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Coating your Kite

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terryc
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Coating your Kite

Postby terryc » Mon Jul 29, 2019 8:59 am

So you want to coat ur sweet kite, here is how you do it...

Mix pure, new silicon sealant with turps/white spirit/mineral spirit (oudorless if possible). MIX thorughly then put into a clear water bottle and shake until the silicon is FULLY suspended, no lumps.

Apply two coats to the extrados 1st coat 5:1, then, leave overnight and then 2nd coat, 3:1 (3 parts white spirit,1 part silicon sealant). Be aware that the first coat will soak through and you dont want a slippery floor 😀. The turps evaporates fairly quickly the fully silicon cures up to 24hrs later

The extrodos (outer surface) takes all the wear as its pumped up, deflated, and packed away on the sand (or whatever). Also the extrados takes the main UV hit. Best to start treating the kite in the first year. Im hoping that one treatment will last the life of the kite as silicon doesnt not break down. We will see!

It can be applied applied a broad brush and cereal bowl. Kite must be dried flat.

The kite weight will increase by the about the weight of the silicon chaulk, but the canopy will not hold water as it is hopefully non-porous. The kite MAY still be lighter than original weight.Tear strengh improves, hang time inproves, wear is reduced.

For the LE you may wish to try the window film, for areas that touch the sand (not tried) or car wax wipes. If the LE bladder is out u can coat the whole kite in one go (u dont want to unglue valves, or contaminate the bladder). Ive never had a strut blow out, so why add to the weight.

I live in thailand, UV damage is a bitch. Everytime u use the kite it gets lighter. Prevention is better than cure (and MUCH cheaper).

c u on the water..

Doctor Terry 😀

PS..Hey, let me know how u get on!

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Bille
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Re: Coating your Kite

Postby Bille » Mon Jul 29, 2019 3:10 pm

terryc wrote:
Mon Jul 29, 2019 8:59 am
... Ive never had a strut blow out, so why add to the weight.

I live in thailand, UV damage is a bitch.
...
What kind of kite , do you use ?
How many years , do you have on average (one) kite ?

Bille

terryc
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Re: Coating your Kite

Postby terryc » Fri Aug 02, 2019 11:44 am

i have a few tubed kites. I treated my Rebel14m...they usually last a out 3 or 4 years in the tropics

Anyway, u can treat ur kite with just ONE tube of silicon, which when cured weighs .7kg, so shouldnt up the wieght of ur kite by much.

Also u need to mix the solution with a powered device, say an electric drill. A lump in the solution means a lump on the kite.

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Re: Coating your Kite

Postby FarQueLot » Fri Aug 02, 2019 12:30 pm

While you do this you can sprinkle sand or sugar on it to leave a nonskid surface making the kite safer

GTC
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Re: Coating your Kite

Postby GTC » Fri Aug 02, 2019 4:07 pm

terryc wrote:
Fri Aug 02, 2019 11:44 am
Anyway, u can treat ur kite with just ONE tube of silicon, which when cured weighs .7kg, so shouldnt up the wieght of ur kite by much.
If you mean 700g that's a LOT!! About 20-25% heavier in a 9m kite.

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Re: Coating your Kite

Postby Pemba » Fri Aug 02, 2019 4:42 pm

You mean the type of silicon used in bathrooms etc ? That just disolves like that ? It's an interesting idea but I call you a brave man treating your less than 1 year old kite with this. You've treated just the top or both sides ? I assume that kites are treated with some UV protection in the factory, it would be interesting if this actually works, though an extra 700 grams is pretty relevant. I might try it on a tarpaulin, they last about three months here before chunks start falling off, defeated by UV and gravity.

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Re: Coating your Kite

Postby Kapowski » Mon Aug 05, 2019 10:38 am

That sounds awesome but for the less adventurous (me included) there’s a product already developed...........

..https://www.nikwax.com/en-gb/products/p ... ductid=498

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jakemoore
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Re: Coating your Kite

Postby jakemoore » Mon Aug 05, 2019 3:10 pm

Nikwax repels water but does it improve porosity to air as would be needed for a sail or kite?

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Re: Coating your Kite

Postby Kitemenn » Mon Aug 05, 2019 3:47 pm

Kapowski wrote:
Mon Aug 05, 2019 10:38 am
That sounds awesome but for the less adventurous (me included) there’s a product already developed...........

..https://www.nikwax.com/en-gb/products/p ... ductid=498
Interesting...have you tried it yourself? Do you notice any effects? Looks like a cheap and easy solution to do!

Do you need to repeat it frequently?

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Re: Coating your Kite

Postby Rufusz » Mon Aug 05, 2019 5:47 pm

There is an old DWR thread here on KF about silicone and terpentine.
I applied the mixture to an old foil kite which was porous and the DWR layer was long gone and it worked like a charm.
Lasted about 1 season then it started sucking water again.

However the weight penalty was big as far as I remember and kite materials (at least foil kites) are so much better now that I don't see the point of applying anything any more.

I usually sell my kites after 3 yrs of use (3 kite quiver) and it's plenty of life left in them.

I guess it matters that I kite in Europe so UV is less of a problem here.


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