Painting a Windscreen - I Had Issues!! - Yamaha FJR Forum : Yamaha FJR Owners Forums
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post #1 of 14 (permalink) Old 06-14-2020, 03:51 PM Thread Starter
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Painting a Windscreen - I Had Issues!!

I went to paint the inside of my trimmed down V-Stream windscreen and had some major issues. I've painted dozens of windscreens over the years, all without issue. After carefully masking off the front side, I always clean the inside with alcohol, to remove any fingerprints and/or oils/residues/dirt/etc. I also use paint that is made for RC car bodies, since it's supposed to adhere great to plastics and acrylics.

However.....after painting the inside of my V-Stream, and letting it dry for a few days, the paint peeled right off!!! I thought I read somewhere that National Cycles (V-Stream maker) uses some sort of coating on their screens. I (incorrectly) assumed it would just be on the outside of the screen.

My plan is to wet sand the inside with 1500 grit to "rough it up" a bit, then try painting it again. Has anyone ever painted the inside of a V-Stream windscreen? Any other thoughts or ideas as to why the paint didn't stick the first time?

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When I was a track-a-holic on my R1 & R6, I used to think that the FJR was an old man's bike. Then I got one and absolutely love it. Hey...wait a minute!
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post #2 of 14 (permalink) Old 06-14-2020, 09:58 PM
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All windshields likely have a hard coating as do your headlight lenses. Depending on the process, the hard coating is a very thin liquid either sprayed on or part is dipped in it, it is very thin... resists things sticking to it. If painting, I'd go rougher than 1500 grit, say 600 grit... maybe test a piece of plastic first, and see what "roughness" shows through on the non-painted side?

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post #3 of 14 (permalink) Old 06-15-2020, 10:50 AM
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Holy crap!!! Do not go 600grit!!! You will spend hours buffing that back out. 1500 grit scotch bright pad will show through glossy paint. I would start with nothing less than 2000. The liquid polish sold in stores to refinish car headlights is about 2500 grit. That might actually do well for you.

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post #4 of 14 (permalink) Old 06-15-2020, 02:01 PM Thread Starter
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If I sand the inside, then paint it, won't the paint fill in any voids/scratches left by the sandpaper?

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When I was a track-a-holic on my R1 & R6, I used to think that the FJR was an old man's bike. Then I got one and absolutely love it. Hey...wait a minute!
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post #5 of 14 (permalink) Old 06-15-2020, 02:03 PM
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I think so, but you can test on a piece of acrylic, paint and see what it looks like from the unpainted side you're going to be looking through.

Ray
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post #6 of 14 (permalink) Old 06-15-2020, 02:07 PM
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Quote:
Originally Posted by Mad German View Post
I went to paint the inside of my trimmed down V-Stream windscreen and had some major issues. I've painted dozens of windscreens over the years, all without issue. After carefully masking off the front side, I always clean the inside with alcohol, to remove any fingerprints and/or oils/residues/dirt/etc. I also use paint that is made for RC car bodies, since it's supposed to adhere great to plastics and acrylics.

However.....after painting the inside of my V-Stream, and letting it dry for a few days, the paint peeled right off!!! I thought I read somewhere that National Cycles (V-Stream maker) uses some sort of coating on their screens. I (incorrectly) assumed it would just be on the outside of the screen.

My plan is to wet sand the inside with 1500 grit to "rough it up" a bit, then try painting it again. Has anyone ever painted the inside of a V-Stream windscreen? Any other thoughts or ideas as to why the paint didn't stick the first time?
if the screen is unblemished, have you thought about just using vinyl? Using a quality vinyl in the color of your choosing will give you the same look and the ability to just remove it at anytime or change it. I would NOT use 600 grit, that is pretty rough, instead use 1500. Paint may need the scoring to give it something to adhere to. Only draw back is if it doesn't stick, you get to polish it back crystal clear.

If you decide to try the vinyl route, works best to take a spray bottle, one or two drops of dish soap, fill up the rest of the way with water, and then shake it up. Clean windshield, mist windshield with the spray bottle, lay on the vinyl, and use a credit card or a squeegee to push the water and air out. Good grief I forgot about doing this back in the day. Just came up with a cool idea I may do to mine now. Thanks!!!
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post #7 of 14 (permalink) Old 06-15-2020, 04:57 PM
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if the screen is unblemished, have you thought about just using vinyl? Using a quality vinyl in the color of your choosing will give you the same look and the ability to just remove it at anytime or change it. I would NOT use 600 grit, that is pretty rough, instead use 1500. Paint may need the scoring to give it something to adhere to. Only draw back is if it doesn't stick, you get to polish it back crystal clear.

If you decide to try the vinyl route, works best to take a spray bottle, one or two drops of dish soap, fill up the rest of the way with water, and then shake it up. Clean windshield, mist windshield with the spray bottle, lay on the vinyl, and use a credit card or a squeegee to push the water and air out. Good grief I forgot about doing this back in the day. Just came up with a cool idea I may do to mine now. Thanks!!!
I have no experience, but I have read that it wonít stick any better than paint. Iíd love for someone to try it so we could have first hand knowledge.

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post #8 of 14 (permalink) Old 06-15-2020, 09:19 PM
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When I painted the inside of my cut down FZ-1 windshield I used Krylon spray on for plastic from Home Depot. Never had an issue with it.

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post #9 of 14 (permalink) Old 06-15-2020, 10:38 PM Thread Starter
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When I painted the inside of my cut down FZ-1 windshield I used Krylon spray on for plastic from Home Depot. Never had an issue with it.
Thatís the paint I used on the V-Stream. I think Iíll mess with it over the weekend. I think Iíll sand the inside with some 3000 grit paper then paint it. Hopefully the paint will fill the ďscratchesĒ so they wonít be visible from the front.

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post #10 of 14 (permalink) Old 06-16-2020, 09:56 PM
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At the risk of sounding like I've been living under a rock, what is the purpose of painting a motorcycle windscreen? Is it just for the appearance or is there a functional aspect?

Motorcycle Papa, '18 FJR1300A, '05 WR450F, '97 KTM 620RXC/e

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