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  #1  
Old 03-06-2017, 10:15 AM
Brent 801's Avatar
Brent 801 Brent 801 is offline
 
Join Date: May 2012
Location: Conroe, TX
Posts: 28
Default Canopy Attachment Meathod

Has anyone used Sikaflex to attach the canopy on a 14? If so, any advice?
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  #2  
Old 03-06-2017, 03:53 PM
mrhorspwr mrhorspwr is offline
 
Join Date: Aug 2016
Location: Okc, Oklahoma
Posts: 28
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I just did my canopy and i have to say, It went very smooth with the screws. As long as you use a dull drill bit you will have no problems with drilling the canopy. One thing to consider before using sicaflex is what do you do with the pre drilled holes in the skins. I assume you just let the glue ooze out of the holes and grind it down after it dries. However i cant imagine the glue staying inside a #30 hole in a .025" thick skin. In a couple years i would expect it to crack and fall out. I have dealt with some good glues designed for use on aluminum but none of them are that good.
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started Rv14 May 2016
emp kit and fuse kit done
wings almost done
canopy done
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  #3  
Old 03-07-2017, 03:16 AM
salto salto is offline
 
Join Date: Apr 2015
Location: Wee Waa Australia
Posts: 212
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The side skirts could be easily remanufactured without the screw holes. Nothing complex there.
I intend to follow plans and screw were recommended. A question I have for those that have completed this step is there a need to run some sealant between the side skirts and plexi or can you just rely on the channelling to drain any moisture flying or on ground.
Thanks
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  #4  
Old 03-07-2017, 04:54 AM
M McGraw's Avatar
M McGraw M McGraw is offline
 
Join Date: Dec 2012
Location: Greenback, TN
Posts: 274
Default Sealant

Quote:
Originally Posted by salto View Post
The side skirts could be easily remanufactured without the screw holes. Nothing complex there.
I intend to follow plans and screw were recommended. A question I have for those that have completed this step is there a need to run some sealant between the side skirts and plexi or can you just rely on the channelling to drain any moisture flying or on ground.
Thanks
I do not know for certain that sealant is needed, but I did in fact use some. The other thing to consider is to be certain to oversize the holes in the plexiglass and not torque the screws any more than required. You need to have the plexi expand and contract within the frame.
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  #5  
Old 03-07-2017, 06:57 AM
mrhorspwr mrhorspwr is offline
 
Join Date: Aug 2016
Location: Okc, Oklahoma
Posts: 28
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I did not put any sealant between the glass and retainers. After the canopy and back window were finished, I applied an edge seal around the perimeter. Just mask aprox an 1/8 in onto the window and mask the edge of the metal next to the window. Mix up some sealer and apply it with a popsicle stick. Use soapy water or spit to smooth the edge seal then peel your tape.
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started Rv14 May 2016
emp kit and fuse kit done
wings almost done
canopy done
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  #6  
Old 03-07-2017, 07:24 AM
rv7charlie rv7charlie is offline
 
Join Date: May 2006
Location: Pocahontas MS
Posts: 1,903
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Quote:
Originally Posted by mrhorspwr View Post
I just did my canopy and i have to say, It went very smooth with the screws. As long as you use a dull drill bit you will have no problems with drilling the canopy. One thing to consider before using sicaflex is what do you do with the pre drilled holes in the skins. I assume you just let the glue ooze out of the holes and grind it down after it dries. However i cant imagine the glue staying inside a #30 hole in a .025" thick skin. In a couple years i would expect it to crack and fall out. I have dealt with some good glues designed for use on aluminum but none of them are that good.
Sika doesn't harden, so no cracks.
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  #7  
Old 03-08-2017, 09:06 PM
KeithB KeithB is offline
 
Join Date: Mar 2014
Location: Granbury, TX
Posts: 76
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I used Sikaflex on my RV-14A - it took a lot of planning but I'm quite pleased with the results. I would do it again.

My primary resources were the blogs by Bruce Hill (RV-9A) at http://www.overthehills.com/RV-9A-Project and Bruce Swayze (RV-7A) at http://www.europa.com/~swayze/index.html.
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