Targa Miata
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August 8, 2007 - After about three fittings, I riveted the window into place.
To keep the rivets from pulling through the fibreglass hardtop, I used washers on the back side. The polycarbonate (generic term for Lexan) is flexible enough that it will simply bend around the curves without any need for forming, and the rivets will easily hold it in place even before they're popped..
I also tried sealing the window in to place with silicone, I'm thinking this wasn't a good idea aesthetically. I've never had to worry about weatherproofing before. It's supposed to dry clear, we'll see if that happens after more than 12 hours. The fact that I painted the lip around the inside of the window black before starting didn't help there.
By the way, the original glass window weighed a bit over 11 lbs. I didn't weigh the polycarbonate, but based on the density of the material it should be right around 5-6 lbs. A Miata windshield is 20.9 lbs.
tags: weight loss, interchange