1/8" thick lexan...Can I use this thickness for a windshield on my '87 interstate? - Steve Saunders Goldwing Forums

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post #1 of 18 (permalink) Old 10-20-2013, 02:06 PM Thread Starter
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1/8" thick lexan...Can I use this thickness for a windshield on my '87 interstate?

Hello! I have an opportunity to pick up a piece of lexan for dirt cheap. Problem is its 1/8" thick and the current windshield on my bike is about a 1/4" thick. Is it possible to safely use this thickness?

Thanks!
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post #2 of 18 (permalink) Old 10-20-2013, 02:41 PM
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I'm thinking not because of the flexing it will do at high speeds and at crosswinds. However, if you add a brace across it that may stiffen it enough. The next concern would be rocks hitting it at freeway speeds. Not sure about that..

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post #3 of 18 (permalink) Old 10-20-2013, 02:59 PM Thread Starter
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Awesome thanks for the reply! I was thinking I could brace it across with just another strap. The sheet im picknig up is 1/8" thick, 62"x47" 9030/9034 lexan plexiglass for $30. On jpcycles.com (I did the research afterwards of course) the windshields that are coming up for my bike are 3/16" and my current windshield is 3/16" or 1/4" measured at a quick glance. On that note, anyone make a windshield and use the old shield as a template but make it much larger? Im thinking of adding some height to mine.
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post #4 of 18 (permalink) Old 10-20-2013, 05:15 PM
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The original screen is between 1/8 & 3/16 of an inch. I think you will be fine as long as you make the shield a reasonable size.
Do you have a way to form the shield though? That's where they get their strength.

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post #5 of 18 (permalink) Old 10-20-2013, 05:38 PM
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Quote:
Originally Posted by foreck View Post
Hello! I have an opportunity to pick up a piece of lexan for dirt cheap. Problem is its 1/8" thick and the current windshield on my bike is about a 1/4" thick. Is it possible to safely use this thickness?
Thanks!
If your using it as a standard size windshield? From my experience, flat out NO!
If you're max size is going to be approx 16" square with a molded curve, it will suffice but with reservations. A small rock at speed "WILL" crack it.
Nearly all bike shields are 3/16, give/take several thousands.
.
My first shield was out of 1/8" Lexan and was about 24" x 28" with a molded curve. It vibrated wildly above 50 mph and the first/only bird strike it bent back to my nose then forward and split in two JUST missing my forehead.
.
Hope this info helps.
.
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post #6 of 18 (permalink) Old 10-21-2013, 01:56 AM Thread Starter
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If your using it as a standard size windshield? From my experience, flat out NO!
If you're max size is going to be approx 16" square with a molded curve, it will suffice but with reservations. A small rock at speed "WILL" crack it.
Nearly all bike shields are 3/16, give/take several thousands.
.
My first shield was out of 1/8" Lexan and was about 24" x 28" with a molded curve. It vibrated wildly above 50 mph and the first/only bird strike it bent back to my nose then forward and split in two JUST missing my forehead.
.
Hope this info helps.
.
Awesome thanks your words have been on my mind all day. Im really leaning towards no now. But, in the interest of not letting a possible $30 windshield go by the wayside...If you had doubled layered it, and had the two screwed together, do you think it would have worked?

Thanks again! Also, I have yet to see how to remove the windshield from my '87 wing right now. Im about to look it up. If its crazy like remove the whole fairing, I my leave it the opaque way it is :P

Ben
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post #7 of 18 (permalink) Old 10-21-2013, 02:51 AM
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I would not suggest to use such a windscreen. It's too thick and it's not safe. Why not buy an aftermarket one but 3/16" on eBay for $60-65?

As we say in Russia:" Avaricious man always pays twice!"

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post #8 of 18 (permalink) Old 10-21-2013, 03:20 AM Thread Starter
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I would not suggest to use such a windscreen. It's too thick and it's not safe. Why not buy an aftermarket one but 3/16" on eBay for $60-65?

As we say in Russia:" Avaricious man always pays twice!"

Regards,

Sergey
Ok! Ill take all of you alls word for it. No 1/8" lexan for me, doubled up or nothing. I mean, thats why I came here, for advice right? Thankyou!
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post #9 of 18 (permalink) Old 10-21-2013, 05:49 AM
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Originally Posted by foreck View Post
The sheet im picknig up is 1/8" thick, 62"x47" 9030/9034 Lexan plexiglass for $30.
.
If I had a chance to acquire this sheet, I'd take it. Too valuable as safety glass replacement for doors. I use this stuff on my garage windows, thwarts break ins since the thief will have to make a lot of noise trying to bust it.
.
Bad part is storage. Longer it sits the brittler it gets.
.
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post #10 of 18 (permalink) Old 10-21-2013, 07:55 PM
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Originally Posted by FM View Post
.
If I had a chance to acquire this sheet, I'd take it. Too valuable as safety glass replacement for doors. I use this stuff on my garage windows, thwarts break ins since the thief will have to make a lot of noise trying to bust it.
.
Bad part is storage. Longer it sits the brittler it gets.
.
That would be another concern. UV rays from the Sun will make Lexan brittle and craze. From there it's only a matter of time before it simply disintegrates from wind pressure while you're going down the road. My windshield is 27 years old-you will not get that from Lexan.

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