I had no plans of drilling the windshield, only the plug, but I like your idea better. Let us know if they can supply a plug.
 

·
Registered
Joined
·
8 Posts
btw, have a careful look at your stock GTL windshield. About 1" up from the center bottom there's a little branded-in BMW logo. No surprise there, it's a BMW. About 1/2" below that you'll see a little branded in "NC" logo. The stock shield is a VStream, made by National Cycle for BMW.
 

·
IBR# 366
Joined
·
16,648 Posts
marklawrence said:
The stock shield is a VStream, made by National Cycle for BMW.
The stock shield may be made by National Cycle, but that doesn't make it a VStream. BMW's designers have probably called for a specific shape based on their drawings to get a specific aesthetic, whereas the VStream shape is supposedly optimized for better airflow.
 

·
Registered
Joined
·
208 Posts
Discussion Starter · #16 ·
meese said:
The stock shield may be made by National Cycle, but that doesn't make it a VStream. BMW's designers have probably called for a specific shape based on their drawings to get a specific aesthetic, whereas the VStream shape is supposedly optimized for better airflow.
I suspect this to be true. Interesting enough, my dealer says others that have bought GTL's from him think the OEM windscreen is fine. His sales guy is tall, like me, and we both thought the OEM screen was too noisy. Dealer himself is shorter, and he thought it was fine as it was.

In any case, the CalSci really works for me, quiet and almost turbulence free. Now, to get seat done, install a radar detector and I should be good to go. This is looking like it might be the least farkled bike I've owned in a long time, it's pretty complete as is. Lets see now, where would I put a fuel cell, water jug with bite valve, another Nav, HID driving lights ... :histerica
 

·
Registered
Joined
·
8 Posts
I am glad the Cal-Sci windshield is working for you and is much quieter. I certainly am looking for an upgrade to the OEM shield. However, the water coming through the windshield vent straight into your helmet visor at 45 mph is a deal breaker for me.
 

·
Registered
Joined
·
193 Posts
bbellew said:
I am glad the Cal-Sci windshield is working for you and is much quieter. I certainly am looking for an upgrade to the OEM shield. However, the water coming through the windshield vent straight into your helmet visor at 45 mph is a deal breaker for me.
Yeah, gotta' admit it's a deal-breaker for me too. I get caught in torrential downpours too often to put up with that, and while the plug solution sounds interesting it also sounds like a PITA to have to stop and put it in and take it out once you think you're out of the heavy weather.
 

·
Registered
Joined
·
208 Posts
Discussion Starter · #19 ·
Raaze12 said:
Yeah, gotta' admit it's a deal-breaker for me too. I get caught in torrential downpours too often to put up with that, and while the plug solution sounds interesting it also sounds like a PITA to have to stop and put it in and take it out once you think you're out of the heavy weather.
Yeah, I agree about the plug being a bother, I've decided to not bother with it. The screen works so well in non rain, and it's so seldom that I ride in that heavy of a downpour and I'm not gonna bother. It's not like that much water gets through anyway.
 

·
Registered
Joined
·
89 Posts
wdwrkr said:
Thanks Ruben, I had already considered the possibility of making a plug for the hole. I would be hesitant to drill the windshield as it may make a pressure point which could crack under the wind load. I'm a cabinet maker by trade and was considering the idea of using a piece of 1/4 inch plexy glass cut to shape and rabbited out on one side (the exterior face) then I could place two toggles right and left to keep it from falling out. The advantages are no drilling of the screen, and the relatively cheap cost of plexy glass, also you could look though it. This would however probably nullify the advantages of the cal sci screen while in place, but I think I could heat the plexy enough after shaping to make it curve close enough for a strip of adhesive weather stripping which would prevent scratching. just a thought, but I'll call Mark again tomorrow and see if he can send the cut out w/ the screen. He should be able to if he is using a cnc machine, if he will then a two sided toggle could do the trick, and leave a minimal passage for H2O. It's not that I expect to stay 100% dry, if I did I guesss I should look for a new hobby, I just don't want to get soaked. Thanks for your help in this

pete :think: :think:
If the intent is to eliminate water spraying on you in the rain, you shouldn't have to plug the hole. Water droplets are denser and heavier than air (forgive the statement of the obvious), so what you need to do is "de-energize" them (slow them down) so they drop from the airflow, rather than up and onto your or the helmet face screen. A simple screen at a 45 angle to the airflow through the hole should greatly reduce spray. Or, a series of stepped plastic strips, which allows air easily through but causes the water to drop, could also work.

I too have some nervousness about where all that water is supposed to go.
 
1 - 20 of 33 Posts
Top