Rock shield out of old plxiglass window - Fiberglass RV


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Old 07-01-2016, 08:30 AM   #1
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Name: Sylvio
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Rock shield out of old plxiglass window

I can't find the info I read in the Forum about making a see-through rock shield for my front window. Any hints?
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Old 07-01-2016, 10:00 AM   #2
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Don't use plexiglass as it's a soft plastic and will look pretty bad within a year. Use Lexan (used for vehicle headlight lenses) and it will stand up far better.
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Old 07-01-2016, 03:40 PM   #3
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Originally Posted by Uncle Cereal View Post
I can't find the info I read in the Forum about making a see-through rock shield for my front window. Any hints?


Here's a couple of photos:



We used a scrap of generic Lexan, small bolts with acorn nuts on the front side (kind of decorative), and we did use white butyl tape between the edge of the Lexan and the fiberglass to keep dirt, leaves, twigs, etc., from filling in the admittedly small gap. We put the Lexan on the front side of the fiberglass...I know Lexan is bulletproof...never heard that fiberglass was.
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Peanut 10 2015 to 6 2016 054.JPG   Peanut 10 2015 to 6 2016 055.JPG  

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Old 07-01-2016, 03:43 PM   #4
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We LOVE having that extra window. We took a small, cheap, straight (no curved ends) extendible curtain rod, put extra plastic ends on it, and taped it to the length that exactly holds up the shield AND lets us fully open the front window (they are one-piece jalousies...don't know what else to call them; they don't open very far, maybe 8 inches).

We store the rod under the rock shield when it's closed up for traveling or bad weather.

We fastened it with a double-hinged hasp and a carabiner. It works really well...and took us dozens of hours of thinking, sketching, shopping, and horsing around to get it all together.
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Old 07-01-2016, 03:47 PM   #5
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Use LEXAN
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Old 07-01-2016, 03:48 PM   #6
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Originally Posted by Kai in Seattle View Post
We LOVE having that extra window. We took a small, cheap, straight (no curved ends) extendible curtain rod, put extra plastic ends on it, and taped it to the length that exactly holds up the shield AND lets us fully open the front window (they are one-piece jalousies...don't know what else to call them; they don't open very far, maybe 8 inches).

We store the rod under the rock shield when it's closed up for traveling or bad weather.

We fastened it with a double-hinged hasp and a carabiner. It works really well...and took us dozens of hours of thinking, sketching, shopping, and horsing around to get it all together.
Looks good!
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Old 07-01-2016, 04:20 PM   #7
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Use LEXAN


RIGHT.




Charlie Y: Thanks!
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Old 07-01-2016, 05:44 PM   #8
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Lexan is a trade name for polycarbonate from one maker of it. You can use any brand of polycarbonate you want to, it does not have to be the Lexan brand.

Here is an easy to understand discussion on the differences between polycarbonate and acrylic. It might help you make up your mind on which product to choose for a rock shield. Nice to have a little deeper understanding when making choices for a specific application of use.
How Are Polycarbonate & Acrylic Different | The Plastic People : : Blog
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Old 07-01-2016, 07:21 PM   #9
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My question was not about what to choose between plexiglass and Lexan, although that discussion is interesting. I guess I wasn't clear. I'm looking for info about people who used their old windows, whatever transparent material they are made of, as a rock shield instead of the fiberglass one.

Looking at my old window today, it's not as high as the fg shield and won't do. I'm thinking of using my fg rock shield but cuting an opening at the bottom of it to see through the camper.

I don't feel safe not seeing what's coming behind...

Thanks!
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Old 07-01-2016, 07:40 PM   #10
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I don't feel safe not seeing what's coming behind...

Thanks!
I'd be more concerned about what's coming at me in front.
Never tell your insurance company that you were looking in the rear view mirror. I did, and it became my fault.
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Old 07-01-2016, 10:59 PM   #11
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I'd be more concerned about what's coming at me in front.
Never tell your insurance company that you were looking in the rear view mirror. I did, and it became my fault.
Excellent advice...
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Old 07-02-2016, 03:09 AM   #12
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I'm thinking of using my fg rock shield but cuting an opening at the bottom of it to see through the camper. I don't feel safe not seeing what's coming behind...
Sorry, a bit off topic but I don't understand all the posts I see like this, along with cameras, that's what your side mirrors are for, learn to use them. 95% eyes forward for what you're doing and 5% checking mirrors. Does it really make any difference if someone comes up on you and is hanging just off your bumper waiting for an opening to pass you? No, stay steady and let them do their thing. The same as you would be doing with the rolls being reversed. Any move you make because some ones on your tail may end up being the cause of an accident. Just a hint, if a vehicle is close to you and you can't see it from the mirrors, look for a shadow on the road. Your own shadow can tell you when you have clearance if you're passing. Saved me when a CHP was 3' behind my bobtail dump truck....stopped going for the last 6 gears and stayed at 55mph .
If you want to do that mod to feel better go for it but if you were coming up behind me I certainly wouldn't be worried if you were close behind me, it's your move, I'm staying right where I am.
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Old 07-02-2016, 07:57 AM   #13
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Point well taken, Dave. The idea is that seeing in the back increases the awareness of what's going on in my surrounding. That's important to know when one needs to react to what happens on the road.

Can that awareness be gained just with side mirrors? Very possibly. Is the increased awareness worth modifying my shield? Maybe or maybe not. Truck drivers sure don't see behind them. Thanks for making me think.
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Old 07-02-2016, 09:09 AM   #14
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If plexiglass has been used for years on the front window without major breaks, etc. it should work fine for the gravel guard. My 1988 went more than 15 years with a front plexiglass window before I put guard over it. I bought the gravel guard from Scamp, mainly because I wanted to do away with the front curtains and provide a darker interior during sleeping hours. I have the gravel guard setup to be used as a front window awning during the day. Win/Win.


Since I never travel/tow in a perfectly straight line for more than a quarter mile or so, the need to see through the trailer to traffic behind me is not needed. Curves in the road and mirrors let me see everything I need to see. YMMV
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