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-   -   Wing window rebuild (http://www.airforums.com/forums/f164/wing-window-rebuild-105478.html)

Belegedhel 06-03-2013 12:26 PM

Wing window rebuild
 
Hi all!

I've pulled the wing window out of one side of my '73 Globetrotter because...well..because I was tearing the rest of it apart, so thought I might as well (plus there was moisture and funky crystalline stuff growing out of the rubber sealing between the panes). It is a double pane window, and it looks like it has been replaced at least once already, probably due to breakage.

Anyway, the window was disassembled more easily than expected (based on several folks who declared that these could not be disassembled), and I was planning to reassemble as a single pane window. This means that I have to fill about 1/2" of window frame thickness with some kind of spacer. I suppose I could use Trempro or caulking, but was trying to come up with a slightly more elegant (less goopy) solution. Alternatively, I could rebuild as a double paned window and run the risk of ending up with moisture between the panes again.

Any suggestions?

Belegedhel 06-06-2013 02:18 PM

Awful quiet...

Tom Nugler 06-06-2013 02:36 PM

Some time ago Inland Andy posted some info on drilling small holes through the lower edge of the outer frame into the space between the glass. Supposedly this allows for some ventalation.
Search for the tread. I suspect it would be easier to drill the holes with the window apart and out of the shell.

Tom

Belegedhel 06-06-2013 02:53 PM

Yes, I recall seeing that thread. I think that was offered as a solution to avoid removal and disassembly of the window. In my case, the window is already removed and disassembled, so I was hoping some other intrepid soul had already figured out a good practice for making the conversion to a single pane (thus avoiding the need for a breather hole).

Inland RV Center, In 06-06-2013 03:27 PM

Quote:

Originally Posted by Belegedhel (Post 1309278)
Yes, I recall seeing that thread. I think that was offered as a solution to avoid removal and disassembly of the window. In my case, the window is already removed and disassembled, so I was hoping some other intrepid soul had already figured out a good practice for making the conversion to a single pane (thus avoiding the need for a breather hole).

That "funky" white stuff that was between the glass, is "not" funcky at all.

It was intentionally placed there, when the window was made.

It's a desiccant, which absorbs moisture.

If your going to reassemble the two panes of glass, it is very wise to place some of that "funky" stuff between the two panes.:)

Andy

Belegedhel 06-07-2013 08:52 AM

Andy,

The intention was to reassemble as a single pane window--the conundrum is how to fill the space in the frame that would normally be occupied by the second pane and spacer material between the panes.

How are the "new" single pane replacement windows constructed? Are they built in the same old frame, but with spacer material in it, or are they in a completely new extrusion?

thanks!

Aerowood 06-07-2013 09:18 AM

That's a really good question. What to use that will keep the single pane pushed outboard but still be flexable? The only thing I could think of would be nylon rope and then seal it in with the sealant of your choice. I would also use some sort of welting around the single pane to keep from having a glass to aluminum contact, most likely find something like that at an auto glass shop. Then fillet seal the outside perimeter as well.

Good Luck

Inland RV Center, In 06-07-2013 09:25 AM

Quote:

Originally Posted by Belegedhel (Post 1309631)
Andy,

The intention was to reassemble as a single pane window--the conundrum is how to fill the space in the frame that would normally be occupied by the second pane and spacer material between the panes.

How are the "new" single pane replacement windows constructed? Are they built in the same old frame, but with spacer material in it, or are they in a completely new extrusion?

thanks!

The single pane and double pane wing windows use 2 entirely different extrusions.

Andy

wahoonc 06-07-2013 10:33 AM

I have not messed with my wing windows, I did how ever take a couple of the Vista Views apart. On one the interior pane was already broken, I use a piece of clear water hose as filler it has since turned black. I have seen very dense foam "weather stripping" that would probably work to hold the pane in place against the outside of the frame. The originals did use a rubber/vinyl gasket, I used a very heavy bead of sealant to replace the deteriorated rubber/vinyl gasket.

Aaron :cool:

Panama Red 06-07-2013 11:53 AM

Might want to check and see if Tremco makes a Polyshim that thick...
-Red

Lumatic 06-07-2013 12:02 PM

The funky crystalline stuff sounds like dessicant and it is supposed to be there to absorb moisture. The stuff that seals the window and separates the panes is butyl.
As with most things that come apart, the putting putting together again is akin to Humpty Dumpty.

Belegedhel 06-07-2013 01:20 PM

Well, we keep coming back to the "funky stuff." There was a very enlightening discussion about this very topic on the following thread:

http://www.airforums.com/forums/f164...ows-97917.html

You can see actual pictures of the stuff as it seems to defy gravity. Some are still convinced it is dessicant, but as I was in favor of the theory that it was the product of elastomeric strain crystallization, I went ahead and lit some on fire once I had the window apart. Burnt with a smoky yellow flame, the kind you get when a tire catches fire.

Regardless the explanation of the funky stuff, my plan its to go single pane, avoid the need for dessicant or possibility of strain induced crystallization.

Lumatic 06-07-2013 04:19 PM

Elastomeric crystallization aside, it is reminicinent of a thixotropic solid.

The amber color indicates the desicant has reached it's saturation point. If you dry it out it should turn white.

As for the smoky yellow flame, have you tried smoking it?

Belegedhel 06-07-2013 05:08 PM

Damn--lost opportunity!


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