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  #31  
Old 09-10-2019, 06:15 AM
Capt Capt is offline
 
Join Date: Feb 2017
Location: Australia
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15 months now since I stop drilled my small crack, the very tiny one that started beyond the filled hole has not progressed any further, am glad it's not in my view!
Welcome to the club TomVal, it's something you accpet and live wth, hurts though at first! -
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  #32  
Old 09-10-2019, 02:13 PM
rv9builder rv9builder is offline
 
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Location: Irvine, CA
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Quote:
Originally Posted by TomVal View Post
I just joined the Lexan Canopy Crack Club (LCCC)...having t-shirt made. Good thread!

Talked to mothership and discussed technique and options ($$$). Will attempt fix first.
Tom, where did it crack? Did Van's have any suggestions about how to prevent the problem?

Thanks,
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  #33  
Old 09-10-2019, 05:50 PM
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TomVal TomVal is offline
 
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Originally Posted by rv9builder View Post
Tom, where did it crack? Did Van's have any suggestions about how to prevent the problem?

Thanks,
The crack is about 1.5 inches long and started about two inches above the trailing edge of the canopy skirt. The crack does not penetrate completely through the Lexan but has an internal void appearance like an elongated air bubble was trapped inside. The crack is near the fuel filler side of the canopy.

The best prevention is keeping the canopy free of contamination, particularly from fuel, and be sure to use only cleaning solutions approved for Lexan. I've been careful during the fueling process so my best guess is that my failure was related to stress and/or vibration.

On Van's website you can find some guidance on the proper care and feeding of your canopy.

https://www.vansaircraft.com/faq/acr...-window-hints/
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Tom Valenzia
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RV12 Jabiru 2200 Powered
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Last edited by TomVal : 09-12-2019 at 03:38 PM.
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  #34  
Old 09-10-2019, 08:47 PM
rv9builder rv9builder is offline
 
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Thanks for the info, Tom. Sorry to hear yours cracked.
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  #35  
Old 09-17-2019, 01:29 PM
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TomVal TomVal is offline
 
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Today I stop drilled and applied two applications of Weld-On #3 to the crack.

For filling the ⅛" holes, I purchased a 4 oz tube of Weld-On #16. I don't particularly like the applicator tip that came with the adhesive. I practiced with a scrap piece of lexan. The tip can easily slip off the nozzle of the tube and make a mess.

The applicator needle that came with #3 was too thin of a needle for use with #16. What size applicator needle or syringe should be used with this grade of adhesive? Also, what technique did you use fill the drilled holes without using tape on the underside?
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RV12 Jabiru 2200 Powered
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  #36  
Old 09-17-2019, 07:23 PM
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Pmoran Pmoran is offline
 
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I used the applicator that came with the Weld On #16 for the hole, but was not as smooth as I would have preferred.

Itís been a while since I made my repairs and thankfully the crack is not immediately in my view, but I havenít had any issues with it and donít even notice it until I clean my windshield after my flights.

Good luck!
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