windscreen safety, glass vs plexi - LotusTalk - The Lotus Cars Community
 
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post #1 of 7 (permalink) Old 04-05-2017, 04:17 PM Thread Starter
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windscreen safety, glass vs plexi

I am contemplating plexi. I do worry when the windscreen collapses in a rollover I will be decapitated
?
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post #2 of 7 (permalink) Old 04-05-2017, 04:38 PM
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The Rollbar behind your head should protect you as the windshield header is not strong enough - with glass or plexi. It can collapse with either material. I've seen several cars that have rolled at the track and everyone walked away...your results may vary.

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post #3 of 7 (permalink) Old 04-05-2017, 04:54 PM
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Glass windshields though they don't shatter, they do throw glass shards when broken, Lexan screens are basically indestructible (and lighter!)

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post #4 of 7 (permalink) Old 04-05-2017, 05:28 PM
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Please don't ever use plexiglass for anything other than a screen door. Polycarbonate is the way to go. Name brands are Lexan, Makrolon and a few others. They are virtually indestructible and can even be bent with pressure(brake) or heat. plexiglass will shatter and end up in your face if a rock hits it.
Now you can even get hardcoated poly that will withstand wiping and cleaning.

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post #5 of 7 (permalink) Old 04-05-2017, 07:34 PM
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I've definitely heard of the dangers of Lexan windshields popping off in a collision and decapitating, or at least injuring passengers, but have never seen or read about actual incidents (granted I've never looked for this info). Do it at your own risk I suppose!

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post #6 of 7 (permalink) Old 04-05-2017, 07:45 PM Thread Starter
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I am not concerned of it popping off. Nor andy structural significance.
Glass disintegrates, plexi/plastic/vynil/nylon any composite/polymer linear or crosslink are strong
I am concerned with the screen lowering toward face in a rollover. Where glass would fall apart, plexi would remain rigid
Any documented cases of plexi hurting its occupants. I suspect it would catch (scrape) on the ground before protruding onto ones head
?
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post #7 of 7 (permalink) Old 04-11-2017, 09:00 AM Thread Starter
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It looks like I will add an extra section to the roll bar, which will keep the plexi off me
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