perspex windows

Post by **si import** » Thu Jan 03, 2013 9:52 am

is there alot of weight to be saved by using perspex windows . its something i will be doing but not just yet i think. cheers

Post by **NafemanNathan** » Thu Jan 03, 2013 10:00 am

I can weigh my fronts (with sliders) for you, but won't have a glass window to compare it too.

Post by **si import** » Thu Jan 03, 2013 11:58 am

Yeah please mate . Then ill weight my glass ones and see the difference . Cheers

Post by **Donald** » Thu Jan 03, 2013 1:09 pm

Is this any particular type of perspex? As in a certain BSEN standard for track use or however you want to word what I'm getting at

89 UKDM BA4 4WS (resto job!) · Post by **wurlycorner** » Sat Jan 05, 2013 8:12 pm

si import wrote:Yeah please mate . Then ill weight my glass ones and see the difference . Cheers

NafemanNathan wrote:I can weigh my fronts (with sliders) for you, but won't have a glass window to compare it too.

I have a spare glass one in the shed that I can weigh tomorrow if you like?

Post by **Donald** » Sat Jan 05, 2013 8:17 pm

If you can work out the area 4mm glass is 25kg m^2.

mercutio · Post by **mercutio** » Sat Jan 05, 2013 9:37 pm

well they say they are half the weight of the glass the rear quarters must be very light because they weigh very little

Post by **Donald** » Sat Jan 05, 2013 9:43 pm

What's the score with windscreens?

Not sure what thickness they are (would guess at 6.4mm), but at work the laminate we use comes in 4.4, 6.4, 8.8, 12.8 and then there's ridiculous thicknesses like 30mm that make my arse turn inside out. Either way lots of weight to save on a windscreen.

mercutio wrote:well they say they are half the weight of the glass the rear quarters must be very light because they weigh very little

In my experience perspex seems much much less than half the weight.

Post by **NafemanNathan** » Sat Jan 05, 2013 10:44 pm

Donald wrote:What's the score with windscreens?

For road legality your front needs to remain glass.

Post by **NafemanNathan** » Sat Jan 05, 2013 10:56 pm

NafemanNathan wrote:I can weigh my fronts (with sliders) for you, but won't have a glass window to compare it too.

And 2.288kg for a 5mm thick front window with slider by the way...