you cant really achieve that folding due to the fact some air will always remain inside. You can get close though. I find the best folding for traveling to be that 1 only a bit more planed

Attach pump the other way round (deflate). Suck as much air out as you can.

Wisha said...

Attach pump the other way round (deflate). Suck as much air out as you can.

be careful with this. ive looked into this a fair bit and this clip shows folding it best..


dont roll, fold.

because of air pressure changes (especially on planes) you need to leave the valves OPEN, so it can adjust to the changes. most manuals will tell you this. if you dont, you risk damaging the bladders. compression bags are only recommended if you lack room in your bag. if you're under the weight allowance, dont use one, as a problem ive found when packing them super tight is rubbing against the bridle knots. i place an old cloth or piece of foam over the biggest bridle attachment points on the LE, as last time i didnt, the knot had rubbed right through the kite fabric.
oh, and dont pack a pump. way too bulky and cheap to get or borrow where ever you're going!
have fun!

djdojo said...

volume = temperature (k)/pressure

there's nothing magic about the pressures in cargo holds. a 90% deflated kite may increase its volume a tiny bit as the pressure drops slightly more than the temperature, but unless you pack your kite fully inflated you have nothing to worry about.

do schools not teach the ideal gas laws any more?

Gees dojo,

Schools barely teach spelling and punctuation, what hope has Boyle got?

DM

Boyles Law is not really applicable here.

If you have 1psi in your kite bladder at sea level, the air in the bladder is also overcoming 14.7psi of atmospheric pressure.

Air pressure in a plane hold is about 10psi (say 5psi difference). The cargo hold of planes is pressurised!

So your 1 psi of pressure in the bladder would become 6psi of pressure in the plane.

So you would be basically packing your kite with inflated bladders (soft inflation) to have them possibly pop in a plane.

If you take a bike on a plane you don't worry about deflating the tyres as the pressure difference won't blow them out. A normally deflated kite won't be a problem.

Joelh said...

djdojo said...

volume = temperature (k)/pressure

there's nothing magic about the pressures in cargo holds. a 90% deflated kite may increase its volume a tiny bit as the pressure drops slightly more than the temperature, but unless you pack your kite fully inflated you have nothing to worry about.

do schools not teach the ideal gas laws any more?

thanks for your well educated input dodo. if, like me, you want to take every measure to preserve the thing that gives you so much pleasure, then you'll be following manufacturer guidelines over a forum's 'gas law professor'.

but professor, wouldn't a '90% deflated kite' DECREASE its volume as the pressure drops?????

call me dodo if you will, but i assure you that for a constant temperature, volume and pressure are inversely proportional.

in practical terms, say you put your partially inflated kite in a chamber and lets say start at one atmosphere - the pressure of unconstrained air at sea level.

with partial inflation, the pressure inside your kite is also one atmosphere as the bladder offers no resistance to a change in volume until it has some skin tension or is constrained by the leading edge or bladder tubes.

if you reduce the pressure in the chamber (by sucking air out) there is still just as much air in your kite. however, as there is less pressure on the outside of the bladder, the air inside it will expand until there is again equal pressure inside and outside the bladder. pressure goes down, volume goes up, and i hope you'll play the ball and not the man next time.

if you would truly care for that which gives you so much pleasure, i suggest you educate yourself about it. manufacturer's suggestions are an ok place to start, but their limitations are easily surpassed by an inquiring mind.

Taurus said...

Going travelling and want to fold my kite to same package as when originally taken out of the bag. Any instructions or how to out there?

Kites are North Rebel 2012.

Back to the topic. The Rebels are hard to fold up really small because they have so many battens in them. To get it smaller try taking out the bigger battens. And no your kite wont burst a balder in the aircraft, more likely to burst the kite bag if it tries to expand cos you leave your plugs in.

whenever I'm flying i roll my kites tight then wrap cling wrap around them........works a treat

'Yes, and when we run out of stuff to dig up and sell, what will we do then?'

Like has happened in Nauru since the superphosphate was mined out, we go broke and all look for somewhere else to live. Somewhere smarter where natural resources and the environment is respected and cared for, and the economy is based on making things we and others want to buy (like kites?). Maybe New Zealand?

All this means jack anyway!
Who puts their deflate valve back in after deflating anyway
At worst I put the velcro over the valve if I have a wet kite full of sand to help prevent the sand ending up inside the blader

djdojo said...

Joelh said...

djdojo said...

volume = temperature (k)/pressure

there's nothing magic about the pressures in cargo holds. a 90% deflated kite may increase its volume a tiny bit as the pressure drops slightly more than the temperature, but unless you pack your kite fully inflated you have nothing to worry about.

do schools not teach the ideal gas laws any more?

thanks for your well educated input dodo. if, like me, you want to take every measure to preserve the thing that gives you so much pleasure, then you'll be following manufacturer guidelines over a forum's 'gas law professor'.

but professor, wouldn't a '90% deflated kite' DECREASE its volume as the pressure drops?????

call me dodo if you will, but i assure you that for a constant temperature, volume and pressure are inversely proportional.

in practical terms, say you put your partially inflated kite in a chamber and lets say start at one atmosphere - the pressure of unconstrained air at sea level.

with partial inflation, the pressure inside your kite is also one atmosphere as the bladder offers no resistance to a change in volume until it has some skin tension or is constrained by the leading edge or bladder tubes.

if you reduce the pressure in the chamber (by sucking air out) there is still just as much air in your kite. however, as there is less pressure on the outside of the bladder, the air inside it will expand until there is again equal pressure inside and outside the bladder. pressure goes down, volume goes up, and i hope you'll play the ball and not the man next time.

if you would truly care for that which gives you so much pleasure, i suggest you educate yourself about it. manufacturer's suggestions are an ok place to start, but their limitations are easily surpassed by an inquiring mind.