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patreilly43(at)hotmail.co
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 Posted: Sun Mar 30, 2008 2:13 pm Post subject: New windshield material |
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Who asked a month ago about a new plexiglass material supplied out of Ohio? I bought a sheet, have some experience to share. And, I can't believe I can't find any of the paperwork on the material and don't remember the supplier .
do not archive
Pat Reilly
[quote][b]
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andynfultz(at)bellsouth.n
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| Posted: Sun Mar 30, 2008 11:04 pm Post subject: New windshield material |
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andynfultz(at)bellsouth.n
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| Posted: Mon Mar 31, 2008 11:49 am Post subject: New windshield material |
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Pat,
I see that the message I sent earlier was blank, so here it is again.
That was me. I asked about the use of PTEG vs Lexan. Someone here had mentioned that product. It is considerably less expensive than Lexan and is supposed to have about the same properties. If you want to e-mail me direct it is andynfultz(at)bellsouth.net (andynfultz(at)bellsouth.net) . Thanks
Andy F.
[quote] --
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patreilly43(at)hotmail.co
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| Posted: Mon Mar 31, 2008 11:52 am Post subject: New windshield material |
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Andy, Your e-mail came through blank. I found the paper work from K-Mac from, not Ohio, but MI. The product is PETg Vivak. I used the .080 thick sheet to build a windshield. I am building a 2 piece windshield. The cabin top is made of .125 tinted plexi, the windshield .080 clear Vivak. I will overlap and rivet the 2 pcs at the crossbar at top of windshield portion. The Vivak is indestructible. I cut it with sheetmetal shears. It is softer than regular acrylic plexiglass. And, formable at 200 degreees F. It appears to scratch easier. I don't know how easy it is to polish scratches out of. I would guess it would not polish as easy as acrylic as it is softer and the scratches are deeper. It is very flexible, not as stiff as acrylic. Would I recommend it? So far so good but school isn't out yet on the servicabilty of the material. Very forgiving to work with. You can't fracture it like acrylic of Lexan.
[quote][b]
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dave
Joined: 22 Sep 2006
Posts: 1382
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| Posted: Mon Mar 31, 2008 1:25 pm Post subject: Re: New windshield material |
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| Quote: | It is very flexible, not as stiff as acrylic. Would I recommend it? So far so good but school isn't out yet on the servicabilty of the material. Very forgiving to work with. You can't fracture it like acrylic of Lexan.
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You can successfully use .090 to .125 in one piece to do your Kitfox. The Pre IV models have a steeper windshield and I would stick to .060 to .080 " lexan. It won't crack if you treat it right. Cutting with tin snips works but you fracture the edges and MUST clean them up or cracks can propagate from the edges and especially at the top where the windshield bends around in a complex bend. you can use a hand plane to true up the straight edges and take of the sharps edges. On the inside and outside corners just polish up the edges with 220 working up to 400 or better . No nicks = longer life with no cracks. You can use a heat gun on corners are top to relieve stress as well.
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andynfultz(at)bellsouth.n
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| Posted: Mon Mar 31, 2008 7:20 pm Post subject: New windshield material |
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Dave,
Are you refering to the PETG material in your reply?
Andy F.
| Quote: | It is very flexible, not as stiff as acrylic. Would I recommend it? So
far so good but school isn't out yet on the servicabilty of the material.
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Very forgiving to work with. You can't fracture it like acrylic of Lexan.
You can successfully use .090 to .125 in one piece to do your Kitfox. The
Pre IV models have a steeper windshield and I would stick to .060 to .080 "
lexan. It won't crack if you treat it right. Cutting with tin snips works
but you fracture the edges and MUST clean them up or cracks can propagate
from the edges and especially at the top where the windshield bends around
in a complex bend. you can use a hand plane to true up the straight edges
and take of the sharps edges. On the inside and outside corners just polish
up the edges with 220 working up to 400 or better . No nicks = longer
life with no cracks. You can use a heat gun on corners are top to relieve
stress as well.
--------
Rotax Dealer, Ontario Canada
Flying Videos and Kitfox Info
http://www.cfisher.com/
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=173970#173970
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dave
Joined: 22 Sep 2006
Posts: 1382
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| Posted: Mon Mar 31, 2008 11:51 pm Post subject: Re: New windshield material |
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I was referring to the use of LEXAN only. I don;t think PETG is as strong or as abrasive resistant as Lexan is . Lexan is a Trademark name of GE and polycarbonate. LExan is better UV resistant that PETG
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patreilly43(at)hotmail.co
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| Posted: Tue Apr 01, 2008 6:27 am Post subject: New windshield material |
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Andy, Sorry about that. Yes, I was referring to the PETG material.
Do not archive
Pat Reilly
| Quote: | From: andynfultz(at)bellsouth.net
To: kitfox-list(at)matronics.com
Subject: RE: Re: New windshield material
Date: Mon, 31 Mar 2008 22:16:58 -0500
--> Kitfox-List message posted by: "Andy Fultz" <andynfultz(at)bellsouth.net>
Dave,
Are you refering to the PETG material in your reply?
Andy F.
--> Kitfox-List message posted by: "dave" <dave(at)cfisher.com>
> It is very flexible, not as stiff as acrylic. Would I recommend it? So
far so good but school isn't out yet on the servicabilty of the material.
Very forgiving to work with. You can't fracture it like acrylic of Lexan.
>
>
>
You can successfully use .090 to .125 in one piece to do your Kitfox. The
Pre IV models have a steeper windshield and I would stick to .060 to .080 "
lexan. It won't crack if you treat it right. Cutting with tin snips works
but you fracture the edges and MUST clean them up or cracks can propagate
from the edges and especially at the top where the windshield bends around
in a complex bend. you can use a hand plane to true up the straight edges
and take of the sharps edges. On the inside and outside corners just polish
up the edges with 220 working up to 400 or better . No nicks = longer
life with no cracks. You can use a heat gun on corners are top to relieve
stress as well.
--------
Rotax Dealer, Ontario Canada
Flying Videos and Kitfox Info
http://www.cfisher.com/
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=173970#173970
>
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