Making a lexan windscreen and turtle deck

[War Eagle]

I have seen them done both ways. I have also seen them left off completely.

[SkyPirate]

Sabic Plastic's out of Chicago has .060 x48"x96" bronze/clear/smoked lexan ..the bronze is $89.16..cost of shipping was $39 UPS it can be rolled for shipping

my response from Sabic:

Subject: Bronze Lexan


.
Chase,

Your e-mail was forwarded to me from our manufacturing site. We do stock .060” x 48” x 96” bronze Lexan in our Chicago location and can roll & ship for ground shipping. The charges you would incur would be $89.16 for the sheet plus tax and approximately $39 packaging & shipping.

Thanks,
Tom

Tom Mareschal
Branch Manager
Polymershapes

SABIC Polymershapes LLC
12934 Hollenberg Drive
Bridgeton, MO 63044
T 314-738-0088
F 314-738-0095
M 314-369-6954
tom.mareschal@sabic-ip.com
www.sabicpolymershapes.com

Polymershapes is the world’s largest distributor of plastic sheet, rod, tube, film, and associated products, with 70+ years of industry-leading heritage.
· Same-day delivery from the industry’s largest inventory – thousands of quality products from trusted manufacturers
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[LSaupe]

Thought I would shoot this out for feedback.

Just pulled off the paper on my winshield to find crazing in the wing root corners (about 4" long). It is acrylic and measures out at an even 0.100".

Can this be flown as is in the near term, or is crazing an immediated need for replacement?

If needed, sounds like Lexan at 1/16" would suffice as a good replacement?

Larry

[avidflyer]

I don't think I would use a cracked pre molded windshield. Plexiglass cracks, unlike lexan. I would use .090 lexan if your plane will do 100 MPH or more, otherwise .060 should work for slower speed planes. I used .060 in all my Avid Flyers. The MK IV with the Jabiru would start to buckle back at top end, about 100 MPH. Jim Chuk

[LSaupe]

Thanks for the feedback. This is a Model III and wasn't (isn't) a premolded windshield (in case that makes a difference).

[t j]

Mine is .093 in. thick. It has been on the plane for 16 years now. The wing root corners crazed after about the first 5 years. I splashed gas on it near the bottom front a year ago and it cracked about 3 inches.
I have a new sheet of 1/16 in (.062) I plan to replace it with.

I'll get a photo today for you.

[avidflyer]

When you said you pulled off the paper on the windshield and found crazing, I right away thought of a premolded windshield made from plexiglass. Lexan will often craze after time in that tight bend, but lexan doesn't crack like plexiglass would. Being as your windshield is already fit and mounted, it's easy to take it off and use it as a pattern for the new one. Probably will be ok for a while as is though. Maybe a picture or two would help give us a better idea on the right answer. :-) Jim Chuk

[kmach]

Chase, are you using the .0625 bronze lexan for the windshield ?

[t j]

LSaupe, here's my crazed windshield. This is the .093 thickness lexan. The crazing at the wing root corners has been there about 10 years. The gasonile crack happened last year. I plan to replace it with 1/16th In. thickness in the next few days.

Crazed windshield 1.jpg

Crazed windshield 2.jpg

Gasoline Splash cracked it here. This crack has moved up about an inch in the past year.
crazed windshield 3.jpg

[jtpitkin06]

I still have a new in the box clear windshield up for grabs. Read the story in classified.
John Pitkin