Author Topic: Selfmade screen  (Read 526 times)

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Offline MohKraats

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Selfmade screen
on: 10 April, 2021, 10:10:33 PM
hello fellow bikers,
As I am as a typical dutchman, not the smallest around (1,86m) where more length went into my upper body then into my legs,
I have trouble hiding behind the screen.
My SBF already did have the touring version MRA screen fitted.
That didn`t do nothing for me.
Then I got a nice clamp-on screen extension from Aliexpress.
That was already quite an improvement.
And not to bad either. I have done over 200km/h, with the extension full out, but no issue. It just kept sitting there. :047: :047:

But still, the top of my helmet still in turbulence.
So, since at work I got access to Siemens NX, a nice drawing app, I decided to give it a go myself.
I took the dimensions and the curving of the bottom part of the MRA screen.
Then just pulled it out upwards, till 600mm long.
Made a DXF file from that and had a piece of 5mm plexiglass cut out by a local company here.
I made a round mall from wood, to bend the plexiglas on. Radius 250mm.
Well I tried to bend that into the desired curvature, but such a piece of plexiglas just won`t get hot enough with just a heatgun.
And above that, when to hot, you will get instant smoke color ..... :156: :156:
ANd since I made the piece a bit big for the ove in my kitchen ..... :003:
I was lucky to find a suitable oven at work.
There My colleagues knew to tell me how to treat it.
First you have to get it to 160 degrees celcius.
Then you drape it over your mall (prefereably without to many blisters on the fingers)
After that it goes back into the oven, including mall to cure at 80 degrees celcius for a couple of hours, this to get the stress out of the plexiglas.

And well,
finally, I`ve got it on my bike.
It looks a bit funny, but it does work. :001: :001:
Now it looks like a CBF scooter..... :012:

Greez,
Moh
Last Edit: 10 April, 2021, 10:14:04 PM by MohKraats

#1

Offline MohKraats

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Re: Selfmade screen
Reply #1 on: 10 April, 2021, 10:14:33 PM
Picture of my mall

#2

Offline ushirlo

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Re: Selfmade screen
Reply #2 on: 10 April, 2021, 11:44:08 PM
omg.......what a sail ....
did you sign it up for the america's cup....
ae..............

#3

Offline MohKraats

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Re: Selfmade screen
Reply #3 on: 11 April, 2021, 08:35:08 AM
Yep,
That`s what I thought the moment I saw it on the bike.
And still ....
When I sit on it, my view is still OVER the screen, not through it.
I am not that tall.
Strikes me that the commercial screen usually d have some kind of coloring, like black bottom half.
That of course does break the view. Makes it seem less tall.
So maybe I will give that a go.

Anyway,
I used to own a BMW R1100RT too, you know, the one with full fairing ....
Technically, such bike ain`t great, so I sold it.
The fairing however does do a great job on that thing.
To my experience, wind noice is only comfortable on either a naked, or behind a full size screen.
Anything in between leaves you will turbulences on your helmet, caused by the screen.

Well, since the CBF needs a load of work to make it a naked (since I already have it in my garage)
I decides to try going the other way.
It isn as good as on such BMW, but still.
I can now do 200km/h without stress, just sitting straight up, no need for earplugs.  :002: :002:
So, that`s a win, I`d say.

Well anyway, I will see if I can make something of it.
And ah, I can still always get me a different model bike right ??

Greez,
Moh

#4

Offline MohKraats

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Re: Selfmade screen
Reply #4 on: 19 April, 2021, 09:58:59 AM
The story continues,

After driving around a bit more,
I found out that I made my screen just not wide enough, so I got too much wind in case of side winds too quickly. :190: :190:
Secondly, around 120~130 km/h, I was suffering of a lot of turbulence hitting me on the head :012:, quite hard. :087: :087: :087:

So, the screen is gone again. :015:
Up to the next solution.....

#5

Offline MohKraats

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Re: Selfmade screen
Reply #5 on: 01 May, 2021, 03:32:50 PM
Update:

fter trying a GIVI touring screen,
I am back to my self made screen again.
However, now with the addition of a screen extension on top.
I have put the screen in the lowest postion, and added the screen extension.
That quiets the turbulence noise quite a lot.

Reason to turn back to my selfmade screen is that teh GIVI sreen is quite floppy at higher speeds (over 100km/h) and with rougher weather (bft5 and above)

I am thinking about making me a new screen again, a bit wider then this one, and somewhat shorter.
I have made this screen 60cm high. and just under 40cm wide (33 at the top)
It turns out higher then needed when using an extension, and just to narrow to give the desired wind protection.

After some try-outs I found that best siye for the screen on this bike is approx 50cm high and 42~44cm wide (36~38 at the top)
And to have a quiet ride, one doe have to have a screen extension, or slits or holes in the screen.

Grez,
Moh