Kiting in the rain

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pharro
pharro
WA
89 posts
WA, 89 posts
17 Mar 2009 2:09pm
At the risk of receiving smartass answers about getting your kite wet.
Anyone ever have any problems kiting in the rain?
Obviously its wise to avoid thunderstorms and the lightning risk, but are there any other factors that affect you when kiting when its raining.
Having never done it I was wondering if the weight, direction etc of rain has any affect on the kite at all?
sebol
sebol
WA
753 posts
WA, 753 posts
17 Mar 2009 2:27pm
I have been out there on many occasions in winter storms and i found it to be no problem.
The kite feels a bit heavier but it is no major drama.
The only real issue is the constent whiping in the face from the rain but it also smoothen the surface of the ocean.
In summary, not ideal but if you are hanging out for a kite,go for it.
snoopy
snoopy
NSW
116 posts
NSW, 116 posts
17 Mar 2009 4:44pm
Went out sunday before last whilst it was pooring. Had a great time. Only thing is packing up your kite, wet kite with sand everywhere. Not sure how other people deal with this?
Miss Jessie
Miss Jessie
NSW
181 posts
NSW, 181 posts
17 Mar 2009 4:51pm
I personaly love it. The undrafts you can get when its bucketing are brilliant... But yes the setting up and packing up in the rain is a pain and while its damn worth it when your out there its a wet mess before and after. Your kite itself will be a bit sluggish-make sure you pump it up good, but will be fine!

So the question is... Who's up for it tonight???
rloemker
rloemker
NSW
149 posts
NSW, 149 posts
17 Mar 2009 5:37pm
Since rain is mostly freshwater and your kite would get fairly went (and assuming you don't crash it), would this mean you should totally dry your kite before packing away? I have been told that the salt preserves the kite and should you wash your kite with fresh water, you should also hang it on the line to completely dry before packing away...due to mould etc.
GreenPat
GreenPat
QLD
4107 posts
QLD, 4107 posts
17 Mar 2009 4:40pm
I'd be dubious about the theory that salt preserves your kite. When salt water dries it leaves fine salt crystals behind which can be sharp and abrasive. I think this would reduce the life of your kite rather than preserve it. Just my opinion.
Wannabe
Wannabe
NSW
148 posts
NSW, 148 posts
17 Mar 2009 5:41pm
when your going really fast, rain really hurts

The idea behind salt preserving gear is the mould and similar **** grow in places where it is damp and moist, however the presence of the salt prevents such growth. Personally i prefer to wash my gear and leave it in the boat shed to dry but i understand this is not a luxury most people have.
lovey
lovey
NSW
177 posts
NSW, 177 posts
17 Mar 2009 6:49pm
orright, on my third beer and the inner geek is coming out... just a question i've often pondered when out kiting in the rain (which sucks, by the way)

If you had a 20kt rainy southerly, would it have more "power" (for want of a better word) than a 20kt NE, because the air is wetter and denser and therefore had more mass?


noosa kiter
noosa  kiter
65 posts
65 posts
17 Mar 2009 4:54pm
kiting in the rain is awesome, its so fun.

and when packing up i land on some grass or wherever its not sandy, then after i dunk my kite in the ocean to get the freshwater off. (obviously close the valves etc etc..)
KitingCasey
KitingCasey
QLD
242 posts
QLD, 242 posts
17 Mar 2009 6:08pm
I mean if its not that windy then its not a great idea because yes your kite does get heavier...but if not then no...no problem at all in fact its really quite fun haha
rhinoman
rhinoman
QLD
362 posts
QLD, 362 posts
17 Mar 2009 6:30pm
if you like kiting in the rain and still want a fast kite try coating it with holmenkol[ seal and glide]its like rainX for your kite ,water just beads off . put it on all my kites no problems with the material ,I know briskites sell this stuff you should ask your local kite shop if they can get it in ,0ne bottle does about 4 12mtr kites
surfoil66
surfoil66
NSW
89 posts
NSW, 89 posts
17 Mar 2009 8:53pm
lovey said...

orright, on my third beer and the inner drunkard is coming out... just a question i've often pondered when out kiting in the rain (which sucks, by the way)

If you had a 20kt rainy southerly, would it have more "power" (for want of a better word) than a 20kt NE, because the air is wetter and denser and therefore had more mass?





i always think that is possible and i always get driven when its a southerly, but wind graphs tell me my windest sessions are in the NE winds. Sure the southerlys are gustier so this helps me getting pounded. or maybe having a wet kite fills all the minute holes with water and it flys harder. i'll just finish this case and ponder some more..
GalahOnTheBay
GalahOnTheBay
NSW
4188 posts
NSW, 4188 posts
18 Mar 2009 7:15pm
looking upwind in decent wind and rain sucks

Kiting in the rain is not (usually) much fun.

