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post #1 of 6 Old 10-06-2013 Thread Starter
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Mirage 33 Window Replacement

Can anyone advise the procedure for replacement of these crazed windows ?
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Re: Mirage 33 Window Replacement

Those are in aluminum frames, if I recall correctly.

Some frames are two piece, if that's the case this is easier. You might try to find the original rubber seals, but you can also reassemble the new lenses into the frames (if they come apart) using Dow Corning 795 or equivalent.

Save the old ports and use them as templates to cut new. Use Cast acrylic if you can find it, but that's not always easy.. either way acrylic is preferred over Lexan, which scratches and mars easily. I'd suggest the darkest tint.. it looks best from outside and still lets in lots of light and is essentially clear from the inside (and equally clear from outside at night with lights on below..) Plastics suppliers will usually cut it for you for a small fee.. generally worth it.

If using a sealant rather than gaskets be sure to mask the exposed areas of the lens and the frames carefully to ease cleanup later, lay the sealant into the frame halves, (use several small bits of the old gasket as locaters to center the lens in the frame), wipe up the excess and reinstall the frames. Remove the masking and 'voila'!

If in fact the frames are plastic you may have more issues.. they rarely survive removal intact, but you never know.

The other alternative is to apply new ports to the outside surface using the same sealant.. here you have options too, screw/bolt in or simply use the adhesive sealant as a glue (cleaner look but you need to rig something up to hold the windows in place during the cure. The same sealant works a treat. This also gives you the option of slightly updating the look with perhaps a slightly different shape since you're not constrained by the cabin cutouts anymore. It also means you'll have some dressing up to do below where the frames were.

If you go that route, be sure to drill oversize holes (if screwed down) and plan a residual thickness of sealant (both to allow for expansion differences between F/G and the acrylic.) Again carefully and fully mask all adjacent surfaces for easy cleanup and a crisp look afterwards.

It can look OK even with screws.


Ron

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post #3 of 6 Old 10-07-2013
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Re: Mirage 33 Window Replacement

If they are opening ports i'd send them out to be rebuilt. Select Plastics in East Norwalk, CT has an excellent rep -- excellent work and fair prices. I don't know the others and can't comment,
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post #4 of 6 Old 10-08-2013
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Re: Mirage 33 Window Replacement

I am going to replace windows this Fall as soon as it cools down enough here in Charleston to work midday. See pic of my windows. I see rivets and assume they get drilled out and replaced with screws. Or should rivets go back in? I doubt 1966 gaskets are salvageable but might try. Anyone know of a video of this kind of replacement job? Any other warnings or guidance on doing this job right?
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Re: Mirage 33 Window Replacement

Thank you very much for the very extensive guidance.
The windows are with inside and outside metal frames each surrounded by an exterior gasket in which the plexiglass appears to be seated.
Removing the gaskets permits the glass to be pushed out ?
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Re: Mirage 33 Window Replacement

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Originally Posted by LKitchener View Post
Thank you very much for the very extensive guidance.
The windows are with inside and outside metal frames each surrounded by an exterior gasket in which the plexiglass appears to be seated.
Removing the gaskets permits the glass to be pushed out ?
Maybe, (like a bus window) but if the frame halves are separable then the sequence would be more like.. remove frames from cabin wall, separate, new lens, gasket on lens, assemble frame over both, reinstall frame.

Would have to actually see the set up to be certain, sorry....

Ron

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