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12-02-2013, 09:53 PM
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Join Date: Nov 2005
Location: Davis, CA
Posts: 1,156
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Quote:
Originally Posted by rstisser
A few days ago I had a nasty surprise when a 20inch crack suddenly appeared right over my head in my slider after a cold weather flight. I am going to try to repair the crack with adhesive, but if that fix fails a replacement canopy will need to be fabricated. How does one remove the plexi when glued onto the frame?
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Razor blade. Took me 10 minutes. Easy. After that, used razor blades to trim off the excess remaining Sika from the frame. That took longer but it was still easy. Toss the blades when they seem dull. New Sika adheres tenaciously to the old.
__________________
Lars Pedersen
Davis, CA
RV-7 Flying as of June 24, 2012
960+ hours as of June 30, 2020. Where did the time go?
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12-16-2013, 10:39 AM
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Join Date: Jun 2006
Location: Illinois
Posts: 57
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sitkaflex
I did mine on my 6A slider. Only whole is for the canopy latch. Takes time, but came out great. Pics are at http://dmack.net/windscreen_glued_1.html
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Don Mack
RV-6A
N708CM
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01-01-2014, 02:10 PM
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Join Date: Mar 2010
Location: Cambridge, Mn.
Posts: 9
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Sikaflex canopy
I did my 6A slider 2yrs ago and have no problems. Would do it again.
I masked the area either side of the frame rails, applied primer after scuffing area lightly. Apply sikaflex and set frame into canopy, clamp lightly as needed.
Remove excess on both sides of rails with curved wood tool. Ensure your frame
is tweaked as needed to slide freely before you start process.
Walt
RV-6A
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01-03-2014, 08:48 PM
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Join Date: Jan 2005
Location: Hazlehurst, GA
Posts: 1,359
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SIKA RULES!!
Coarse sandpaper for the powder coat, prime, glue and clamp. 50 hours on my 6A and no issues! My drilled and riveted 8 canopy had to replaced at 200 hours. It was replaced with a Todd's canopy. It was SIKAed and is still flying without issue. There is no other way to attach the canopy IMHO.
__________________
IHN,
2020 Dues Paid
Robby Knox
THEM: Why do you always carry a knife?
ME: I can't open a bag of chips with my Glock!
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01-06-2014, 08:31 PM
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Join Date: Jan 2005
Location: Twin Cities, MN
Posts: 1,565
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Quote:
Originally Posted by rstisser
A few days ago I had a nasty surprise when a 20inch crack suddenly appeared right over my head in my slider after a cold weather flight. I am going to try to repair the crack with adhesive, but if that fix fails a replacement canopy will need to be fabricated. How does one remove the plexi when glued onto the frame?
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Was yours screwed or Sika'd on?
__________________
Brad Benson, Maplewood MN.
RV-6A N164BL, Flying since Nov 2012!
If you're not making mistakes, you're probably not making anything
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01-27-2014, 12:09 PM
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Join Date: Aug 2013
Location: UK
Posts: 160
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Here's where I've got to - That canopy's getting bigger all the time !
Serious question - does Sika have shelf life ? (unopened)
http://www.flickr.com/photos/115470196@N06/ |
01-27-2014, 01:26 PM
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Join Date: Sep 2007
Location: Central IL
Posts: 5,514
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Quote:
Originally Posted by Pittsartist
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Yes it does have a shelf life. Google the part number and you will find technical specs on the sika site. I think I saw a year - - - I am not (yet) using it for my canopy. I am screwed up, literally, for the canopy anyway. If it cracks I will go Sika.
Question, I looked at your site and see your bird is sitting on its gear. How wide are the outside of the wheel nuts? I wonder if I will get it out of my basement while on the gear. Thanks,
__________________
Bill
RV-7
Lord Kelvin:
“I often say that when you can measure what you are speaking about,
and express it in numbers, you know something about it; but when you
cannot measure it, when you cannot express it in numbers, your knowledge
is of a meager and unsatisfactory kind.”
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01-28-2014, 03:03 AM
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Join Date: Aug 2013
Location: UK
Posts: 160
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Quote:
Originally Posted by BillL
Yes it does have a shelf life. Google the part number and you will find technical specs on the sika site. I think I saw a year - - - I am not (yet) using it for my canopy. I am screwed up, literally, for the canopy anyway. If it cracks I will go Sika.
Question, I looked at your site and see your bird is sitting on its gear. How wide are the outside of the wheel nuts? I wonder if I will get it out of my basement while on the gear. Thanks,
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I've taken the engine and mount back off again to rivet the cowl hinges on so can't measure at the moment. The garage door and the cut lines in the concrete are 10' in the photos if that helps ? |
01-28-2014, 05:16 AM
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Join Date: Oct 2005
Location: Melbourne, Australia
Posts: 1,865
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Quote:
Originally Posted by rstisser
A few days ago I had a nasty surprise when a 20inch crack suddenly appeared right over my head in my slider after a cold weather flight. I am going to try to repair the crack with adhesive, but if that fix fails a replacement canopy will need to be fabricated. How does one remove the plexi when glued onto the frame?
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In January 2010 you stated on VansAirforce that you had used "Goof Off" on your canopy to remove paint overspray "with no ill effects".
It may be possible that the Goof Off contained a solvent that weakened the acrylic on your canopy even though you did not know it at the time.
In reality there are very few chemicals that you can safely use on acrylic to wash/clean it without damaging it at the molecular level.
If you have applied a solvent based cleaner to your canopy previously then it may well be that your canopy would have cracked regardless of whether it was held on by Sikaflex or by fasteners.
__________________
You’re only as good as your last landing 
Bob Barrow
RV7A
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