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patching sponsons
http://foldingkayaks.org/phpBB/viewtopic.php?f=5&t=7174
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Author:  treewater [ Sat Jul 01, 2017 7:58 am ]
Post subject:  patching sponsons

I tried to patch the sponsons on my Citibot. I used air mattresses cement. It did not hold.
Any suggestions?

Author:  RangerTim [ Sat Jul 01, 2017 9:13 am ]
Post subject:  Re: patching sponsons

You could try Aquaseal. If just a pinhole, you could get by without a patch. Note that Aquaseal is runny.

Author:  GrnMtns [ Sat Jul 01, 2017 4:16 pm ]
Post subject:  Re: patching sponsons

If it is just a seam try a hot iron first.
PM me if you want new ones.

Author:  HoosierPaddler [ Mon May 07, 2018 9:09 pm ]
Post subject:  Re: patching sponsons

You mention using a hot iron. Exactly how, without damaging the sponson? I am chasing leaks all over a Kodiak sponson. Latest is at the very end of one tube.

GIIx2, Kodiak, Edisto, Citibot

Author:  GrnMtns [ Mon May 07, 2018 9:47 pm ]
Post subject:  Re: patching sponsons

The newer yellow Folbot Sponsons are pretty rugged. The iron has to he quite hot and applied briefly to the leak area. Experiment. You can reheat the area if it does not bond. I have only done it a few times and it seems to hold OK. I can have new ones made to exact lengths if yours won't hold air.

Author:  HoosierPaddler [ Tue May 08, 2018 7:45 am ]
Post subject:  Re: patching sponsons

Unfortunately these are not the newer sponsons. This particular Kodiak is probably an earlier production run, vinyl or similar sponsons, blue aluminum longerons, poly frame members and hypalon hull. I'll try the iron.

How are you able to make sponsons? I've debated just searching for appropriately sized "pool noodles" or similar pipe wrap. I figure that might create issues put too much tension on the skin while assembling the kayak, zipping up the hull. Might have to use multiple sections.

Hoosier Paddler
GII x2
Kodiak
Edisto
Citibot

Author:  GrnMtns [ Tue May 08, 2018 7:59 am ]
Post subject:  Re: patching sponsons

Hi Jules,
I have a have 6" flat x any length sponson laminated poly material that we heat weld in the shop: http://sailyourkayak.com/replacement-sponsons/
Best,
Jon

Author:  Alv [ Tue May 08, 2018 3:11 pm ]
Post subject:  Re: patching sponsons

The iron should work if the tube has welded seam, but you need to be careful. Start with a fairly cold iron, and crank up the heat gradually. You need to get the iron hot enough to melt the coating, but not so hot that you damage the substrate (the woven fabric). Press the seam together with the iron until the surfaces fuse together.

Good luck!

Author:  HoosierPaddler [ Tue May 08, 2018 3:16 pm ]
Post subject:  Re: patching sponsons

This is the old style sponson, heavy, shower curtain like material. No woven fabric to worry about. The leak at the end of the tube is right along the interior edge of the previous (original) heating and cutting of the end of the sponson. Right along what would be a crease when you inflate the sponson.

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