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Lexan, anything i should watch out for ?
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Author:  tanshi [ Wed Oct 30, 2013 12:48 pm ]
Post subject:  Lexan, anything i should watch out for ?

IM looking at replacing all the non winscreen windows in a jeep to Lexan.

Anything i should watch out for.? also does anything know a cheap hookup or at least what a good price is?

thanks

Author:  shep [ Wed Oct 30, 2013 1:32 pm ]
Post subject:  Re: Lexan, anything i should watch out for ?

Polycarbonate is what you want, lexan is brittle and can shatter

Author:  henno [ Wed Oct 30, 2013 1:38 pm ]
Post subject:  Re: Lexan, anything i should watch out for ?

shep wrote:
Polycarbonate is what you want, lexan is brittle and can shatter


Aren't they one and the same? i.e. Lexan is a type of polycarbonate?

I know what you are saying though. I have had lexan in drag cars before, but a drag car doesn't get knocked around anywhere near as much as a 4x4. Perhaps acrylic would be a better choice?

Author:  shep [ Wed Oct 30, 2013 1:41 pm ]
Post subject:  Re: Lexan, anything i should watch out for ?

Sorry gotta bit mixed up. Lexan is a brand of polycarbonate.

Author:  tanshi [ Wed Oct 30, 2013 1:52 pm ]
Post subject:  Re: Lexan, anything i should watch out for ?

lexan is used in bullet proof prison walls in QLD

Author:  stockman [ Wed Oct 30, 2013 2:14 pm ]
Post subject:  Re: Lexan, anything i should watch out for ?

There would be different grades.
I'm sure the bullet proof stuff would cost a fuck load.

Author:  tanshi [ Wed Oct 30, 2013 2:15 pm ]
Post subject:  Re: Lexan, anything i should watch out for ?

yes, its also 12-16mm thick. the point is its not fragile

Author:  henno [ Wed Oct 30, 2013 2:22 pm ]
Post subject:  Re: Lexan, anything i should watch out for ?

tanshi wrote:
yes, its also 12-16mm thick. the point is its not fragile


Definitely not fragile. But it's not particularly "bendy".

Compared to glass it is superior in almost every way, however (price being the most obvious difference).

Author:  shep [ Wed Oct 30, 2013 2:29 pm ]
Post subject:  Re: Lexan, anything i should watch out for ?

It scratches very easily and if on a road car can cause issues with road crash rescue

Author:  tanshi [ Wed Oct 30, 2013 2:40 pm ]
Post subject:  Re: Lexan, anything i should watch out for ?

Its for the race jeep (unregisteres), it wont be on the drivers door or passenger door so no issues with crash rescue.

Author:  want33s [ Wed Oct 30, 2013 3:58 pm ]
Post subject:  Re: Lexan, anything i should watch out for ?

Poly scratches VERY easily and will be so bad that eventually you won't see clearly through it.
Check out old boat windscreens.

Author:  tanshi [ Wed Oct 30, 2013 4:05 pm ]
Post subject:  Re: Lexan, anything i should watch out for ?

what about a layer of clear contact over it that can be replaced every few months

Author:  zooky08 [ Wed Oct 30, 2013 4:08 pm ]
Post subject:  Re: Lexan, anything i should watch out for ?

Yep scratches easy. I bought a front poly window for a sierra few years ago.
was about $200 so quite expensive. Destroyed it by putting my window wipers on.

Author:  atari4x4 [ Wed Oct 30, 2013 4:13 pm ]
Post subject:  Re: Lexan, anything i should watch out for ?

tanshi wrote:
what about a layer of clear contact over it that can be replaced every few months


http://www.quickpeel.com.au/

Author:  tanshi [ Wed Oct 30, 2013 4:34 pm ]
Post subject:  Re: Lexan, anything i should watch out for ?

atari4x4 wrote:
tanshi wrote:
what about a layer of clear contact over it that can be replaced every few months


http://www.quickpeel.com.au/


sounds expensive

Author:  SierraDan [ Wed Oct 30, 2013 4:50 pm ]
Post subject:  Re: Lexan, anything i should watch out for ?