On the plus side the water is flatter but the wind can be squally. Oh and if there is any lightning / staic electricity around you had best forget about it...

Then again, on those epic 30kt 10ft days what else is a kiter to do?
getfunky
getfunky
WA
4485 posts
WA, 4485 posts
18 Mar 2009 5:46pm
GreenPat said...

I'd be dubious about the theory that salt preserves your kite. When salt water dries it leaves fine salt crystals behind which can be sharp and abrasive. I think this would reduce the life of your kite rather than preserve it. Just my opinion.


Had a chat to a kite repair dude this week who is adamant the majority of tears he sees are from salt encrutsed kites and that the salt residue weakens the fabric.

Makes sense to me.

bennie
bennie
ACT
1258 posts
ACT, 1258 posts
18 Mar 2009 8:04pm
lovey said...

orright, on my third beer and the inner geek is coming out... just a question i've often pondered when out kiting in the rain (which sucks, by the way)

If you had a 20kt rainy southerly, would it have more "power" (for want of a better word) than a 20kt NE, because the air is wetter and denser and therefore had more mass?





the air pressure is denser in a low pressure system than from a high pressure system. Thus wind from a low packs more punch than wind from a high. Eg here in NSW a 10knt southerly will get me on the water, but a 10 knt NE will leave me sitting on the beach. I think an analagy you could use would be to compare the force of being hit at 20km/h by a bus as compared to a hatchback.

Also I have had a couple of kitemares kiting in the rain. Quite often the rain will kill the wind. Not good if you are out the back on a 6 foot day 500m from shore. I have had the wind go from 20knts to less than 5 in less than 5 mins. If it starts to rain and I am out I always stay real close too shore.
mjaygray
mjaygray
WA
125 posts
WA, 125 posts
18 Mar 2009 6:04pm
kiting in the rain is *epic*

the positives outway the negatives A LOT ... that 'getting wet feeling while being wet' is sweet as; your face feels refreshed (despite the stinging ) due to that clean rain water, and you don't have to worry about dropping the kite cause its already soaked!

only real negative is the potential danger...was out yesterday, rain came through -with a front - and in the space of a couple seconds it got 10knots stronger (which was good 'cause it was fairly light). But at other times it's just started NUKING & everyone was purposely dropping their kites in the water to miss the squal. So....keep checking UPWIND to see what the weather conditions & clouds are doing. at other times the wind has dropped COMPLETLEY.

BUT taking all that into account...

U GOTTA TRY IT MATE!!!
jackal
jackal
WA
20 posts
WA, 20 posts
18 Mar 2009 8:50pm
benny is on the money,
wind will have more force but a greater chance of dying suddenly (especially in WA)
Jackal
general_dude
general_dude
WA
150 posts
WA, 150 posts
18 Mar 2009 9:23pm
lovey said...

orright, on my third beer and the inner geek is coming out... just a question i've often pondered when out kiting in the rain (which sucks, by the way)

If you had a 20kt rainy southerly, would it have more "power" (for want of a better word) than a 20kt NE, because the air is wetter and denser and therefore had more mass?





Feeling bored & geeky to.
No expert but feel like blah ing on with what I do know.....

I think rain is not going to give you more power, but lets talk about temperature.
Wind energy (not quite the same as force by the way) is related to velocity cubed & density. So denser air should be more 'powerful' but the effect is not nearly as dramatic as higher wind speed.
Air is compressable so air will be denser if at higher pressure and at the same temp.
Air also expands when heated - PV=mRT
most of the time this means pressure x volume = 'somenumber' x temperature.
So this kind of means that if you double the temperature and keep the pressure the same the density (sort of opposite of volume) will halve. Only thing is temp is in kelvin & 0degrees C = 273Kelvin (I think) so if you change the temp from 0 deg C to 27 deg C this is only a 10% change in Kelvin so density will only change by 10%.
There is also a relationship between viscosity & temperature. Viscosity (which relates more to drag than lift - now starting to stretch the grey cells) for most normal fluids increases as temperatures decreases. Not sure if this would offset the above.

