Author [NL] [FR] [ES] [DE] [SE] [IT] Topic: Windscreen Mod  (Read 2624 times)

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  • Offline freeride4tom

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    Offline freeride4tom

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    Windscreen Mod
    on: Mar 30, 2019, 11.35 pm
    Mar 30, 2019, 11.35 pm
    I've found cutting a hole like Cal-Sci windscreens in my screens (Cee Bailey and stock) the back-pressure goes away. Used an oscillating tool/dremel/sandpaper and polishing compound. It took some faith cutting my no-longer-made Cee Bailey but I spent about 4 hours being careful.



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  • Offline Traxx

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    Offline Traxx

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    Re: Windscreen Mod
    Reply #1 on: Mar 30, 2019, 11.56 pm
    Mar 30, 2019, 11.56 pm
    Just making sure, by back pressure are you talking about the pressure pushing against the back of your helmet at interstate speeds?
    I am interested in hearing more about this.
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  • Offline trophied   us

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    Re: Windscreen Mod
    Reply #2 on: Mar 31, 2019, 12.20 am
    Mar 31, 2019, 12.20 am
    Nice job Freeride!  Did you get Cal-Sci dimensions somewhere or just approximate it.  Glad it worked out well for you.
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  • Offline freeride4tom

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    Offline freeride4tom

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    Re: Windscreen Mod
    Reply #3 on: Mar 31, 2019, 12.51 am
    Mar 31, 2019, 12.51 am
    *Originally Posted by Traxx [+]
    Just making sure, by back pressure are you talking about the pressure pushing against the back of your helmet at interstate speeds?
    I am interested in hearing more about this.

    Yes, that push-from-behind drove me nuts. I think the vent helps equalize the air speed/pressure between front and back of screen. It works on my stock screen well. My Cee Bailey was just finished today so it's untested.
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  • Offline freeride4tom

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    Offline freeride4tom

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    Re: Windscreen Mod
    Reply #4 on: Mar 31, 2019, 12.59 am
    Mar 31, 2019, 12.59 am
    *Originally Posted by trophied [+]
    Nice job Freeride!  Did you get Cal-Sci dimensions somewhere or just approximate it.  Glad it worked out well for you.

    Hey Trophied, I approximated the vent size from a close up pic hoping they engineered the shape to be effective. Seems to work well on my stock screen(Cee Bailey screen is untested, just finished it ). I rounded off the top of the screen level with the "dip" and reduced some helmet buffet also on the stocker. I gotta quit chopping things up......
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  • Offline freeride4tom

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    Offline freeride4tom

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    Re: Windscreen Mod
    Reply #5 on: Mar 31, 2019, 02.29 am
    Mar 31, 2019, 02.29 am


    This is my stock screen with vent and rounded top edge.
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  • Offline brenchley   us

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    Offline brenchley

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    Re: Windscreen Mod
    Reply #6 on: Mar 31, 2019, 12.45 pm
    Mar 31, 2019, 12.45 pm
    *Originally Posted by Traxx [+]
    Just making sure, by back pressure are you talking about the pressure pushing against the back of your helmet at interstate speeds?
    I am interested in hearing more about this.

    I eliminated the back pressure by use of a Laminar Lip - successful use for several years now and previous good experience on a BMW.  Another option, perhaps...

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  • Offline Saddle Tramp   us

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    Offline Saddle Tramp

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    Re: Windscreen Mod
    Reply #7 on: Mar 31, 2019, 04.57 pm
    Mar 31, 2019, 04.57 pm
    *Originally Posted by Traxx [+]
    Just making sure, by back pressure are you talking about the pressure pushing against the back of your helmet at interstate speeds?
    I am interested in hearing more about this.

    I have used CalSci windscreens on several of my motorcycles, with excellent results.

    You can read their explanation of design principles here:
    https://www.calsci.com/motorcycleinfo/Fairing.html
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