Anybody running a full Lexan window set on the street. I am wondering just how much louder the car is inside? The Speedglass product looks quite nice. Just looking for some real world input.

 

I too am curious about this subject. 100 pounds of weight savings would be wonderful, especially when the weight removed is so high. Also- does anyone know if the polycarbonate/lexan can be tinted like normal auto glass?

 

not sure if it matters here but with lexan windows on the street.. its gonna be sratched up like crap in no time

 

not necessarily. they have the new lexan that isnt made by dupont that is meant for long period use on track cars, and is also streetable.
now, just cause its streetable doesnt mean its advisable. although lexan doesnt shatter or crack, and is light, do you have the money for it? also, whats the point of shaving weight for a street car? if you have as much as the dash, you dont need it. 1 more thing, if you are ever going to drag it or scca or nasa race it, prepare to get put into a class that is WAY above the limit of a street car.

Lloyd

 

There are different companies with different coatings that minimize that problem. From the marketing it sounds like not an issue anymore.

Plus I don't drive my car in the rain so windshield wipers are not a real issue for myself. But, I don't have first hand knowledge...

I would seem though that if you had a thickness smaller than the original in your side windows that they might rattle and make more noise moving around in the frame.


http://www.racingshields.com/index_f...carpricing.htm

http://www.percyshp.com/Speedglasspage.htm

 

Money, yes.

I will never be in a real race, just track day stuff. My car will probably see about 5k miles a year. Definitely not a daily driver.

Just because my car isn't a race car doesn't mean that I don't want to build it like one....within reasonable limits. I think a lighter car is pretty much always better.

I figure if I am building my dream car then that means it is my dream...

 

I agree with Christopher W.

-Anyone have actual feedback?

 

The speedglass from Perceys is by far a better lasting lexan, its not the mr10 that scratches easy. There is potential problems the wind can cause the window to bow in and there probley is more noise. Plus lexan is not legal in street cars as glass has to be certified. But if i wanted to run it i would.
I provided the glass for a number of cars that percy makes lexan for and i still have a full set for the secound gen rx7.

There also very nice people to do business with.

 

I have been using the complete Percy's Speed glass for over 3 years on the street (Las Vegas is very dusty). The optical carity is better than the factory glass. Percy's Speedglass makes the lexan windshields for NASCAR too. They put a special coating on the lexan to prevent scratches. Car is mostly street driven but can be defined by some as track car. No problems with scratches. Still as clear as 1st day installed. Very happy and when I had my rotary/supercharger in the car the front and rear glass and carbon fiber sunroof (2+ lbs vs 30+ lbs for stock complete assy.) was worth 3/10's sec reduction in ET. For me one of the best investments for weight reduction and improved performance. Currently the cars best time is 10.954 sec @ 129.72mph (drive to the track 30+ miles each way in the 100+ deg heat, hit the track, drive home. Not dialed in yet should be a 10.7 or better in her)

Installing a Lexan front Windshield is not DOT approved. In the case of an accident emergency rescue cannot break the windshield to gain access.

Front windshield weight 26+ lbs (stock) 12lbs ( Percy's 3/16" thinnest you can use with out a center support brace). Had to remove about 1" border around lexan of the coating so urethane adhesive can adhere to lexan. Using the recommended urethane adhesive makes for a very strong application (much stronger than bolts) and most people cannot tell if it it is Lexan. No bowing or movement of windshield.

Rear 33+ lbs (stock) 8+ lbs (Percy's .093 thinnest available-flexes some bit, also the rear hatch will now pop up very quickly, 1 support strut can be used)

Side 9+ lbs (stock) less than 3 lbs (Percy's .093- can still use roll up mechanism)


Yes my rear and sides are limo tinted the front has a upper bolder tint. Only a few slight bubbles on application but nothing noticable or distracting.


My thread on FC build up, sorry not rotary anymore.


https://www.rx7club.com/rx-7-audio-visual-lounge-143/1987-supercharged-fc-457752/page3/

 

I was going to add, my company also sells a filming sheet that is applied
over lexan, acrylic, and plastics to make it scratch resistant. The only prob
is that after a certain point, with all the UV saturation it will yellow. Luckily
its cheap, and when it does, you can remove it and by a new sheet. If I
knew of any (for public use) I would highly recommend an Aerosol coating
if at all possible. I hear that it is not as UV reactive.

Lexan can havetint applied to it, it's just like any other plastic. As long as
no antiscratching agent is coating the insides of the Lexan, pretty much
anything can stick to it, expect it to form bubbles and wrinkles if you wet
apply it though.

 

click on my thread i have full lexan on the car

 

Thanks for all the information. I am not going to do it.

I am spraying Lizardskin to do sound deadening. It will be on the interior and underneath the car, as well as the outside firewall. It doesn't really make sense to do all this effort to quieten the car down. Which adds weight, then use Lexan to lighten it. Then it will be louder with the Lexan.

All in all, I think the Lexan is a killer idea even on the street...just not this car.

Thanks, C