In summary: Lower temp should equal more powerful wind, but effect should be pretty small.

Here endith the lesson (until someone who really does know what they're talking about decides to join in!)
phrase
phrase
WA
228 posts
WA, 228 posts
19 Mar 2009 3:30am
I know for a fact because I`ve kited here in the summer and in the U.K. during winter and used the same kite at the same wind speeds. And the colder wind does pack more punch. But saying that, there`s not much of a difference here (W.A.) in winter compared to summer. You only really notice it when you`ve kited in 30 something degrees and then went to -2degrees.
Love kiting in winter and love kiting in the rain. My only advice: Don`t go out too far, the wind can die (or double in speed) in a matter of seconds. Keep an eye out for the clouds, a big change in the clouds usually means a chang in the wind. If there`s thunder, get the hell out of the water![}:)]
Salt water is bad for your kite. Fresh water not so bad if you kite regularly. If you not going to kite for a while then make sure it`s dry.
Love kiting in winter, no euros, no crowds.
andyy
andyy
QLD
232 posts
QLD, 232 posts
19 Mar 2009 11:23am
Looks like we got ourselves a good old fashioned PHYSICS off.

ROWDYYYYYYYYYYYYY!!!!!
SandMcGroper
SandMcGroper
WA
5 posts
WA, 5 posts
19 Mar 2009 11:17am
general_dude said...

lovey said...

orright, on my third beer and the inner geek is coming out... just a question i've often pondered when out kiting in the rain (which sucks, by the way)

If you had a 20kt rainy southerly, would it have more "power" (for want of a better word) than a 20kt NE, because the air is wetter and denser and therefore had more mass?





Feeling bored & geeky to.
No expert but feel like blah ing on with what I do know.....

I think rain is not going to give you more power, but lets talk about temperature.
Wind energy (not quite the same as force by the way) is related to velocity cubed & density. So denser air should be more 'powerful' but the effect is not nearly as dramatic as higher wind speed.
Air is compressable so air will be denser if at higher pressure and at the same temp.
Air also expands when heated - PV=mRT
most of the time this means pressure x volume = 'somenumber' x temperature.
So this kind of means that if you double the temperature and keep the pressure the same the density (sort of opposite of volume) will halve. Only thing is temp is in kelvin & 0degrees C = 273Kelvin (I think) so if you change the temp from 0 deg C to 27 deg C this is only a 10% change in Kelvin so density will only change by 10%.
There is also a relationship between viscosity & temperature. Viscosity (which relates more to drag than lift - now starting to stretch the grey cells) for most normal fluids increases as temperatures decreases. Not sure if this would offset the above.

In summary: Lower temp should equal more powerful wind, but effect should be pretty small.

Here endith the lesson (until someone who really does know what they're talking about decides to join in!)


You're correct: colder air is denser, so at the same speed as warm air it has a higher energy content and your kite delivers more power. Rain would also contribute to this, as rainwater would increase the average density of the fluid flowing over your kite.

Kite's generate lift in two ways: bernoulli effects and simple wind redirection. The lift described by the bernoulli equation is a function of fluid viscosity; that is, the more viscous the fluid, the greater the drag and lift generated. So as temperature drops, viscocity increase and your kite delivers more power. The difference is going to be slight however. The majority of the difference in kite power comes from the increased density of the fluid.
sandgroper
sandgroper
WA
368 posts
WA, 368 posts
19 Mar 2009 8:36pm
SandMcGroper said...

general_dude said...

lovey said...

orright, on my third beer and the inner geek is coming out...
<SNIP>


Feeling bored & geeky to.
No expert but feel like blah ing on with what I do know.....

I think ...
<SNIP><SNIP>

In summary: Lower temp should equal more powerful wind, but effect should be pretty small.

Here endith the lesson (until someone who really does know what they're talking about decides to join in!)


You're correct: colder air is denser, so at the same speed as warm air it has a higher energy content and your kite delivers more power. Rain would also contribute to this, as rainwater would increase the average density of the fluid flowing over your kite.

