hurtful noise probably due to windscreen turbulence

[ChillMan]

Since you mention silicone I want to just mention that according to the bottle it "contains natural oils, no silicone". Either way, it doesn't seem to contain particles that would polish - in the way we want to have for scratched/matte plastic surfaces... at least that is what I THINK we want to have.

[ChillMan]

Tooth paste might be good BTW. Or whichever chrome polisher you use for your exhaust pipe, yeah?

[ChillMan]

I am still driving with the windscreen off!

I've taken out a saw and sandpaper. Will cut it, but after trying the "gap" idea.

I got some longer screws (and nuts as distancers) - but it had the wrong diameter, less than 1mm too small so maybe it's one of those measured in inches.

About tank bag: which is your favorite to reduce turbulence?

[ChillMan]

a)
Windscreen is now sawed off, the black rubber is glued on the top, and it is mounted on the bike. It looks pretty cool. See photo. I did this change late on Friday, and didn't try it until the next day, when I went on a long tour with some friends. The result is: some reduced turbulence but not much reduced. It hits lower than before, it feels like. The wind protection when I lean forward is of course almost gone.

b)
I put a sponge in the "hole" but it made no difference.

c)
I borrowed my friend's backpack which is designed for biking, and turbulence was surprisingly reduced.

d)
Nothing beats driving around naked!

[ChillMan]

Today was windy so there was some "wind disturbance"... but my brand new aerodynamic motorbike backpack seems to reduce turbulence noticably. I don't get that effect with my regular backpack.

Not affiliated in any way but I would like to show the shape of it:
http://pierce.imgix.net/ProdImages/prod_54380/p54380.jpg?q=60&sharp=40&h=640

[motoOzarks]

Down in the tuck position are you?

[ChillMan]

Maybe, maybe not. :)
You need to explain what that means.

[motoOzarks]

Meaning in order for that pack to be aerodynamic you would need to be lying on the tank like a sport bike.

[ChillMan]

Oh gotcha. Nope.

I use an upright riding position - and the turbulence is reduced.

[motoOzarks]

Oh gotcha. Nope.

I use an uptight riding position - and the turbulence is reduced.

fixed

just making sure you fit in around here

[pxm]

You need to search of some of the older posts. But my advice would be to buy a Palmer screen and brackets and end your problem now.

Agreed 100%