Author [ES] [PL] [PT] [IT] [DE] [FR] [NL] [DK] [SE] [FI] [NO] Topic: Best windshield to eliminate blowback?  (Read 968 times)

0 Members and 1 Guest are viewing this topic.

Online Saddle Tramp

  • Trophy Master
  • ****
  • Posts: 898
  • Have Trophy, Will Travel
    • View Profile
  • Bike: 2015 TTSE - Black
  • City / Town: N. WI / S. AZ
  • Country: USA
Re: Best windshield to eliminate blowback?
« Reply #8 on: January 17, 2021, 09:22:05 pm »
The cutout in the CalSci Windscreen is designed to minimize what you call blowback by equalizing the pressure on both sides of the screen. I highly recommend that you call Mark Lawrence at California Scientific. He is a degreed Physical Engineer that can answer your questions better than any of us here.
Probationary Twisted Trophies Member (Non-Texan)

Online trophied

  • Trophy God
  • *****
  • Posts: 4267
    • View Profile
  • Bike: 2013 Trophy SE
  • City / Town: New Braunfels, Tx
  • Country: USA
Re: Best windshield to eliminate blowback?
« Reply #9 on: January 17, 2021, 10:06:38 pm »
A "physical" engineer???  I've been known to "physically" engineer stuff too, but mine never turn out as well as his. :745:  Yes he really does have a Physics degree. :028:
One of the Founding Members of the Twisted Trophies

Online Saddle Tramp

  • Trophy Master
  • ****
  • Posts: 898
  • Have Trophy, Will Travel
    • View Profile
  • Bike: 2015 TTSE - Black
  • City / Town: N. WI / S. AZ
  • Country: USA
Re: Best windshield to eliminate blowback?
« Reply #10 on: January 17, 2021, 10:15:00 pm »
Are you making fun of me?
Again?
Probationary Twisted Trophies Member (Non-Texan)

Online trophied

  • Trophy God
  • *****
  • Posts: 4267
    • View Profile
  • Bike: 2013 Trophy SE
  • City / Town: New Braunfels, Tx
  • Country: USA
Re: Best windshield to eliminate blowback?
« Reply #11 on: January 18, 2021, 12:02:48 am »
NEVER!  I know you know people. :431:
One of the Founding Members of the Twisted Trophies

Online Saddle Tramp

  • Trophy Master
  • ****
  • Posts: 898
  • Have Trophy, Will Travel
    • View Profile
  • Bike: 2015 TTSE - Black
  • City / Town: N. WI / S. AZ
  • Country: USA
Re: Best windshield to eliminate blowback?
« Reply #12 on: January 18, 2021, 01:58:36 am »
Not any more!
Whew!
Probationary Twisted Trophies Member (Non-Texan)

Offline thogland

  • Trophy Pro
  • ***
  • Posts: 119
    • View Profile
  • Bike: 2015 Trophy SE
  • City / Town: Wasilla
  • Country: USA
Re: Best windshield to eliminate blowback?
« Reply #13 on: January 18, 2021, 02:51:43 am »
So, "blowback"... I'm 6'2" and usually had my stock screen up about 2-3" (measured at the stops at the base of the arms that control tilt/elevation behind the screen). At that height there was more buffeting than blowback, but riding with it down lower resulted in that low-pressure up front/high-pressure behind feeling.

With the CalSci large, I usually have the screen up only 1/2" to 1", and at that height and angle the airflow is very smooth - no feeling of pressure differential at all, while still having weather protection at least as good as anything the stock screen could offer.

Hope that clarifies what I feel before and after the change.

Offline brenchley

  • Trophy Pro
  • ***
  • Posts: 480
    • View Profile
  • Bike: 2014 Trophy SE
  • City / Town: NE Florida
  • Country: USA
Re: Best windshield to eliminate blowback?
« Reply #14 on: January 18, 2021, 05:40:57 pm »
My first Trophy ride on the interstate, at highway speed, with the regular windshield, resulted in buffeting and/or back pressure, depending on the height of the windshield.  Passing semi's seemed to make it worse.

Due to a previous good experience with a Laminar Lip, I procured one for my Trophy.  With the Lip installed on the regular windshield, it eliminated those problems - I typically ride with the windscreen up two or three inches at most or with the windscreen all the way down.  Those couple of inches make a difference in wind noise.  Buffeting and back pressure are gone.  I'm 5'9" for perspective...  The Lips are designed for specific motorcycles.
IBA #69644

Offline Merritt64

  • Trophy Member
  • **
  • Posts: 79
    • View Profile
  • City / Town: Calgary
  • Country: Canada
Re: Best windshield to eliminate blowback?
« Reply #15 on: January 18, 2021, 07:23:59 pm »
I too feel the pressure behind my helmet pulling me forward when I raise the screen.  I am following this thread with interest.  It seems that the CalSci and V-Stream windscreens are the main options.  Need to pull the trigger on one but am unsure which one at this point.