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Folding Kayaks Forum • View topic - Pakboat sponsons for Sonnet 14

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It is currently Tue Feb 18, 2020 11:38 pm

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PostPosted: Thu Feb 04, 2010 9:58 am 
Hello, due to difficulties with making the homemade sponsons airtight, I am considering to buy a pair of Pakboats Puffin II (or Saranac) double sponsons. The Puffin II sponsons are 4m in length and about 11cm diameter per bladder (i.e. 22 cm height +2cm gap for one double sponson).

The side stringer would fit into the gap between the two bladders (or, one could also cut the two bladders apart, as they each have separate valves).

The only drawback is that the valves are not centered but close to the ends of the sponsons. One would have to attach some 2m hoses...)

Price is about 80.- Euros for a pair here in germany.

Does anyone have experience with using Pakboat sponsons for the Sonnet?

Thanks a lot


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PostPosted: Fri Feb 05, 2010 11:16 am 


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PostPosted: Sat Feb 06, 2010 9:19 am 
yes the inflated diameter is 11cm. There are also Puffin "Saranac" sponsons available with a length of 460 cm, mybe i'll consider those over the Puffin II sponsons.. anyway thanks for the quick reply an thanks for maintaining the yostwerks website, it is simply magnificient!


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PostPosted: Sat Feb 06, 2010 11:01 am 


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PostPosted: Sun Feb 07, 2010 8:57 am 
I just asked my local dealer and they can order the sponsons in 48h..
I think I'll use the 460cm sponsons for the 14' Sonnet, as the overlenght will fold inside the sponson sleeves...

The only problem with the dual sponsons could be the process of inflating them inside the sleeves, because they are not automatically positioned with only one "big" sleeve holding a pair of sponsons.

What I'm considering to solve this ist to cut the two sponsos apart on the center seam...

Thanks also for the hint with the keel diameter, I'm now using 23,5cm diameter for the center and 20mm for the stems, hoping that will provide enough rigidity...

greetings,
rajanski


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