BMWSportTouring BMWST DB
Topic Options
#479317 - 05/24/09 05:26 PM Calsci windshield
Kevin Elliott Offline
Just Joined

Registered: 05/24/09
Posts: 1
Last October, Mark Lawrence at California Scientific [] put a prototype windshield on my newly acquired 2002 R1150R and I would like to provide those interested with my thoughts and assessment.

I purchased the bike from LA after a long absence from the motorcycle scene [read: mid-life crisis] and although I was not interested in a full-on touring bike, I do enjoy the protection of a windshield. After some reseach on the net, I liked the looks and reviews on Mark's design, but he did not have a model to fit the R1150R. He kindly offered to design a prototype for me to try and I picked it up on my ferry ride home to northwest Ontario late October 2008. I stopped by his shop in West Sacramento and after a tour of his facility, he mounted it on my bike. In exchange, I promised to provide a full assessment of the prototype.

Most of the rest of the ride home was an exercise in survival due to the weather and that, together with the fact that I had not been on a bike in almost 30 years, I felt I was not in a good position to give fair and constructive comment at that time. I put the bike back on the road about a month ago and have logged over 7000 miles behind the windshield so here are my thoughts.


The shield mounts on the standard BMW tall bracket, which I had installed on the bike prior to collecting the windshield at Mark's shop. He installed it without problem and I was quickly on my way. When I got home three days later, the weather had turned and the bike was put to bed for the winter. I had six months to polish and play with it in my garage and frankly I was not happy with the way it fit the BMW mounts. It was obvious that the BMW windscreen for which the mount was designed was compound curved [bowl shaped] where as Mark's design had been formed over a cylinder. The mounting holes were in the correct places, but the attachment points did not seat square to the windshield surface. Additionally, the connecting rods between the lower and upper attachment points contacted the inner surface of the windshield.

My wife says I'm too much of a perfectionist but I was not pleased with the fit. I debated the options of scrapping the prototype and purchasing a factory BMW windshield or risking screwing up the $200 mounts trying to modify them to fit. I liked the look of Mark's design on the bike so risked the mods. I straightened the risers slightly using a couple of wooden blocks and a c-clamp. The mounting points were tweeked square using a piece of flat metal stock [1"x12"x1/8" thick] which I drilled, shimmed and attached to each point using the supplied hardware. One at a time, I was able to gently twist each mounting point to the correct angle. Fortunately the bracket material was quite maluable so it was easy to adjust and I am confident there was no issues with cracking. I took my time and the whole process took about an hour. I was quite pleased with the resultant fit.


I am really pleased with the size, shape and looks. I can easily see over the windscreen and the airflow off of it is right at the top on my helmet. I'm not sure what effect the vent holes have in terms of performance as I have not tried it with them covered, but something seems to be working because I experience virtually no buffet of the head , even at high speed. Mark explained that the holes help equalize the pressure behind the shield which in turn smooths the flow of air off the windshield.

All in all, I am quite pleased with the design, dispite the extra time required to fit it the way I wanted. Some may not be as bothered as I was but I think the little extra effort was worth it. Mark's design seems to perform very well and I highly recommend it to anyone looking for a screen for their 1150R. Mark has some photos of the windshield on my bike at his website.

Kevin Elliott, Fort Frances Ontario, Canada

#479511 - 05/25/09 02:31 AM Re: Calsci windshield [Re: Kevin Elliott]
BeemerLover Offline

Registered: 05/14/07
Posts: 540
Loc: Charlotte, NC
It's a good shield. I have one on my R12RT and it performs as advertised. It could be a little wider though. I get minor buffeting around the sides.
'07 R1200RT

You only need two tools in life - WD-40 and Duct Tape. If it doesn't move and should, use the WD -40. If it shouldn't move and does, use the duct tape.

#479962 - 05/26/09 12:15 PM Re: Calsci windshield [Re: BeemerLover]
Ebbo Offline

Registered: 03/23/02
Posts: 275
Loc: York, England
The 1200RT screen is the same, double curvature where as the Calsci is single curvature as made. Despite that Iíve come to really appreciate just how well it manages the airflow.

On a recent trip up in to Scotland I first had abandon earplugs then I had to completely remove the right side ear cup from my helmet due to intense ear pain. Thank heavens I had the Calsci screen to hide behind or that trip would have been a whole lot worse.
Trip: Orkney Isle 2009
Ride: R1200RT Battlecruiser

#480008 - 05/26/09 02:37 PM Re: Calsci windshield [Re: Ebbo]
RT Fan Offline

Registered: 01/14/09
Posts: 101
Loc: Dubuque, Iowa
I have a CalSci screen on my 08RT and love it. It is the best aftermarket windscreen that I have purchased. No wind noise or wind buffeting. I can actually hear my radio at highway speeds now.
2008 R1200RT
Sand Beige Metallic
2007 Moto Guzzi Norge (gone)
2006 Goldwing (gone)

#480122 - 05/26/09 07:46 PM Re: Calsci windshield [Re: RT Fan]
Trinity Offline

Registered: 07/23/01
Posts: 808
Loc: Dallas, TX, USA
Yet another very satisfied CalSci customer here. It's so effective that I have to switch back to the stock screen in the hot summer months in order to get more cooling (??) air flow.

I like the CalSci design so much that I modified my stock screen with roughly the same cutout for better air management...seems to work just fine.
Byron Lawrence
Dallas, TX
('08 R1200RT)

#480252 - 05/27/09 01:57 AM Re: Calsci windshield [Re: Trinity]
workin' them angels Offline

Registered: 12/14/08
Posts: 1585
Loc: Indianapolis
Welcome to the board, Kevin.

So you've ridden 7000 miles in a month (I thought they used Km in Canada?) and with all that biking you just joined this site and your first post is a product promo (that reads like an product description for a Griot's product)?

Do you have any disclaimers or anything? While I have nothing against CalSci or their products - I couldn't help thinking as I read your post how similar it reads to many mail order catalog product descriptions in vogue today (what with the subtle admissions and folksy mid life crisis and you're wife's perfectionist comments).

Just my $.02.

What do you think about motor oil?
06 R12RT

The point of the journey is not to arrive...