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  #1  
Old 10-12-2005, 12:00 PM
John Adams John Adams is offline
 
Join Date: Oct 2005
Location: Atlanta
Posts: 3
Wink Attaching Canopy with Adhesive??

Did you use adhesive to attach your canopy plexi? What brand/spec adhesive did you use? Are you pleased with the results? Did you not use any rivets? It seems to me the adhesion is no better than the powder paint on the canopy frame being glued to. Why not scrape off the powder coat to adhere plexi to bare metal? How do adhesives accommodate the extensive (4X) thermal expansion rate of plexi over aluminum/steel? I am thinking of a mix of rivets (piece of mind) and adhesive. And, perhaps only using rivets on one end of each plexi panel (slider) to accommodate expansion. Sure wouldn't want to have a blow off. Your wisdom please.
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  #2  
Old 10-12-2005, 01:45 PM
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Skytrash Skytrash is offline
 
Join Date: Jan 2005
Location: Cameron Park, CA
Posts: 73
Default SikaFlex 295UV

John,

I bonded my canopy to the slider frame using SikaFlex 295UV and so far (18 hours) it is working well. There have been a few threads on this subject, search for Sikaflex.

I scuffed the powder coated canopy frame before bonding.

The Sika product needs to be a minumum thickness derived from a table in the data sheet to account for the CTE difference. The adhesive is pliable and stretches to accomodate CTE.

I have a few pictures at:

http://websites.expercraft.com/skytrash/


Jim Bray
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  #3  
Old 10-13-2005, 05:23 AM
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Kahuna Kahuna is offline
 
Join Date: Dec 2004
Location: Gold Hill, NC25
Posts: 2,400
Talking Adhesive works

It is holding no problem.
I have about 60 hours, most of it @200kts. Canopy, skirts, and windscreen all glued no rivets.
There is no chance of it coming off OR ever cracking via natural causes.
Kahuna
S8
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  #4  
Old 10-22-2005, 10:48 AM
Rene Bubberman's Avatar
Rene Bubberman Rene Bubberman is offline
 
Join Date: Aug 2005
Location: Delft, the Netherlands
Posts: 216
Default SikaFlex rules

We glued our tip-up canopy and it sure works fine. It is very important however to use the correct cleaner and primer. For more details view: http://websites.expercraft.com/PHVII...ry&log_id=6287
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  #5  
Old 10-22-2005, 08:38 PM
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kevinh kevinh is offline
 
Join Date: Jan 2005
Location: San Mateo, CA
Posts: 1,419
Default

I have about fifty hours on my RV-7A built using the RV sika instructions from sport aviation. I'm very happy with how it turned out.
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-kevinh, Track my RV-7A, flying, alas, sold in 2013 after 450ish hours. (I'm now building something different)
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  #6  
Old 10-23-2005, 05:06 PM
penguin penguin is offline
 
Join Date: Jan 2005
Location: England
Posts: 1,087
Default Which Sport Aviation

Which issue of Sport Aviation was the article published in? I must have skipped reading it.

Thanks, Pete
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  #7  
Old 10-23-2005, 06:33 PM
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kevinh kevinh is offline
 
Join Date: Jan 2005
Location: San Mateo, CA
Posts: 1,419
Default

Quote:
Originally Posted by penguin
Which issue of Sport Aviation was the article published in? I must have skipped reading it.
Alas - I've misplaced it now. It was about two years ago - an article by Chalkie <forgot last name> in South Africa. A very good write-up on how to use Sika to bond on a RV canopy.
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  #8  
Old 10-23-2005, 08:31 PM
Highflight Highflight is offline
 
Join Date: Jan 2005
Location: Houston, TX
Posts: 472
Default

I'm just about 99% decided myself that I will be going with a bonded on canopy soon, so I've done a little research myself.

Chalkie Stobbart is the name you're looking for, and here's a reference on the Matronics list that might point you in the right direction:

http://www.matronics.com/photoshare/...za.02.01.2004/
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Mattituck IO-360 (AFP) w/2 P-mags
Catto 3-Blade
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  #9  
Old 10-24-2005, 08:57 AM
tomcostanza tomcostanza is offline
 
Join Date: Jul 2005
Posts: 293
Default Clecos??

I would like to do it without any holes too. How did you stabilize the canopy while cutting front from rear? No holes = no clecos.
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  #10  
Old 10-30-2015, 06:43 PM
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Caummisar Caummisar is offline
 
Join Date: Jun 2007
Location: Idaho Falls, ID
Posts: 134
Default Sport Aviation Jan 2004

Quote:
Originally Posted by kevinh View Post
Alas - I've misplaced it now. It was about two years ago - an article by Chalkie <forgot last name> in South Africa. A very good write-up on how to use Sika to bond on a RV canopy.
Sport Aviation Jan 2004 pg 97
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