Kite's generate lift in two ways: bernoulli effects and simple wind redirection. The lift described by the bernoulli equation is a function of fluid viscosity; that is, the more viscous the fluid, the greater the drag and lift generated. So as temperature drops, viscocity increase and your kite delivers more power. The difference is going to be slight however. The majority of the difference in kite power comes from the increased density of the fluid.


(This is so unworthy of a poor imitation of me.... You are not ready, GrassMcGroper.)

Temperature, pressure, density, bernoulli effects .....sorry, but I beg to differ.

Its the HUMIDITY - the % amount of molecules of water dissolved in the air - that gives air the significantly higher DENSITY it needs to pack a whollop in the wet.

One cubic metre of air at low pressure is, by definition, less dense than air at high pressure at the same volume, humidity and temperature. "Density" ordinarily depends on pressure, temperature, volume and humidity. It depends also more on WHAT is held in solution by the air - be it water vapour, rain, ice, snow, smoke, pollution, or cats and dogs. Pollution will increase air density, and can increase air density well beyond 100% humidity levels. A Volcanic eruption can lead to astonomical air densities.

Therefore kiting in volcanic smoke would be a lot easier than in a snowfall, but you'd be "Smokin'" in more ways than one.

Generally though, DRY air is much less windy than WET or HUMID air, because WET air, just like anything else that gets WET, is a lot heavier (or more DENSE) than clean dry air.

Air that is below 0 degrees is driest and usually @ 0% humidity. At 100% humidity, water comes out of solution. We usually call this Rain, but it may simply form cloud depending on air pressures, temperatures and other atmospheric effects.

Weather is a very very very very very very very complex subject so all ignorance is excused. ANU have just spent a staggering $30 Million of our money to setup a Sun Computer to model weather. Its the most advanced system south of the equator.

Some one ought to tell 'em Seabreeze has already got the weather solved...

You just ask Laurie.

Speaking of which, thanks for the green arrows this weekend, Laurie!
SandMcGroper
SandMcGroper
WA
5 posts
WA, 5 posts
20 Mar 2009 11:03am
sandgroper said...

SandMcGroper said...

general_dude said...

lovey said...

orright, on my third beer and the inner geek is coming out...
<SNIP>


Feeling bored & geeky to.
No expert but feel like blah ing on with what I do know.....

I think ...
<SNIP><SNIP>

In summary: Lower temp should equal more powerful wind, but effect should be pretty small.

Here endith the lesson (until someone who really does know what they're talking about decides to join in!)


You're correct: colder air is denser, so at the same speed as warm air it has a higher energy content and your kite delivers more power. Rain would also contribute to this, as rainwater would increase the average density of the fluid flowing over your kite.

Kite's generate lift in two ways: bernoulli effects and simple wind redirection. The lift described by the bernoulli equation is a function of fluid viscosity; that is, the more viscous the fluid, the greater the drag and lift generated. So as temperature drops, viscocity increase and your kite delivers more power. The difference is going to be slight however. The majority of the difference in kite power comes from the increased density of the fluid.


(This is so unworthy of a poor imitation of me.... You are not ready, GrassMcGroper.)

Temperature, pressure, density, bernoulli effects .....sorry, but I beg to differ.

One cubic metre of air at low pressure is, by definition, less dense than air at high pressure at the same volume, humidity and temperature. "Density" ordinarily depends on pressure, temperature, volume and humidity. It depends also more on WHAT is held in solution by the air - be it water vapour, rain, ice, snow, smoke, pollution, or cats and dogs. Pollution will increase air density, and can increase air density well beyond 100% humidity levels. A Volcanic eruption can lead to astonomical air densities.

Therefore kiting in volcanic smoke would be a lot easier than in a snowfall, but you'd be "Smokin'" in more ways than one.

Generally though, DRY air is much less windy than WET or HUMID air, because WET air, just like anything else that gets WET, is a lot heavier (or more DENSE) than clean dry air.

Air that is below 0 degrees is driest and usually @ 0% humidity. At 100% humidity, water comes out of solution. We usually call this Rain, but it may simply form cloud depending on air pressures, temperatures and other atmospheric effects.

