Positive buoyancy foy kayak

Discussion of safety equipment and use.
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Dodge
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Re: Positive buoyancy foy kayak

#16 Post by Dodge » Wed Jan 13, 2016 9:02 am

laneends wrote: empty sealed plastic soft drink bottles are an option also
Plakkyboat wrote: Maybe bottles would last longer and be cheap and easy to replace or remove.
Saw a bloke do this at a ramp one time, had a cord tied to handle of a 2L milk bottle, and on the cord was then threaded a daisy chain thru handles of more bottles, opened the yak hatch and just fed them in, closed hatch and onto the water. an easy replaceable method..

Can also remember a post on an old forum where an O.K. P13 was put in a pool and filled with water, from memory it supported about 3 blokes but was not able to be sat on or paddled.

Think if I was going for flotation, I would just buy an inflatable [when on special], and tie it onto front deck.
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laneends
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Re: Positive buoyancy foy kayak

#17 Post by laneends » Wed Jan 13, 2016 4:22 pm

It is actually hard to sink an intact SOT if hatches are closed as there is always likely to be an air pocket somewhere,. Especially if it turtles without a crack in the bottom

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AshG
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Re: Positive buoyancy foy kayak

#18 Post by AshG » Wed Jan 13, 2016 4:27 pm

Yeah I have a few holes drilled in the deck that need to be there, and they're at the highest point, hence the need for floaties

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Re: Positive buoyancy foy kayak

#19 Post by gbc » Wed Jan 13, 2016 8:03 pm

simons rat wrote:
Buy a can of spray foam (Bunnings) with a filler tube connected to the the spray can.
be careful of this ... some filler foam actual absorbs water.

Make sure you get foam that says it is designed for boat building.

Cheers,

S
Pretty much everything you buy in a pressure pack at a hardware (sika boom, space invader etc) is open cell and carries specific warnings on the can against trying to use for floatation purposes.

Floatation foam is general 2 pack and sold in tins.

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yaqdoq
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Re: Positive buoyancy foy kayak

#20 Post by yaqdoq » Wed Jan 13, 2016 9:43 pm

Get a tyre ( small ) innertube and and loosely attach or wedge in the place you want before partially inflating . As it expands it should wedge even more tightly . Lasts a couple of years in a white waterboat and easy to do , replace , retrieve and cheap .

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Re: Positive buoyancy foy kayak

#21 Post by Plakkyboat » Thu Jan 14, 2016 2:50 pm

yaqdoq wrote:Get a tyre ( small ) innertube and and loosely attach or wedge in the place you want before partially inflating . As it expands it should wedge even more tightly . Lasts a couple of years in a white waterboat and easy to do , replace , retrieve and cheap .
Great idea YD but wouldn't an empty wine cask work as well, if not better... not to mention the fun in making it empty..... :grin:
Cheers -- Paul
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Re: Positive buoyancy foy kayak

#22 Post by gbc » Thu Jan 14, 2016 3:01 pm

Just for interest sake, when I worked for AMSA we did some oil spill stuff in case there was a huge catastrophe in our part of the world. They actually have shipping containers full of ping pong balls in bags ready to be loaded into a sinking ship's hold. The maintain their structural integrity under load and can be sucked back out again. So theres another way to skin the cat - if not totally impractical.

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yaqdoq
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Re: Positive buoyancy foy kayak

#23 Post by yaqdoq » Thu Jan 14, 2016 6:09 pm

Plakkyboat wrote:
yaqdoq wrote:Get a tyre ( small ) innertube and and loosely attach or wedge in the place you want before partially inflating . As it expands it should wedge even more tightly . Lasts a couple of years in a white waterboat and easy to do , replace , retrieve and cheap .
Great idea YD but wouldn't an empty wine cask work as well, if not better... not to mention the fun in making it empty..... :grin:

Wine casks are not so good as they do not hold air as well as inflatable ( nor do they conform to spaces as well as an inflatable inner ) .

However , once emptied the creative juices will allow for exceptional creativity .

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pavo
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Re: Positive buoyancy foy kayak

#24 Post by pavo » Fri Jan 15, 2016 4:26 am

You can also try a car iner tube push it in where you want it and SLOWLY inflation to desired size.

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Re: Positive buoyancy foy kayak

#25 Post by Plakkyboat » Sat Jan 16, 2016 3:15 pm

pavo wrote:You can also try a car iner tube push it in where you want it and SLOWLY inflation to desired size.
This may not 'conform' to standard thinking but I wonder if inflated condoms (unused) with a knot tied at the opening would work as well and be cheaper than a tyre tube.... :?:
Yaqdoq wrote:
Wine casks are not so good as they do not hold air as well as inflatable ( nor do they conform to spaces as well as an inflatable inner ) .

However , once emptied the creative juices will allow for exceptional creativity .
Now those creative juices are workin'.... :gu:
Cheers -- Paul
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Re: Positive buoyancy foy kayak

#26 Post by tonystott » Sat Jan 16, 2016 6:13 pm

Plakkyboat wrote:
pavo wrote:You can also try a car iner tube push it in where you want it and SLOWLY inflation to desired size.
This may not 'conform' to standard thinking but I wonder if inflated condoms (unused) with a knot tied at the opening would work as well and be cheaper than a tyre tube.... :?:

SNIP:
You are just relishing the embarrassed look on the young pharmacy assistant when faced with an order for a gross of condoms! :lol: :lol: :lol:
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AshG
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Re: Positive buoyancy foy kayak

#27 Post by AshG » Sat Jan 16, 2016 7:45 pm

flotation frangers lol

nah, noodles will do just fine I think...

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Re: Positive buoyancy foy kayak

#28 Post by somaly » Wed Jun 01, 2016 10:52 pm

simons rat wrote:
Buy a can of spray foam (Bunnings) with a filler tube connected to the the spray can.
be careful of this ... some filler foam actual absorbs water.

Make sure you get foam that says it is designed for boat building.

Cheers,

S


WARNING WARNING WARNING

hey all, do not use foam from the can (single component) and do not use polystyrene beads.

contact me for free advice, I am an industrial chemist specialise in polyurethane.

cheers
somaly
somalyt@ausurethane.com.au

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nobrandbali
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Re: Positive buoyancy foy kayak

#29 Post by nobrandbali » Fri Jun 03, 2016 1:06 pm

just chuck in pool noodle inside the kayak, and take them out storage when you finish, cheap, clean and easy enough

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Re: Positive buoyancy foy kayak

#30 Post by AshG » Fri Jun 03, 2016 3:51 pm

thanks, I have 4x pool noodles stuffed in the hull, will be more than enough thanks for the replys, well, some of them anyways :lol:

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