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Old June 6th, 2017   #1
Bddo
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Default Windshield effect on passenger

I'm trying to improve the rough airflow on my wife when riding the ST. I've got the stock windshield and even when it's raised all the way up, it doesn't provide much relief for her from the air buffering and noise.

Would raising the windshield up on the electric arms help or do I need to look at an aftermarket windshield?

Thanks.
Bryan
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Old June 6th, 2017   #2
Rob2m
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Default Re: Windshield effect on passenger

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Originally Posted by Bddo View Post
I'm trying to improve the rough airflow on my wife when riding the ST. I've got the stock windshield and even when it's raised all the way up, it doesn't provide much relief for her from the air buffering and noise.

Would raising the windshield up on the electric arms help or do I need to look at an aftermarket windshield?

Thanks.
Bryan
Cant answer for a pillion but mine for me is best in its lowest position, as it gets higher the turbulence gets worse till its nearly full height but the bike doesn't handle nearly as sweetly.
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Old June 6th, 2017   #3
echo
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Default Re: Windshield effect on passenger

What happens when the shield is all the way down?
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Old June 6th, 2017   #4
Bddo
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Default Re: Windshield effect on passenger

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Originally Posted by echo View Post
What happens when the shield is all the way down?
When the shield is all the way down is when the turbulence is the worst.
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Old June 6th, 2017   #5
Superdirk
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Default Re: Windshield effect on passenger

Higher up should be better. I find the mirror deflectors also help quite a bit.
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Old June 6th, 2017   #6
Dan55
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Default Re: Windshield effect on passenger

I found the stock windshield was creating turbulence and a back-pressure effect i.e feeling the wind pushing me forward. I bought the VStream windshield few years back and felt improvements. I would say roughly 50% less turbulence for the driver and 30% less for the passenger. I always ride with a line of sight just above the windshield.

BTW, the quality of the VStream (optics, resistance to scratches etc.) is far better than the stock as it is like new after almost 8 years.
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Old June 7th, 2017   #7
echo
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Default Re: Windshield effect on passenger

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Originally Posted by Bddo View Post
When the shield is all the way down is when the turbulence is the worst.
Huh. For me lowest was good most of the time and when I went to all the way up, it was quiet but the bike was more influenced by tractor trailers and crosswinds and mpg went to 40 from 44. As well as being unsufferably hot on warm days.

Once on a trip with my ST11 I got so annoyed with the wind noise I took the already cut down windshield off and threw it in the trash. It was pretty quiet after that! Lucky there wasnt much rain till I got home.
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Old June 7th, 2017   #8
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Default Re: Windshield effect on passenger

I solved this for my wife years ago by going with a wider windshield and raising it just a little. Do NOT raise it up all the way!

The buffeting against her head is actually coming around the sides of the shield.

I went with an Aeroflow windshield (not their sport version, the wider version). It also comes with a Laminar Flow Plate that velcros onto the plastic in front of your dash. This flow plate forces the airflow up against the backside of the windshield so that, when it comes off of the top lip of the shield, it balances/smooths out the air flow.

In order for this to work, however, do not raise the windshield more than 1/2 inch to 3/4's of an inch.
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