replacing rear window with perspex

Post by **Bartso** » Sun Dec 11, 2005 4:59 pm

hey guys is it as easy as i think it is just cut it out the same shape and put in i want to replace it with perspex cause i want to run my harnesses through the perspex window and onto the roll bars

also does anyone know where i could get some in brisbane

Post by **"CANADA"** » Sun Dec 11, 2005 5:05 pm

legalitys?

Post by **antt** » Sun Dec 11, 2005 6:55 pm

mad_landie wrote:legalitys?

a perspex window is the least of bartso's worries

Post by **bilby** » Sun Dec 11, 2005 7:20 pm

theres a place on lytton road that sells perspex . just dont know what there called !

there just past the roundabout at lytton/ junction road if that helps

Post by **Dozoor** » Sun Dec 11, 2005 8:11 pm

Don,t use perspex - I think lexan or somthing is the go its actually legal
im really wasted at the moment but i know its not perspegs , iys not cheap but it dosnt break up the same :drinking:

mmmmm xmas

Larry

Post by **nicbeer** » Mon Dec 12, 2005 1:45 pm

Beware also, i think perspex is the one that goes yellow in the sunlight over time. I do not think lexan does this.

I got a quote for perspex 4mm 700x400x2 for $64

cheers

Post by **JeSTeROCK** » Mon Dec 12, 2005 4:20 pm

lexan is very expensive, used in aircraft
Will work well for your application

Perspex is no good on 4wd's, it breaks and cracks quite easily

Post by **Area54** » Mon Dec 12, 2005 4:28 pm

I don't know of a supplier near to you Bartso, I get all of my plastics from E-Plas - parramatta road slacks creek.

Exterior polycarbonate (Lexan) will have a UV coating on one side (faces out), this is important, or else the polycarb will weaken and discolour in sunlight.

Acrylic (perspex) will 'craze' (small cracks) over a period of time exposed to UV light in an exterior application.

Polycarb is the choice in this application, 4.5mm thick is the go.

Post by **bru21** » Mon Dec 12, 2005 6:28 pm

mate i would not use perspex. the lexan is a trade name for a plastic known correctly as polycarbonate. polycarbonate is perfect and is shatter proof (I have hammer and various impact tested it often). If you buy it from the right place it will be ok price wise i would imagine. When i get a moment i will post som suppliers names - might even get a free sample!

polycarbonat is not fuel resistant and is attacted by dogs piss (don't ask how i know that). I have strips here about 150mm wide (the stuff they use on shop roll down security screens

cheers bru

Post by **MARKx4** » Mon Dec 12, 2005 6:34 pm

We had to use pollycarbonate(lexan) in all the windows when we did the extension of long bay jail. So that should prove that this stuff is strong and can stand uv light.

I tried to fire a 3"nail framing gun through this stuff at point blank range and didnt go all the way through

Post by **mickyd555** » Mon Dec 12, 2005 6:39 pm

is polycarbonate the same gear that they use for windows on fibreglass canopys, or is that real glass??

Post by **Bartso** » Tue Dec 13, 2005 8:06 pm

ok thanks bru a dealer would be good also will they have to cut it out for me i also want holes for my harnesses will they cut that out as well

Post by **MARKx4** » Tue Dec 13, 2005 8:09 pm

Bartso wrote:ok thanks bru a dealer would be good also will they have to cut it out for me i also want holes for my harnesses will they cut that out as well

You can drillandcut this stuff with a jig saw, just use a hack saw blade.

Post by **gqswb** » Tue Dec 13, 2005 8:22 pm

I think it only legal for side glass not front or rear of the car???? maybe??

Post by **runnin4life** » Tue Dec 13, 2005 8:40 pm

gqswb wrote:I think it only legal for side glass not front or rear of the car???? maybe??

i thought the front would have been the most important being the windscreen

i thought you would need the special laminated glass so when it smashes it holds together

instead of crumbling and flying into your face wilst doing 110km/h on the free way

Post by **gqswb** » Tue Dec 13, 2005 8:51 pm

Thats what i mean only legal for side glass, polycarbonate that is.

Post by A1 » Tue Dec 13, 2005 9:18 pm

Yeh Bartso the lexan (polycarbonate) is the go and as Tom said atleast 4.5 mm.... ..after i had the mishap in my POS , thats what i used albeit only 3mm as thats all I could scrape up from my work and it flexes a bit too much and can sometimes pop out ....I also have it on the pass side front slider winda ...only dramas with using the lexan is that if used as i have side windows it scratches up easily .....

But in your case if you scratch up your rear window .......well your rig will be pretty farked up anyway so it wont bother ya

Dan

Post by **chimpboy** » Tue Dec 13, 2005 9:52 pm

Just wondering, could you put some light tinting material on it afterwards to protect from fuel etc and/or scratches? Some of the tinting stuff is very tough... (although some isn't...)

?

Jason

Post by **bru21** » Tue Dec 13, 2005 10:31 pm

yes you could tint it, i fail to see the benefit though. cutting is pretty easy similar to rigid pvc cutting wise. didn't get a chance to look it up today, production fark ups at work l

ooks like the lab will be running hot till mid tomoz at least.

it is highly impact resistant even bullet proof when thick enough. they make high end roof sheeting out of it too. i would worry about it popping into the cab if it was on a high speed front screen without any fastners!

it does scratch easily but you get that with all plastics.

Post by **just cruizin'** » Fri Dec 16, 2005 1:53 pm

Rear window replacement with Polycarbonate should be OK, measure the thickness of the current glass one and try to get the same thickness so you can reuse the rubber. Most specialty plastic place should be able to supply and cut to shape if you can provide them with a drawing. For anyone on the northside Plastic Engineering at Brendale I think supply it. Lots of places around check the yellow pages.

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replacing rear window with perspex

replacing rear window with perspex

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