Percy's high performance polycarbonate windshield

cooperscobra · Apr 28, 2009

Need to replace the front windshield on my 68 fastback and am considering using a polycarbonate windshield. There seem to be a lot of benefits. Up to 75% lighter, anti fog coating, highly scratch resistant, and it does not seem to have a lot of the optical issues as standard lexan windshields. Anyone have any thoughts on this? The link below will show you exactly what I am talking about. Thanks in advance.

Percy's High Performance, Inc.- Speedglass

2+2GT · Apr 28, 2009

Are you driving the car, or "RECING" it, as they spelled it on the website?

Bullitt · Apr 28, 2009

Note that it says "virtually as hard as glass" which is not hard as glass. I've got experience with Lexan windshields in race cars and trust me they scratch very easily. I would avoid these for a street car completely!

cupcake · Apr 28, 2009

For a race only car sure. But not for a street car. And first time you use wipers its done

cooperscobra · Apr 28, 2009

This is not lexan. From what I have read it does not scratch easily at all. Lexan does. I have seen demonstrations on youtube where these windshields hold up to very extreme tests. I do realize they are intended for racing, just not sure what benefit I would have going with factory glass instead.

red65 · Apr 29, 2009

fwiw, automotive windshields are supposed to have an "AS1" marking, which indicates that they're appropriately-constructed safety glass. If your state has a safety inspection, this will likely get caught very quickly. If it doesn't, well who knows how long you might get away with it. In any case, for street use, it's supposed to be safety glass and is supposed to have an "AS1" marking.

That aside, it might be the ticket for a track car. Looks good - thanks for posting it.

ron67fb · Apr 29, 2009

Lexan is one of the trade names polycarbonate is sold under.

Where on that page does it say it isn't Lexan?

truck90278 · Apr 29, 2009

not street legal =

rbohm · Apr 29, 2009

polycarbonate does scratch rather easily, my glasses lens are made from polycarbonate. anti-scratch coatings help, but unless you are willing to use only soft cloths to clean and dry the windshield, you will have scratches form quickly. this is the reason polycarbonate is not legal for the street as a windshield.

65ShelbyClone · Apr 29, 2009

I don't see what the confusion is about. It says it is G.E. Lexan(twice) and that they are not DOT approved. Lexan is General Electric's trademark for polycarbonate plastic.

For a street car, I wouldn't even think about using plastic windows regardless of what they are coated with.

cooperscobra · Apr 29, 2009

Sector11 Polycarbonate Windshield Review - LotusTalk - The Lotus Cars Community

Maybe I just really want to believe this s a good option. This is where I originally got the idea. I am all about cutting some weight and from what the guys on this forum say, it seems like a viable option. A lot of the comments I read on this post seem like they are from earlier lexan windshields without the proper coating. I do realize it is not street legal, getting through an inspection is not my biggest concern here. Just wanted to see if anyone had experience with a polycarbonate windshield.

rbohm · Apr 29, 2009

one more problem with polycarbonate is that it is not as strong as the laminated glass used for windshields. things that normally would bounce off a glass windshield have a very good chance of breaking through a polycarbonate windshield.

Bullitt · Apr 29, 2009

cooperscobra said:
Maybe I just really want to believe this s a good option. This is where I originally got the idea. I am all about cutting some weight and from what the guys on this forum say, it seems like a viable option.

Just curious, but have you ridden / driven a Lotus? Talk about minimalist.

If you want to cut weight, there are a LOT better and SAFER ways of doing it!

68FBJJZ109 · Apr 30, 2009

I am thinking about replacing at least my Rear window on my Fastback with lexan.
My neighbor has a friend who puts a really tough removable coating on school buses in Philadelphia because apparently the school districts have an issue with vandalism.

I think its a great weight to save weight, the rear window in the 67-68 FB are a bit on the heavy side. I don't see and issue with running them. From a safety stand point the lexan is pretty tough.

Edster · May 1, 2009

I'd rather have more weight on the rear than the front. But I wouldn't use a "plastic" windshield or rear glass. Auto glass is specifically designed to break into little pieces. Lexan/plastic won't. But its your ride do what you want.

bnickel · May 3, 2009

i wouldn't use this stuff on the windshield in a street car, but for the rest of the glass in the car i say go for it. losing a few pounds of heavy glass from the side windows especially would be really nice and help save door hinges too. i would tint the insides of the glass and get some of that aftermarket coating applied to the outside and probably not have to worry about scratches for a very, very long time. if you were to coat the outside of the windsield it might be ok to run the speedglass on a street car but still iffy, IMHO. I do know of pro-touring cars that are using poly glass everywhere in the car and i've heard no bad things about it, but these are cars that only get driven on nice days or on long road trips, short in town trips and occasional track days, they don't see the kind of abuse a daily driver gets

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