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What canopy adhesive to use?



 
 
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  #1  
Old August 14th 17, 06:04 PM posted to rec.aviation.soaring
LongJourney
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Posts: 33
Default What canopy adhesive to use?

I've done a search in both RAS and on the web but I'm not finding the information I'm looking for. I'm restoring a 1963 S Austria and one of the previous owners used what I think is Sikaflex to bond the canopy glass to the metal canopy frame. It's now separating badly. What should I use to bond the plexiglass to the frame? And should I prime the metal frame and then scuff it where the glass will be bonded, or leave it bare until after the glass is glued on?

Thanks for your help,

Jeff
  #2  
Old August 14th 17, 06:27 PM posted to rec.aviation.soaring
AS
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Posts: 653
Default What canopy adhesive to use?

On Monday, August 14, 2017 at 1:04:16 PM UTC-4, LongJourney wrote:
I've done a search in both RAS and on the web but I'm not finding the information I'm looking for. I'm restoring a 1963 S Austria and one of the previous owners used what I think is Sikaflex to bond the canopy glass to the metal canopy frame. It's now separating badly. What should I use to bond the plexiglass to the frame? And should I prime the metal frame and then scuff it where the glass will be bonded, or leave it bare until after the glass is glued on?

Thanks for your help,

Jeff


Jeff,

do you know which Sikaflex product was used? The stuff we use in all sorts of applications on wind turbines is type 221 and it is a Urethane sealant/glue which is incredibly UV and weather resistant. Our preferred color is white but it comes in different colors, too.

Uli
'AS'

  #3  
Old August 14th 17, 06:29 PM posted to rec.aviation.soaring
AS
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Posts: 653
Default What canopy adhesive to use?

On Monday, August 14, 2017 at 1:27:30 PM UTC-4, AS wrote:
On Monday, August 14, 2017 at 1:04:16 PM UTC-4, LongJourney wrote:
I've done a search in both RAS and on the web but I'm not finding the information I'm looking for. I'm restoring a 1963 S Austria and one of the previous owners used what I think is Sikaflex to bond the canopy glass to the metal canopy frame. It's now separating badly. What should I use to bond the plexiglass to the frame? And should I prime the metal frame and then scuff it where the glass will be bonded, or leave it bare until after the glass is glued on?

Thanks for your help,

Jeff


Jeff,

do you know which Sikaflex product was used? The stuff we use in all sorts of applications on wind turbines is type 221 and it is a Urethane sealant/glue which is incredibly UV and weather resistant. Our preferred color is white but it comes in different colors, too.

Uli
'AS'


Meant to add: as long as the surface is free of dust, dirt and grease, it sticks to just about anything without any special surface prep.
  #4  
Old August 15th 17, 05:59 AM posted to rec.aviation.soaring
LongJourney
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Posts: 33
Default What canopy adhesive to use?

On Monday, August 14, 2017 at 12:27:30 PM UTC-5, AS wrote:
On Monday, August 14, 2017 at 1:04:16 PM UTC-4, LongJourney wrote:
I've done a search in both RAS and on the web but I'm not finding the information I'm looking for. I'm restoring a 1963 S Austria and one of the previous owners used what I think is Sikaflex to bond the canopy glass to the metal canopy frame. It's now separating badly. What should I use to bond the plexiglass to the frame? And should I prime the metal frame and then scuff it where the glass will be bonded, or leave it bare until after the glass is glued on?

Thanks for your help,

Jeff


Jeff,

do you know which Sikaflex product was used? The stuff we use in all sorts of applications on wind turbines is type 221 and it is a Urethane sealant/glue which is incredibly UV and weather resistant. Our preferred color is white but it comes in different colors, too.

Uli
'AS'


Uli, I'm not even sure it IS Sikaflex. I was told by someone that it was the same stuff they use on RV canopies. What's on my canopy is a black, rubbery adhesive.

Thanks,

Jeff
  #5  
Old August 15th 17, 09:10 AM posted to rec.aviation.soaring
[email protected]
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Posts: 83
Default What canopy adhesive to use?

The repair manual of my LS8 lists the following material as canopy bonding agent: Macroplast UK8303 B60 (resin), Macroplast UK5400 (hardener). It's a PU based glue available from Loctite and other brands.

Christoph
  #6  
Old August 15th 17, 04:03 PM posted to rec.aviation.soaring
LongJourney
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Posts: 33
Default What canopy adhesive to use?

