how much force is involved in kiting?

Post general kiteboarding discussion topics here!

Moderator: BayAreaKite

how much force is involved in kiting?

awesome day yesterday. my hamstrings are wasted; which got me thinking: has anyone done the math on how much force is involved in kiting? riding over-powered feels a lot like pulling a heavy deadlift and i'm wondering what the equivalent amount of weight would be.

something like: kiting at X mph windspeed with a Y m2 kite = lifting Z pounds.

i suck at math; but i know we have some engineers on this forum. who has a formula for this?
behindThePeak
Valued Contributor

Posts: 246
Joined: Mon Apr 11, 2011 4:04 pm
Location: HMB

Re: how much force is involved in kiting?

Were you riding a surfboard?
I blew out my hamstring real good last year just riding hard on my surfboard
Not that over powerd juat slashing around
last week I tweeked it again on the surfboard
I was very lit up on my 9m a couple weeks ago and blown off the water on my twin tip
And my hamsteing was just fine
so you might want to look into force of different boards?

CdoG
Old School

Posts: 1484
Joined: Sat Jun 16, 2007 6:12 pm
Location: AlAmedA

Re: how much force is involved in kiting?

someone should invent a force platform (http://en.wikipedia.org/wiki/Force_platform) that's waterproof, battery powered, and fits on the deck of a kiteboard.
"A ship is safe in harbor, but that's not what ships are built for"

buckidge
Valued Contributor

Posts: 269
Joined: Fri Oct 30, 2009 11:27 pm

Re: how much force is involved in kiting?

buckidge wrote:someone should invent a force platform (http://en.wikipedia.org/wiki/Force_platform) that's waterproof, battery powered, and fits on the deck of a kiteboard.

Might be easier to put a force gauge on the lines.

This my guess for a 12m kite in 25mph wind seeing 50 mph apparent wind (wind + some % of kiter speed + some % of kite speed right before liftoff for a jump - I suspect this is high)

Assumptions:
12 m2 kite
50 mph kite speed (25 mph wind + kite motion)
1.2 lift coef (high)

Lift - 1/2*air density*velocity*velocity*area*lift_coef = ~1000 lbf
jrg
Valued Contributor

Posts: 257
Joined: Thu Mar 31, 2005 12:43 pm

Re: how much force is involved in kiting?

you guys are doing too much thinking and not enough kiting
My Photography ==> www.Loscocco.com
Kites:Ocean Rodeo: Flites and Razors
Boards:Ocean Rodeo: Duke and Spotz Hydrofoil
Eyewear:Kurtis Surf Goggles www.KurtisUSA.com

Loscocco
Old School

Posts: 2632
Joined: Fri Dec 16, 2005 11:08 pm
Location: San Francisco California

Re: how much force is involved in kiting?

Loscocco wrote:you guys are doing too much thinking and not enough kiting

+1
Kites: 2017 F-One Bandit: 8m. 2017 F-One Breeze 11m.
Board: 2015 F-One 5'10 Mitu Surf/Foil convertible
Harness: Manera Exoharness.
Wetsuit: Manera 5/4/3 X10D

le noun
Old School

Posts: 1638
Joined: Sat May 21, 2011 11:12 am

Re: how much force is involved in kiting?

Use the force...

OliverG
SFBA Member

Posts: 5342
Joined: Sat Feb 07, 2004 5:03 pm
Location: Oakland, CA

Re: how much force is involved in kiting?

1) watch vid of someone boosting
2) dead reckon the mid-jump velocity
3) calculate acceleration a = dv/dt
4) dead reckon the weight, plug it all into F=ma

Special thanks to my high school physics teacher

MehYam
Valued Contributor

Posts: 285
Joined: Wed Jul 13, 2005 12:23 pm
Location: San Mateo

Re: how much force is involved in kiting?

Cdog - it may be time for you to do a little Yoga to get those hammies more flexible....

aging is so awesome - your muscles get more limber/stronger....recovery periods shorter....o2 processing capability goes up....

But you do appreciate things more.

Get sum, Z
zgur
Resident

Posts: 792
Joined: Tue Mar 23, 2004 11:59 am
Location: Santa Cruz

Re: how much force is involved in kiting?

And I do remember you doing yoga before during and after kiting sessions
Years ago
Do you still do that?

CdoG
Old School

Posts: 1484
Joined: Sat Jun 16, 2007 6:12 pm
Location: AlAmedA

Next