FKA Kiteboarding Forums  

Go Back   FKA Kiteboarding Forums > General Discussion > Safer and Sustainable Kiting > SAFETY, WEATHER & LAUNCH SELECTION, SUSTAINABLE KITEBOARDING, FAQ'S
Connect with Facebook

https://www.facebook.com/rick.iossi
Reply
 
Thread Tools Display Modes
  #1  
Old 12-01-2004, 08:41 AM
RickI's Avatar
RickI RickI is offline
Administrator
Site Admin
 
Join Date: Jul 2004
Location: Florida
Posts: 8,691
Default Electric Shocks and Kiteboarding

Quote:
Originally Posted by kitesurfing turkey
So which material is craeting this?lines,kite it self or just the up and down,8figures?
If you move a conductor through a differentially charged field, electric current will be generated through the conductor. This is what makes dynamo's generate electricity.

Spectra kite lines are poor conductors, otherwise many more kiters would have been killed/electrocuted upon striking high tension powerlines than have apparently succumbed to date. Still, if you coat the outer surface of the kite line with moisture and better still salt, it will conduct electricity a bit better.

If there is an adequate charge differential between the surface and area aloft, particularly it seems if the humidity is lower, then your moving conductor, (kite lines), may develop a static charge. If you create a gap to ground, i.e. jump, you may cause a discharge. Folks have had loud discharges on jumping and one lady even said she saw a blue flash when she jumped once.

In other cases the discharge from the control bar can come every time you pull on the bar such as during sinusoiding. Hank on the bar and you get a painful zap to that hand. Still at other times there can be a continuous and even painful discharge from the control bar.

Atmospherics play into this in a big way of course. In SE Florida, the only times I have experienced this phenomena, lightning started within 15 minutes. HINT: DROP YOUR KITE PRONTO, you're waving around a 100 ft. lightning rod around on a flat surface! To keep flying in such conditions is bad, really bad as you may be destined to finish your kiting career as toast. The only other time I experienced this out of Florida was off of Cape Hatteras. There was some electrical activity but it was about 15 miles + to the north and moving to the NE with no apparent activity in my area. The humidity was lower and the discharges on jumping fairly loud. The last one was so loud that I called it a day.

Until we understand this better it would be good to avoid performing electrical experiments while kiteboarding. I doubt that trailing a grounding wire in the water will do much good if you are struck by lightning. Considering conductive surface moisture and surface water contact discussion of the relative merits of carbon bars, insulative booties, boards, bindings, etc. seems to be irrelevant.

More at:

http://www.nottltd.com/article.html
http://www.keohi.com/keohihdtv/hdrec...grounding.html
__________________
FKA, Inc.

transcribed by:
Rick Iossi
Reply With Quote
  #2  
Old 12-01-2004, 08:41 AM
RickI's Avatar
RickI RickI is offline
Administrator
Site Admin
 
Join Date: Jul 2004
Location: Florida
Posts: 8,691
Default Electric Shocks and Kiteboarding

Quote:
Originally Posted by kitesurfing turkey
So which material is craeting this?lines,kite it self or just the up and down,8figures?
If you move a conductor through a differentially charged field, electric current will be generated through the conductor. This is what makes dynamo's generate electricity.

Spectra kite lines are poor conductors, otherwise many more kiters would have been killed/electrocuted upon striking high tension powerlines than have apparently succumbed to date. Still, if you coat the outer surface of the kite line with moisture and better still salt, it will conduct electricity a bit better.

If there is an adequate charge differential between the surface and area aloft, particularly it seems if the humidity is lower, then your moving conductor, (kite lines), may develop a static charge. If you create a gap to ground, i.e. jump, you may cause a discharge. Folks have had loud discharges on jumping and one lady even said she saw a blue flash when she jumped once.

In other cases the discharge from the control bar can come every time you pull on the bar such as during sinusoiding. Hank on the bar and you get a painful zap to that hand. Still at other times there can be a continuous and even painful discharge from the control bar.

Atmospherics play into this in a big way of course. In SE Florida, the only times I have experienced this phenomena, lightning started within 15 minutes. HINT: DROP YOUR KITE PRONTO, you're waving around a 100 ft. lightning rod around on a flat surface! To keep flying in such conditions is bad, really bad as you may be destined to finish your kiting career as toast. The only other time I experienced this out of Florida was off of Cape Hatteras. There was some electrical activity but it was about 15 miles + to the north and moving to the NE with no apparent activity in my area. The humidity was lower and the discharges on jumping fairly loud. The last one was so loud that I called it a day.

Until we understand this better it would be good to avoid performing electrical experiments while kiteboarding. I doubt that trailing a grounding wire in the water will do much good if you are struck by lightning. Considering conductive surface moisture and surface water contact discussion of the relative merits of carbon bars, insulative booties, boards, bindings, etc. seems to be irrelevant.

More at:

http://www.nottltd.com/article.html
http://www.keohi.com/keohihdtv/hdrec...grounding.html
__________________
FKA, Inc.

transcribed by:
Rick Iossi
Reply With Quote
  #3  
Old 06-07-2005, 08:09 PM
RickI's Avatar
RickI RickI is offline
Administrator
Site Admin
 
Join Date: Jul 2004
Location: Florida
Posts: 8,691
Default

Quote:
Originally Posted by splatnikganglion
Quote:
If you move a conductor through a differentially charged field, electric current will be generated through the conductor. This is what makes dynamo's generate electricity.
That statement isn't quite correct because I believe you're thinking of a magnetic field which is used in a dynamo. The conductor doesn't need to be moving through a differentially charged field (electric) for current to flow through it, think of a wire connected to a battery.

Now, in this case there is a potential difference between cloud and ground (like you said) and the motion is probably important because of static charge being accumulated through friction with the air.

Either way, this phenomenon is extremely interesting and super scary. Seems like a rider is just begging to induce a lightning strike if they don't drop the kite and come in immediately.
I stand corrected, there is no magnetic field. I've been looking into a bit more and it seems to be even more involved than I thought originally. Stay tuned more to come.
__________________
FKA, Inc.

transcribed by:
Rick Iossi
Reply With Quote
  #4  
Old 06-07-2005, 08:09 PM
RickI's Avatar
RickI RickI is offline
Administrator
Site Admin
 
Join Date: Jul 2004
Location: Florida
Posts: 8,691
Default

Quote:
Originally Posted by splatnikganglion
Quote:
If you move a conductor through a differentially charged field, electric current will be generated through the conductor. This is what makes dynamo's generate electricity.
That statement isn't quite correct because I believe you're thinking of a magnetic field which is used in a dynamo. The conductor doesn't need to be moving through a differentially charged field (electric) for current to flow through it, think of a wire connected to a battery.

Now, in this case there is a potential difference between cloud and ground (like you said) and the motion is probably important because of static charge being accumulated through friction with the air.

Either way, this phenomenon is extremely interesting and super scary. Seems like a rider is just begging to induce a lightning strike if they don't drop the kite and come in immediately.
I stand corrected, there is no magnetic field. I've been looking into a bit more and it seems to be even more involved than I thought originally. Stay tuned more to come.
__________________
FKA, Inc.

transcribed by:
Rick Iossi
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 12:50 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.

Do not advertise outside of [COM] Forums.
Do not show disrespect for others in your postings.
Users can be denied access to this Site without warning.
FKA, Inc., it’s officers and moderators are not responsible
for the content of the postings and any links or pictures posted.

Report Problems by PM to “administrator” or via email to flkitesurfer@hotmail.com

Copyright FKA, Inc. 2004, All Rights Reserved.