RE: Comparing length increase at top center - 4

Outstanding summary JDR. Ask Holger for $1 every time this is linked.

Zitat von jdr im Beitrag #45

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I ordered a Givi / D5120ST.
Page 6-111 of the user manual indicates that windscreen holding screws should be torqued to 2 lb-ft (2.4 Nm).

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Zitat von hyperm3 im Beitrag #47

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Where did you purchase the Givi screen from in the US? The link is for international purchase.

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I got the Givi looking for the most wind protection,best bang for the buck I figured.

While it does provide more protection it certainly doesnt fit the lines of the RS.
Looking at alternatives I am liking the ridiculously priced Wunderlich touring screen, 5 1/2 inches higher and available in a tint which would suit my black 2018.

Anyone tried this one?

My '16RS came with the Wunderlich touring screen, installed by the previous owner. By itself, it did a reasonable job at wind protection, little buffeting, but always seemed to produce more noise than I cared for. That sent me on a journey, like so many others on the forum. On a hunch, I decided to try the MRA clamp-on Xcreen Sport. Because of the adjustments available I was able to obtain the best overall compromise in obtaining smoother, quieter air in all temperature ranges. This is equally effective on the Wunderlich and the Cali Sci Shorty screens. It's also a more affordable way to start down that path of exploration. There are a few forum members who have the MRA touring or sport screens and are pleased with them. Check out Grumpy Goat's YouTube review https://youtu.be/U8MsEi6h4JM
Revzilla and Twisted Throttle, among others, sell these products. Good Luck!

I'm in Southern California, and after ordering a GIVI D5120ST early morning of December 10, it was delivered 3 days later. Although I ordered from Twisted Throttle in Rhode Island, it was shipped out from GIVI USA in Nevada.

One of the peel-off labels has these 3 things next to each other:
1) Windsock symbol.
2) 130 km/h max.
3) In case of strong wind, drive at moderate speed.
At first, I thought the 130 km/h (81 mph) max was an independent statement from the 2 other pieces of info, in which case I feared that this windscreen would tear off next time I go fast. But now I see it as 3 connected pieces, meaning that when conditions get windy/gusty, this is a reminder to limit your speed as this large windscreen (as any other) acts like a sail, which can affect your steering.

I installed it last night. I had to re-use the rubber grommets and metal inserts from the original (easy to transfer). The bottom left screw (probably because it was last) was hardest to align, but not too bad. I used the upper mounting holes. All screws torqued to specification of 2 ft-lb (24 in-lb, 2.4 N-m) using an appropriate torque wrench, but equivalent to a solid twist with a small screwdriver handle. Appearance: Tall but elegant, nice shading of mounting location.

Today I was trying out 2 new things, new windshield and intercom for my passenger/wife. I'm 5' 10" (1.78 m) but more importantly 35" (89 cm) between top of my head and flat seating surface, and while holding 80 mph (about 130 km/h) I was surprised by how quiet it was: About 10% of previous noise level (OEM windscreen secured to upper mounting holes and in raised position), very close to silence. I can now hear the subdued metallic sounds of the engine if I partially open the visor of my Shoei Neotec II. Most of the noise was from the speakers in my helmet due to the wind hitting the helmet of my passenger and being transmitted via an open intercom to my helmet speakers. Turning off intercom (or passenger tucking head lower) results in near silence. If I raise my upper body by only about 1.5" (4 cm) then wind noise comes back with a roar, so I'm at a sweet spot: Windshield tall enough to put me in near silence, yet I can still see over it by about 2" (5 cm). If I lower the new windshield, then the noise and view is similar to what I had with the OEM windshield in raised position and also in upper mounting holes.

When riding alone, this setup (GIVI D5120ST + Upper mounting holes + Raised position) is near perfection for me, probably preventing hearing loss and more relaxing rides (brain tires after hours of searching for meaning from noise/sound). When 2-up and with the new intercom, I probably traded wind noise for the voice of my chatty wife.

Get_Smart-Cone-of-silence.jpg - Bild entfernt (keine Rechte)

Zitat von jdr im Beitrag #45

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Decided to get a taller windscreen to reduce the noise while riding my 2020 R1250RS, I did some homework which I share for those considering to do the same.