Weather is a very very very very very very very complex subject so all ignorance is excused. ANU have just spent a staggering $30 Million of our money to setup a Sun Computer to model weather. Its the most advanced system south of the equator.

Some one ought to tell 'em Seabreeze has already got the weather solved...

You just ask Laurie.

Speaking of which, thanks for the green arrows this weekend, Laurie!


I was wondering who had the name I wanted when I was trying to register. Looks like you beat me to it, and quite soundly.

I've read a few times what you've said above; am i missing something?

Me: Air density is the biggest factor effecting kite power, assuming no change in wind velocity. Also, air density increases with rain content.

You: No no no, air DENSITY is more imporant and is effected by things like rain. Oh, and something about a weather station.

Touche', i guess?!?
webandit
webandit
WA
22 posts
WA, 22 posts
20 Mar 2009 11:27am
It seems there may be quite a few seabreezers who did physics, engineering or something of the like?
colinwill78
colinwill78
VIC
1395 posts
VIC, 1395 posts
20 Mar 2009 2:50pm
so does your wind meter measure wind speed or wind strength??

does all the BullS&^% air pressure, smoke, rain and humidity and such crap affect your kite but not affect your wind meter??? (read: your-avaerage-hand-held-fan-type-wind-meter)

I know the answer..... but i'm not telling you!!

bigmark100
bigmark100
NSW
584 posts
NSW, 584 posts
20 Mar 2009 3:32pm
i like kiting in the rain... but dry your kite out...
my 2 month old kite is full of mold stains cause i didnt..
xtortya
xtortya
WA
322 posts
WA, 322 posts
20 Mar 2009 1:36pm
someone put a wind meter in front of a fan and get a reading in room temperature then get a reading from the same fan in a walk in fridge (i'm sure someone has one) then maybe another reading spraying some water through it. or just go kiting. whatever.
Miss Jessie
Miss Jessie
NSW
181 posts
NSW, 181 posts
21 Mar 2009 1:08am



Miss Jessie
Miss Jessie
NSW
181 posts
NSW, 181 posts
21 Mar 2009 1:09am
Well at the end of the day here are the facts! I'm training to be an engineer but i'll leave the thoery to others!
I havejust enjoyed nearly 5hrs of being on the beach if not in the water kiting!!)
Kiting in the rain can rock!!!
Today WA had a nice wet front come in (see below for the wind graph). Now this was sweet-as wind, you just pull your bar in and you could jump over 2m, put a slight bit of swing in it and you could jump 3+. You can kite switch foot and not pay attention and still move up wind.
The con's-well no there isn't as long as your smart bout it.
1. The wind dies off between each front sometimes almost suddenly- Avoid this by not kiting out far, and watching the front. Usually blue sky will appear and break up the front.
2. Sudden really strong gust where you go from fully powered up to ripping your cord to be fully de-powered and still are powered up. If you want to be attached to your kite when this happenes-DONT be on the beach-you can go flying into the sand-dunes (as my mate did today and put his shoulder out). It lasts up to 5mins and hits just before the next rain front. (You can see this coming a mile away as well its raining!).
3. The wind while its raining is full of "up-drafts" basically putting your kite to 12 and pulling the bar in, sees you flying! Yeehhaaaa
4. The wind between fronts can completely die, or can just be enough and have qualities of (3).
Overall I flew a 7 today (I weigh jus under 60kgs) and went from completely powered up between fronts to completely de-powered during fronts. So the wind graph really is nothing to go by, as in summer seabreeze yellow arrows would see me on a 9m-12m to fly comfortably.


gruezi
gruezi
WA
3464 posts
WA, 3464 posts
20 Mar 2009 11:27pm
Today was total crap I'm afraid...didn't get out but looked crap on charts.
sandgroper
sandgroper
WA
368 posts
WA, 368 posts
21 Mar 2009 9:12am
SandMcGroper said...

I've read a few times what you've said above; am i missing something?

Me: Air density is the biggest factor effecting kite power, assuming no change in wind velocity. Also, air density increases with rain content.

You: No no no, air DENSITY is more imporant and is effected by things like rain. Oh, and something about a weather station.

Touche', i guess?!?


I wasnt responding to just you, but it did look like I was. My apologies.

I am agreeing with you in that: Air density, which increases with rain content, is the biggest factor effecting kite power.
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