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Posted

They are made of polyurethane, it's the same stuff they use to make breathable membranes for clothing, like Goretex. It works because its thick, but technically they are leaking the whole time albeit ever so slowly but its why they go down if you leave them overnight.

 

I used to work for a bit with Airtime in the Gorge one summer, so know a bit about bladders. The Airtime is the best on the market, and rumour is they got some new one due out soon which is even more resistant to puncture.

 

You buy the bits and make them yourself, haven't seen them over here.

Posted
Normally made from recycled Johnnys

 

Imagine working there, at the jonny re-cycling factory:eek::confused::(

 

And where in the country has got a jonny re-cycling bin please?

 

 

Funny I've bust loads of jonnys but i've never bust a bladder!(and i've definately done more kiting!) Re-cycling must make them stronger...

Posted
.....They are made of polyurethane,.

 

Time to geek out:D

 

TPU (Thermoplastic Polyurethane) sold in UK as Tuftane

Most TPU's are based on MDI (Methylene diphenyl isocyanate) as the isocyanate(hard segment), while the polyol (soft segment) is widely varied. The main distinction is between polyether or polyester polyols:

  • Polyether Polyols - best hydrolysis and microbiological attack resistance.
  • Polyester Polyols - best tear and chemical resistance.

Melt point is about 140 C, so you can weld the seams with a bag sealer or

electric iron.

Thickness used for some kite bladders 0.08 mm

 

Cost £400 for 70 Kilo roll from UK suppliers ... Permali

 

http://customkiteboard.com/imagesKite1/TuftaneSmall.JPG

 

Free sample was enough to build complete set of bladders:D

http://customkiteboard.com/imagesKite2/BladderValvesMed.jpg

Posted

before polyurathenes they were made from monkey guts in the cheap ones or cow guts in the better ones as they were thicker

 

one kite manuacturer named their brand after the process of obtaining the bladder which was the biggest part of the kite making process

 

it was called gashing out where the worker had to insert his arm up the rearend of the cow and pull out the intestines

 

subsiquently they called the company gash but afer several meetings decided this was not an apealing name but could not think of anything else so changed it to not gash which eventually got shortend to naish

 

and there ends your history lesson:)

Posted
before polyurathenes they were made from monkey guts in the cheap ones or cow guts in the better ones as they were thicker

 

one kite manuacturer named their brand after the process of obtaining the bladder which was the biggest part of the kite making process

 

it was called gashing out where the worker had to insert his arm up the rearend of the cow and pull out the intestines

 

subsiquently they called the company gash but afer several meetings decided this was not an apealing name but could not think of anything else so changed it to not gash which eventually got shortend to naish

 

and there ends your history lesson:)

Interesting story, the obvious one I thought of was Monkey Kites!

Posted

by the sounds of things you have bigger problems shed head

 

"salad butty" !!!!!!

 

HTFU what kind of sarnie is that get some meat in ya diet.

 

maybe hook up with pooly, I know he is deserate to get some meat in his diet too :eek:

 

:D

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