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> Neo914 single piece door windows, the plan at least...
Mark Henry
post Sep 8 2005, 08:51 AM
Post #41


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Even the one-piece windows kits for bugs are a PITA and they have a frame.
I'll never do one again on my cars.

Just my opinion...good luck
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aircooledboy
post Sep 8 2005, 09:34 AM
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QUOTE (redshift @ Sep 8 2005, 02:23 AM)
are you sure it can't be cut with a water saw?


M

Pos-o-tive.

Any breach of the structure, and you have an instant 100,000 piece jigsaw puzzle.

If you ever have a garbage piece of tempered glass laying around, try this for a little fun: position the glass over a trash can (saves clean up later (IMG:http://www.914world.com/bbs2/html/emoticons/laugh.gif) ), find the closest thing to a 90' corner on it, and tap that corner with a hammer. Don't wack it hard, just tap it. Any edge will do, but a corner is the ultimate weak spot on a tempered glass. You will be shocked at how little force is needed to "blow" the glass, and when it does, there will be 1000's of pieces, and not a single shard will be bigger than 5mm across. No matter how it happens, if you break the chain of the glass structure, whether by hitting it or cutting it, the result will be the same. KABLOOUUY!!!! (IMG:http://www.914world.com/bbs2/html/emoticons/ohmy.gif) (IMG:http://www.914world.com/bbs2/html/emoticons/w00t.gif)
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jonwatts
post Sep 8 2005, 09:40 AM
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I appreciate the fact that you have 20 years of experience with glass, but if I had a tile wet saw I'd just have to see this for myself. Anybody have a wet saw and a spare vent window?
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aircooledboy
post Sep 8 2005, 09:45 AM
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(IMG:http://www.914world.com/bbs2/html/emoticons/laugh.gif)

Have at it my man. Just make sure you've got a shop vac handy. (IMG:http://www.914world.com/bbs2/html/emoticons/chairfall.gif)
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neo914-6
post Sep 11 2005, 02:48 AM
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Well I got the RX7 glass to test fit angainst the door. Close in width, and both side angles but I knew the glass section under the vent glass would be a problem. This should help illustrate some of the challenges:


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neo914-6
post Sep 11 2005, 02:51 AM
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Here's the problem which is bigger than what cutting and welding can solve.


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neo914-6
post Sep 11 2005, 02:53 AM
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Another is the overall size vs. the door space to get the glass to completely retract into the door...


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neo914-6
post Sep 11 2005, 02:55 AM
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And yet another problem to solve is having the correct bend, the 914 is the flatter one is on top.


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neo914-6
post Sep 11 2005, 03:08 AM
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There may be the right shape existing but there are several features and dimensions that are needed. I've decided to go with a hard coated polycarbonate for the pre-production version called Speedglass It's used for racing for it's weight advantages but the coating should at least hold up to a door wiper.

First I'll fabricate a harder template of plastic or masonite to develop the lift mechanisms. Then get a pair of blanks and cut to size. If this is prod. reproducible, then I'll consider tooling. An alternative to tempered glass is laminate (like windshields) but still require the fixtures for the heating process.
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Andyrew
post Sep 11 2005, 08:52 AM
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Is there no possible way to heat up the glass without braking? that would allow it to be contoured less...
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neo914-6
post Sep 11 2005, 01:22 PM
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QUOTE (Andyrew @ Sep 11 2005, 06:52 AM)
Is there no possible way to heat up the glass without braking? that would allow it to be contoured less...

You'd need a large enough oven or kiln AND those fixtures to hold the shape. This is the bulk of production costs.
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jonwatts
post Sep 13 2005, 06:46 PM
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Ok, part of me hates this, but how about doing what just about every other car manufacturer does; put a plastic triangle where the door meets the A-pillar. This will get you anywhere from 3" to maybe 5" of clearance where you need it, near the door hinges.

The other benefit is that it looks like you can get M3 style mirrors for just about any of these cars, (in carbon fiber if you like) for everything from Del Sols to trucks (ebay search). The $30 sets probably aren't worth the cost of shipping, but someone probably makes some that are decent.

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neo914-6
post Sep 13 2005, 07:33 PM
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QUOTE (jonwatts @ Sep 13 2005, 04:46 PM)
Ok, part of me hates this, but how about doing what just about every other car manufacturer does; put a plastic triangle where the door meets the A-pillar. This will get you anywhere from 3" to maybe 5" of clearance where you need it, near the door hinges.

The other benefit is that it looks like you can get M3 style mirrors for just about any of these cars, (in carbon fiber if you like) for everything from Del Sols to trucks (ebay search). The $30 sets probably aren't worth the cost of shipping, but someone probably makes some that are decent.

Jon,

uh good idea, it's what I've stated at the start of this thread. (IMG:http://www.914world.com/bbs2/html/emoticons/wink.gif) This is actually a common solution that allows more front vertical edge to move in the window track. The tri-angle is where I will mount some SPA race style mirrors with blinkers...


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redshift
post Sep 13 2005, 07:33 PM
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QUOTE (Neo914-6 @ Sep 11 2005, 04:51 AM)
Here's the problem which is bigger than what cutting and welding can solve.

You could cut a slot for it, and just slam the door once..

(IMG:http://www.914world.com/bbs2/html/emoticons/unsure.gif)


M
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redshift
post Sep 13 2005, 07:37 PM
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You could put stationary/removable windows in, ditch the lifting mechanisms.. and use liftable sections... like some others cars have..


M
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neo914-6
post Sep 13 2005, 07:48 PM
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(IMG:http://www.914world.com/bbs2/html/emoticons/screwy.gif)


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redshift
post Sep 13 2005, 08:20 PM
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LOL!

WhatSoEver!


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jonwatts
post Sep 13 2005, 08:48 PM
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no rules, just wrong
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Dude that was like 50 posts ago. If my memory were that good I'd have been one of those people that wear stethoscopes and prescribe mile's meds.

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redshift
post Sep 13 2005, 09:31 PM
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QUOTE (jonwatts @ Sep 13 2005, 10:48 PM)
Dude that was like 50 posts ago. If my memory were that good I'd have been one of those people that wear stethoscopes and prescribe mile's meds.

I doubt the people @ 1-800-PET-MEDS wear white coats..


M
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Gary
post Sep 13 2005, 10:34 PM
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QUOTE (Neo914-6 @ Sep 13 2005, 06:48 PM)
(IMG:http://www.914world.com/bbs2/html/emoticons/screwy.gif)

Ooooh TR3. I resemble that remark... Best without the side curtains though.


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