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Adjustable down haul?

 
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rtz



Joined: 31 Oct 2010
Posts: 259
Location: Oklahoma City

PostPosted: Wed Jan 01, 2020 9:57 pm    Post subject: Adjustable down haul? Reply with quote

I've been seeing this lately. Is that what it is?
Zoom in. What's that front line she's holding?

https://www.instagram.com/p/B6i-tUZn2dx/?igshid=hauzxnxmz62n


Different angle:

https://www.instagram.com/p/B6BI6sYnnRu/?igshid=45sbvzfjt14d
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windward1



Joined: 18 Jun 2000
Posts: 1165

PostPosted: Thu Jan 02, 2020 12:17 am    Post subject: Reply with quote

no. She is holding the uphaul. Racers do this going upwind. I think it may help as it gets the body away from the sail making it less of a disturbance.
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grantmac017



Joined: 04 Aug 2016
Posts: 858

PostPosted: Thu Jan 02, 2020 1:51 am    Post subject: Reply with quote

Racers also use adjustable downhauls. If you aren't racing its needless complication.
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wsatl



Joined: 30 Sep 2014
Posts: 30

PostPosted: Thu Jan 02, 2020 11:51 am    Post subject: Reply with quote

Definitely holding the uphaul. When your body is away from a large sail like that, it's a stretch to keep the sail fully in going upwind (remember that letting out the front hand is effectively sheeting in). Very common in Formula, RS:X, upwind/downwind foiling, etc.

Here's a youtube video (worth watching for foiling alone)

Watch him grab the uphaul around 0:50

https://youtu.be/nn_4ncbHKwQ?t=51
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boardsurfr



Joined: 23 Aug 2001
Posts: 1219

PostPosted: Thu Jan 02, 2020 12:06 pm    Post subject: Reply with quote

Holding the uphaul can be quite useful when pinching upwind. I get at least an extra 5 degree angle on my BIC windsup if I hold the uphaul. That can be quite useful when cruising, or even when you want to work on downwind tricks and need to get back upwind in between. It's similar on a Kona or old longboard.
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jingebritsen



Joined: 21 Aug 2002
Posts: 3320

PostPosted: Sat Jan 04, 2020 7:50 am    Post subject: Reply with quote

user beware if one wishes to use an adjustable downhaul.

can sails are prone to batten tip breakage with too little downhaul tension. the benefit of having a cm or so more or less is not really that worth the hassle as stated above anyway. i set my tensions to nearly max for nearly every session, but do tend to rig aggressively large in most conditions anyway.

the leaden feeling i get from my kits when i try less tension, and smaller sizes irritate me me anyway. power from sail size, tuning for various conditions and applications. that includes mast types or blends for different bends, boom height, and outhaul.

yup, rdm's for waves, sdm's for flats, and frankenstien combinations of sizes when ferals interchange, typically, 460 bottom with 430 tops, etc. i get far more tuning with spars than adjustable downhauls.

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www.exocet-original.com
www.iwindsurf.com
http://www.epicgearusa.com/
http://www.seanski.com/
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sound_solution



Joined: 23 Jan 2015
Posts: 2

PostPosted: Sun Jan 05, 2020 8:31 pm    Post subject: Reply with quote

With which Aerotech sails and to what end would you use a 460 bottom with a 430 top?
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jingebritsen



Joined: 21 Aug 2002
Posts: 3320

PostPosted: Mon Jan 06, 2020 2:56 am    Post subject: Reply with quote

6.8 phantom, but only if i want better pumping for 13-24 kind of conditions. otherwise a full 460 rdm or sdm. obviously, rdm for waves, sdm for flat water.

7.0 airx always

6.5 freespeed always, yet the new 2020 now is shaped fully enough to just use a 460.

in the examples above i can get these sails to have a fuller shape, down low, and a more supple twist up top. more shape helps with stability and power when lit up.

these are observations that suit me and my pursuit for an extra 3-5% of performance that most people would likely not bother with. keeps my interest level up a bit on days that might otherwise be a bit underwhelming.

_________________
www.aerotechsails.com
www.exocet-original.com
www.iwindsurf.com
http://www.epicgearusa.com/
http://www.seanski.com/
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