Lexan is used in many offroad cars.

I think i saw the V8 super cars peel their windscreens off a couple of times during Bathurst.

Author:  Gwagensteve [ Wed Oct 30, 2013 5:12 pm ]
Post subject:  Re: Lexan, anything i should watch out for ?

Polycarbonate isn't very UV stable. We found this out with the trolley tug, which had polycarbonate flares for a while until they pretty much exploded from UV exposure. There is coated product which is better but IIRC it's only coated on one side. There is also product with a scratch resistant coating, again, I think only on one side. The scratch resistant coating adds quite a lot to the cost too.

Window tint film is quite scratch resistant, so some light film on the inside will help if you use scratch resistant polycarb with the scratch resistant side on the outside.

Just some thoughts. Poly windows look pretty rough quick in a car that goes bush.

Steve.

Author:  tanshi [ Wed Oct 30, 2013 5:14 pm ]
Post subject:  Re: Lexan, anything i should watch out for ?

Thanks Steve very useful

Author:  steve125 [ Wed Oct 30, 2013 5:24 pm ]
Post subject:  Re: Lexan, anything i should watch out for ?

paid $280 18 months ago to replace the sides and rear window on the Sierra, didn't really shop around so could probably be got cheaper, scratches very easily, the rear is about 4mm or so and is held in by the rubber seal and is quite solid, the sides were only about 3mm and the way they mount means they flex a fair bit.

Author:  tanshi [ Thu Oct 31, 2013 8:25 am ]
Post subject:  Re: Lexan, anything i should watch out for ?

i wonder about clear ish window tint film for outside where its most likely to get scratched.

Author:  Blakey [ Thu Oct 31, 2013 10:35 am ]
Post subject:  Re: Lexan, anything i should watch out for ?

just get some clear UV window tint solves the UV problem and its clear so you can see through it

Author:  shep [ Thu Oct 31, 2013 11:34 am ]
Post subject:  Re: Lexan, anything i should watch out for ?

Why not just weld in some mesh and don't worry about windows?

Author:  tanshi [ Thu Oct 31, 2013 12:47 pm ]
Post subject:  Re: Lexan, anything i should watch out for ?

that has been considered aswell. just looking at all options

Author:  just_cruizin [ Fri Nov 01, 2013 6:49 am ]
Post subject:  Re: Lexan, anything i should watch out for ?

What are windscreens for crappy jeeps worth??

Author:  tanshi [ Fri Nov 01, 2013 6:53 am ]
Post subject:  Re: Lexan, anything i should watch out for ?

Cheap ish.

Author:  just_cruizin [ Fri Nov 01, 2013 3:53 pm ]
Post subject:  Re: Lexan, anything i should watch out for ?

Why bother then, mine took a hell of a lot of punishment before it was unusable

Author:  tanshi [ Fri Nov 01, 2013 4:00 pm ]
Post subject:  Re: Lexan, anything i should watch out for ?

we wouldnt be swapping out the windscreen any way. only the 3 windows down the sides and the rear tailgate window.

alot of the reason we considered it is weight. 30 kgs of glass up that high is a fair bit.

we might just pull it out and have thin plastic sheet to press stud on and keep the weather out.

Author:  just_cruizin [ Fri Nov 01, 2013 7:16 pm ]
Post subject:  Re: Lexan, anything i should watch out for ?

Just ditch it and don't have anything

Author:  kenn [ Sat Nov 02, 2013 6:27 pm ]
Post subject:  Re: Lexan, anything i should watch out for ?

This is the stuff I used
Image

To do this
Image

Got this stuff from Bunnings a few years ago so I don't know if they still stock it.
I used the clear stuff on the top to let some light in and the grey on the sides.

Author:  Zook_Fan [ Mon Nov 04, 2013 7:13 am ]
Post subject:  Re: Lexan, anything i should watch out for ?

It's a rally, just run it. If you're looking out the back you're doing it wrong

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