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Old 02-27-2010, 08:05 PM   #1
romanlynch
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Default lexan question

i searched for lexan windshields, but didnt really see stuff that pertains to what im looking for. i read the DIY windshield thread, which is informative since thats what im looking to replace. however, what im looking for is any specific place to buy one, or just the materials to make one.

since im virginal in this () area any input is appreciated. fwiw its a 02 wrx, DD but as soon as i get $ to get a beater im stripping the interior to hopefully make a "street legal" track car.

im not too concerned with the price, unless its just recockulously more than a glass windscreen.
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Old 02-28-2010, 12:45 PM   #2
boost junkie
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I ordered my lexan from Shields, it's precut and formed like OEM glass. It's also anti scratch and anti fog coated.

http://www.racingshields.com/
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Old 02-28-2010, 12:59 PM   #3
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whatever you go with make sure you get lexan with an anti-scratch coating. With uncoated lexan it will need to be replaced after a year or two.
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Old 02-28-2010, 02:44 PM   #4
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Percy's speed glass makes lexan of different thicknesses. No subi dirrect fit at this time
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Old 02-28-2010, 08:34 PM   #5
romanlynch
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cool, thanks guys. i did read that it can "yellow" over time, is that a real issue? the other thing, would i have to install a support beam in the middle of the windshield to secure the lexan?

Last edited by romanlynch; 02-28-2010 at 08:54 PM.
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Old 02-28-2010, 09:07 PM   #6
RaceFaceXC
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high quality stuff shouldn't yellow but the sun can cause it to craze over time... usually takes a cpl years, at least.
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Old 03-02-2010, 09:51 AM   #7
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The coating you want is MR10. Any plastic's supplier should be able to get coated LEXAN. Expect to pay around 300 dollars for a 36" x 60" sheet (enough to do the windshield). Use 1/4" for the windshield.

You can save some money by getting non-coated rear and side windows. 150 dollars should buy you an 8x4 sheet of the noncoated stuff.


-Duncan
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Old 03-02-2010, 06:28 PM   #8
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Quote:
Originally Posted by dunk View Post
The coating you want is MR10. Any plastic's supplier should be able to get coated LEXAN. Expect to pay around 300 dollars for a 36" x 60" sheet (enough to do the windshield). Use 1/4" for the windshield.

You can save some money by getting non-coated rear and side windows. 150 dollars should buy you an 8x4 sheet of the noncoated stuff.


-Duncan
Don't you only need 3/16 on the front windshield for most racing sanctions?

-Garrod
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Old 03-02-2010, 10:21 PM   #9
romanlynch
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theres other threads that say 1/4" but it will be DD so id prolly go thicker anyways
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Old 03-02-2010, 10:29 PM   #10
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Quote:
Originally Posted by Wintershredder View Post
Don't you only need 3/16 on the front windshield for most racing sanctions?

-Garrod
Most sanctioning bodies require 3/16" MINIMUM thickness for a windsheild. The problem is that 3/16" thick lexan from most sources is slightly on the thin side, making it illegal.
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Old 03-03-2010, 06:20 AM   #11
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FWIW, I wouldn't replace the glass with LEXAN on a daily driver.

-Duncan
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Old 03-03-2010, 08:43 AM   #12
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Quote:
Originally Posted by Wintershredder View Post
Don't you only need 3/16 on the front windshield for most racing sanctions?

-Garrod
NASA only requires 3/16" but SCCA requires 1/4". Better to use the thicker stuff and be legal everywhere, it's only a tiny bit heavier/more expensive.
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Old 03-03-2010, 06:16 PM   #13
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Quote:
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FWIW, I wouldn't replace the glass with LEXAN on a daily driver.

-Duncan
im always open to opinions, specially in topics like this where i dont really know anything about said topic
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Old 03-03-2010, 06:30 PM   #14
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Quote:
Originally Posted by boost junkie View Post
NASA only requires 3/16" but SCCA requires 1/4". Better to use the thicker stuff and be legal everywhere, it's only a tiny bit heavier/more expensive.
Thanks Dan. I will be putting in some 1/4". Might as well be legal for everything and feel safer to boot.

-Garrod
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Old 03-03-2010, 06:39 PM   #15
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holy cow, just got an pricing email from racingshields (linked above) $465 for 1/4" front windshield and $600 with the anti-fog coating. hrmmm, i think ill look into regular glass an compair.
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Old 03-03-2010, 07:15 PM   #16
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Quote:
Originally Posted by romanlynch View Post
holy cow, just got an pricing email from racingshields (linked above) $465 for 1/4" front windshield and $600 with the anti-fog coating. hrmmm, i think ill look into regular glass an compair.
Believe it or not that's cheaper than OEM glass.
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Old 03-03-2010, 07:25 PM   #17
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But probably 3 times the price of decent aftermarket glass.

-Duncan
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Old 03-07-2010, 11:10 PM   #18
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Side note:

I used some large lexan plates to shield some electrical stuff on a design I did at work and we ran into a issue with the Loctite used to hold the fasteners causing the lexan to develop cracks around the mounting holes. Evidently this is common when the two come in contact.
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Old 03-07-2010, 11:10 PM   #19
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Side note:

I used some large lexan plates to shield some electrical stuff on a design I did at work and we ran into a issue with the Loctite used to hold the fasteners causing the lexan to develop cracks around the mounting holes. Evidently this is common when the two come in contact.
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Old 03-08-2010, 12:31 PM   #20
romanlynch
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yea i also read not to use rivets for that reason too. it seems that the self locking nuts (the ones with the plasticy stuff on the end) are the ones u wanna go with.
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