The key desirable characteristic is the increase in height at the top center of the windscreen.
I'm 5' 10" (1.78 m) and with the OEM windscreen attached to upper mounting holes, and raised to the upper position...
The top of the windscreen is well below my eye level and appears as a horizontal line, due to its longer top corners compensating for the sideways curvature.
At 60 mph (97 km/h) when I keep my head in the same position and place a gloved hand palm-forward and fingers sideways at the top of the windscreen, it reduces the wind noise to about 35%, a significant difference. I can still see above my hand.
This is equivalent to a vertical height increase of 4.5" (11.4 cm).
Since the top of the OEM windscreen is angled about 55 degrees from vertical, the top center length would need to be extended by 7.8" [= 4.5" / cos(55) = 19.8 cm].
This sets a desirable windscreen length increase at the top center to 8" (20.3 cm).

Since aftermarket manufacturers do not always specify the length extension of their windscreen at the top center compared to the OEM, I took these measurements that will allow to deduct the needed dimension from their pictures by comparing and scaling to these dimensions of the OEM windscreen:
31.0 cm (12.2") from mid-point of lower holes, to top center.
15.8 cm (6.2") between upper and lower hole on same side.

Summary of the aftermarket windscreens (single piece models, without ugly top orientable extensions) and the extra length they offer at the top center, ordered by longest first. Blue text indicates a link to a web page...
Givi / D5120ST. 7.7" (claim). 7.8" (measured). 108 $US.
Puig / 7617W (Clear). 7.3" (my estimate). 140.59 $US.
ZTechnik / Z2374 (Lt.Tint). 7.3" (measured). 219.95 $US.
PowerBronze / 420-B126. 6.8" (my estimate). About $130 $US + Ship from UK.
AeroFlow / Touring AeroScreen / Tall. 5.7" (claim). 290 $US.
PowerBronze / 420-B124. 3.9" (my estimate). About $130 $US + Ship from UK.
SlipScreens / Touring screen. 2.4" (my estimate). About $65 $US + Ship from UK.
MRA / T Touring Screen. 1.5" (my estimate). 124.95 $US.

I ordered a Givi / D5120ST.
Page 6-111 of the user manual indicates that windscreen holding screws should be torqued to 2 lb-ft (2.4 Nm).

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I have added 4000 mile since installing the GIVI D5120ST.
Very quiet ride, no helmet shake, no bad surprises (cracks, yellowing, deformation).
Cleans well using first a damp cloth to dissolve the big bug splats, then finish cleaning with Plexus.
If something happened to it, like a catastrophic big bird strike, I would get another.

Zitat von jdr im Beitrag #45

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I'm 5' 10" (1.78 m) and with the OEM windscreen attached to upper mounting holes, and raised to the upper position...

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Zitat von zer0netgain im Beitrag #54

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Zitat von jdr im Beitrag #45

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I'm 5' 10" (1.78 m) and with the OEM windscreen attached to upper mounting holes, and raised to the upper position...

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That Givi looks the same as mine. What “upper mounting holes” are there?

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Zitat von duccrazydave im Beitrag #55

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Zitat von zer0netgain im Beitrag #54

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Zitat von jdr im Beitrag #45

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I'm 5' 10" (1.78 m) and with the OEM windscreen attached to upper mounting holes, and raised to the upper position...

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That Givi looks the same as mine. What “upper mounting holes” are there?

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The stock mounts have an upper and lower set of holes to change the height of whatever screen is on the bike

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How much difference is achievable by moving the screen (stock) from lower mounting holes to upper? The RS I test rode had the stock screen in the lower mounting holes and the sound was horrid. I'm wondering if moving to the upper holes would make a substantive difference. Or a somewhat taller screen (say a VStream Sport/Tour - http://www.nationalcycle.com/z2374.html) mounted in the upper holes...?

According to the Aeroflow website, their screens attach to the top and bottom set of mounting holes. In that case, you only have height adjustment from the rocker mechanism.

Ah, guess I should have checked that out before my comment. That takes away one of your fine tuning options. My "Barn Door" California Scientific XL in the upper holes is very effective. If you don't mind the looks.
These windscreen discussions are the ultimate rabbit hole, lol.

Please please please can we ban all windscreen topics
Nothing new to see ...its all available in the million previous posts

Asking nicely