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Old 24 February 2009, 16:26   #11
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Has anyone used Cyanoacrylate for such jobs - it is very good on all sorts of rubbers. i know it sets too quick but it can wick into a joint by capillary action.
Cyano does not flex so would probably be the last thing you would want to use on rubber and hypalon.

Also I dont think it would take to rubber as it needs to be absorbed to work properly.
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Old 24 February 2009, 16:53   #12
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OK so why two pieces you could do that with one long piece all the way round...

Tips from me include after you have applied the strake run a bead of sikaflex under the bottom edge of the strake particulary the last 1/3 of the strake on either side toward the back end.

Then Dip your finger in some fairy liquid and water (50/50) then smooth over the sikaflex for glass perfect finish. This will prevent water spraying up and lifting that bottom edge off the tube.


I would wait for summer to do this or find some space indoors that can be heated.

Prime the strake with a coat of glue and leave to dry for 24 hours then apply another priming coat when you do the first priming coat Hypalon then one final coat So 3 coats on the strake and 2 on the Hypalon (you could do 3 on the Hypalon if you wanted.)

Otherwise its not as scary as it sounds just be methodical and prep the areas well.
Thanks for the advice Chris. I think a better photo will help to explain which part I'm replacing as taking one long strip all the way around would be impractical. I'll dig a photo out and post it later.
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Old 24 February 2009, 20:42   #13
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Cyano does not flex so would probably be the last thing you would want to use on rubber and hypalon.

Also I dont think it would take to rubber as it needs to be absorbed to work properly.


Cyano is used all the time in industry for gluing rubber - it is the glue of choice. We used to use it for gluing rubber gaiters to ABS plastic bezels - use a bit of activator to speed up drying.

They are used extensively for bonding O rings and all sorts of rubber components. They even use it to glue people's eyes and brains together - truly a "super" glue!!!
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Old 24 February 2009, 21:07   #14
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Quote:
Originally Posted by codprawn View Post
Cyano is used all the time in industry for gluing rubber - it is the glue of choice. We used to use it for gluing rubber gaiters to ABS plastic bezels - use a bit of activator to speed up drying.

They are used extensively for bonding O rings and all sorts of rubber components. They even use it to glue people's eyes and brains together - truly a "super" glue!!!
Cyano will not work. it is brittle and fails if exposed to moisture continuously.
I have been using it for 30+ years and understand it's limitations. It will also cause some plastics, styrene for example, to craze and crack. It is true that it is often used for temporary holding parts in place, ie. fixturing.
I guess LR's must be put togeher with Superglue.
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Old 24 February 2009, 22:13   #15
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http://www.drsfostersmith.com/produc...5&pcatid=18325

What about this then? Used for gluing coral and rocks in aquariums - I would have thought they were pretty moist.............
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Old 25 February 2009, 00:11   #16
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Depends on how many prawns are in it.
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Old 25 February 2009, 11:22   #17
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They are used extensively for bonding O rings and all sorts of rubber components. They even use it to glue people's eyes and brains together - truly a "super" glue!!!
Last I checked, eyes and brains are not made of rubber.

The problem with cyanoacrylates is that, once set, they don't flex or stretch, two things that RIB tubes do (at least to a small extent.) End result is the bond failing.


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Also I dont think it would take to rubber as it needs to be absorbed to work properly.
Not sure that's true; two flat pieces of metal can be quite permanently glued with CA.


Quote:
Originally Posted by Codprawn
What about this then? Used for gluing coral and rocks in aquariums - I would have thought they were pretty moist.............
Corals don't flex and stretch much, either.

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Old 25 February 2009, 11:50   #18
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Rubber belllows and gaiters do though and they are used extensively for that!!!
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Old 25 February 2009, 14:59   #19
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OK feel free to use it on your rib I think I will just stick to the well proven hypalon glue.
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Old 25 February 2009, 15:11   #20
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It could have advatages. If a rubbing strake is peeling slightly at the edges you could run a bit of superglue along the edge and just press together. If it fails you will have to prepare it properly anyway. Sounds like there would be nothing to lose by trying it!!!
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