On Tuesday, August 15, 2017 at 3:10:38 AM UTC-5, wrote:
The repair manual of my LS8 lists the following material as canopy bonding agent: Macroplast UK8303 B60 (resin), Macroplast UK5400 (hardener). It's a PU based glue available from Loctite and other brands.

Christoph


Christoph, this looks like just what I need. Unfortunately, it doesn't seem to be readily available in the U.S.
  #7  
Old August 15th 17, 04:04 PM posted to rec.aviation.soaring
LongJourney
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Posts: 33
Default What canopy adhesive to use?

On Monday, August 14, 2017 at 11:59:05 PM UTC-5, LongJourney wrote:
On Monday, August 14, 2017 at 12:27:30 PM UTC-5, AS wrote:
On Monday, August 14, 2017 at 1:04:16 PM UTC-4, LongJourney wrote:
I've done a search in both RAS and on the web but I'm not finding the information I'm looking for. I'm restoring a 1963 S Austria and one of the previous owners used what I think is Sikaflex to bond the canopy glass to the metal canopy frame. It's now separating badly. What should I use to bond the plexiglass to the frame? And should I prime the metal frame and then scuff it where the glass will be bonded, or leave it bare until after the glass is glued on?

Thanks for your help,

Jeff


Jeff,

do you know which Sikaflex product was used? The stuff we use in all sorts of applications on wind turbines is type 221 and it is a Urethane sealant/glue which is incredibly UV and weather resistant. Our preferred color is white but it comes in different colors, too.

Uli
'AS'


Uli, I'm not even sure it IS Sikaflex. I was told by someone that it was the same stuff they use on RV canopies. What's on my canopy is a black, rubbery adhesive.

Thanks,

Jeff


After reading some RV builder sites, I'm thinking what was used on my canopy was Proseal, not Sika.
  #8  
Old August 15th 17, 04:06 PM posted to rec.aviation.soaring
Dave Nadler
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Posts: 1,610
Default What canopy adhesive to use?

On Tuesday, August 15, 2017 at 3:10:38 AM UTC-5, wrote:
The repair manual of my LS8 lists...


Careful, that's for bonding plexi to IIRC fiberglass canopy frame.
1963 Austria probably uses different material for frame.
Better ask on some of the vintage forums!
  #9  
Old August 15th 17, 04:28 PM posted to rec.aviation.soaring
Steve Leonard[_2_]
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Posts: 1,076
Default What canopy adhesive to use?

On Tuesday, August 15, 2017 at 10:04:50 AM UTC-5, LongJourney wrote:

After reading some RV builder sites, I'm thinking what was used on my canopy was Proseal, not Sika.


Pretty sure it is NOT Proseal. When that stuff cures, it is stuck. It doesn't seem to deteriorate with heat, moisture, UV exposure, or anything. Yes, it is a black (or very dark gray), sort of rubbery when cured adhesive. But from my experience, it will not fail. The plex will break, or the steel tube frame can rust away, but the Proseal will not separate.

I was once told that 3M 5200 is great stuff, but I have not used it, myself.. I think you can find it referenced in another thread here on gluing stuff together.

Steve Leonard

  #10  
Old August 15th 17, 04:38 PM posted to rec.aviation.soaring
Eric Munk
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Posts: 179
Default What canopy adhesive to use?

L285/L335 with microballoons was used by a large number of german and
polish manufacturers. Poles usually apply Aerodux and grind that down as a

primer to make the epoxy stick to the plexi. Alternatively, using a
polyesther
instead of an epoxy makes for a stronger joint but significantly shorter
potlife
(minutes not hours). I have seen various other modern kits used too. Some
with great succes.


At 15:28 15 August 2017, Steve Leonard wrote:
On Tuesday, August 15, 2017 at 10:04:50 AM UTC-5, LongJourney wrote:
=20
After reading some RV builder sites, I'm thinking what was used on my

can=
opy was Proseal, not Sika.

Pretty sure it is NOT Proseal. When that stuff cures, it is stuck. It
doe=
sn't seem to deteriorate with heat, moisture, UV exposure, or anything.
Ye=
s, it is a black (or very dark gray), sort of rubbery when cured

adhesive.
=
But from my experience, it will not fail. The plex will break, or the
ste=
el tube frame can rust away, but the Proseal will not separate.

I was once told that 3M 5200 is great stuff, but I have not used it,
myself=
.. I think you can find it referenced in another thread here on gluing
stuf=
f together.

Steve Leonard



 




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